Company lists · Data refreshed November 2026
Top 25 Retrofitting consultants based in the United States
RevenueBase identified 2,266 company matches for retrofitting consultants associated with the United States as of November 2026 and tracks 36,422 professional contacts across them, including 15,475 with verified work emails. New York is the largest hub.
This list covers company matches for retrofitting consultants associated with the United States, found by RevenueBase SmartSearch using the meaning of business descriptions in its company graph at Exact. Ranked by professionals tracked, largest first. Rows show recorded descriptions where available, Exact search membership and the snapshot date. Data refreshed November 6, 2026.
Published by RevenueBase, a B2B data infrastructure company. This list was built with RevenueBase SmartSearch, the natural-language company search RevenueBase customers use to build their own targeted lists and unlock verified emails and direct dials at the companies on them. How these lists are built and judged.
The 25 largest retrofitting consultants based in the United States
Ranked by team size| # | Company | Contacts | |||
|---|---|---|---|---|---|
| 1 | 1,164 contacts → | ||||
Exact match “OLA Sustainability, LLC OLA Sustainability is a consulting firm that focuses on integrating sustainable practices into commercial and multifamily design projects.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase | |||||
| 2 | 919 contacts → | ||||
Exact match “The right team is more than an advantage.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase | |||||
| 3 | 857 contacts → | ||||
Exact match “Consult Engineer Commission At Syska Hennessy Group, we create exceptional environments.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase | |||||
| 4 | 723 contacts → | ||||
Exact match “ME Engineers has earned a reputation as a global leader in the design of innovative MEPT systems that bring to life the world's most innovative sports and entertainment venues.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase | |||||
| 5 | 501 contacts → | ||||
Exact match “Jaros, Baum & Bolles, Inc.(JB & B) is a leading consulting engineering firm specializing in mechanical, electrical, plumbing, and fire protection (MEP/FP) systems for complex…” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase | |||||
| 6 | 479 contacts → | ||||
Exact match “MBP is a multi-disciplined consulting firm that provides a broad range of professional services designed to mitigate risk and optimize value within the built environment.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase | |||||
| 7 | 387 contacts → | ||||
Exact match “Glumac, a Tetra Tech Company, is a global leader in building engineering, committed to delivering a low carbon future for all.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase | |||||
| 8 | 379 contacts → | ||||
Exact match “P2S has brought forward-thinking, sustainable engineering solutions to the West Coast and beyond for over 35 years.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase | |||||
| 9 | 318 contacts → | ||||
Exact match “Cosentini has a 70+ year history of engineering many of the world’s most iconic buildings.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase | |||||
| 10 | 276 contacts → | ||||
Exact match “JVA, Incorporated is an employee-owned consulting engineering firm with offices in Boulder, Fort Collins, Winter Park, Glenwood Springs, and Denver, Colorado.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase | |||||
| 11 | 276 contacts → | ||||
Exact match “BASE4 is a team of award-winning architects, engineers, and interior designers who live at the intersection of technological innovation and premier building design.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase | |||||
| 12 | 245 contacts → | ||||
Exact match “Allana Buick & Bers, Inc.(ABB) is a leading Architectural Engineering firm specializing in making buildings perform better by making them energy efficient and longer lasting with…” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase | |||||
| 13 | 242 contacts → | ||||
Exact match “Founded in 1972, DBR has evolved into the premier MEP engineering firm in Texas, providing mechanical, electrical, and plumbing engineering services, as well as building…” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase | |||||
| 14 | 223 contacts → | ||||
Exact match “PEG presents a comprehensive capacity for the evaluation and understanding of a broad base of energy and environmental sustainability related programs, policies and initiatives.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase | |||||
| 15 | 216 contacts → | ||||
Exact match “IDS is an award-winning engineering and architectural firm offering multidisciplinary consulting services through our staff of 90 professionals.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase | |||||
| 16 | 196 contacts → | ||||
Exact match “Hargis Engineers is a mechanical, electrical, telecommunications, security, energy consulting engineering, and commissioning firm.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase | |||||
| 17 | 188 contacts → | ||||
Exact match “Robert Derector Associates is a full service engineering firm with a local feel and a global reach.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase | |||||
| 18 | 187 contacts → | ||||
Exact match “A global company, ESD is a leader in Improving Society Through the Built Environment.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase | |||||
| 19 | 185 contacts → | ||||
Exact match “DC Engineering was founded in 1998 on the idea that a clear understanding of a project in the context of client’s goals, as well as the surrounding business and operational…” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase | |||||
| 20 | 177 contacts → | ||||
Exact match “Established in 1955, Kohrs Lonnemann Heil Engineers, Inc.(KLH Engineers) is nationally ranked among the top mechanical, electrical, plumbing and technology engineering firms.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase | |||||
| 21 | 162 contacts → | ||||
Exact match “Säzän Group is an engineering and consulting firm with offices in Washington, Oregon, and Arizona.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase | |||||
| 22 | 161 contacts → | ||||
Exact match “EEA Consulting Engineers is a full-service mechanical, electrical and plumbing (MEP)consulting firm serving new and existing facilities in all market sectors.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase | |||||
| 23 | 159 contacts → | ||||
Exact match “Grumman|Butkus Associates (GBA) is a nationally recognized consulting engineering firm that specializes in mechanical, electrical and plumbing design services and energy and…” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase | |||||
| 24 | 159 contacts → | ||||
Exact match “Dunham is a full service mechanical and electrical consulting firm.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase | |||||
| 25 | 152 contacts → | ||||
Exact match Recorded description not available. Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase | |||||
RevenueBase SmartSearch
Describe a niche business in your own words. RevenueBase SmartSearch compares the meaning of your description with company business descriptions compiled in the RevenueBase company graph. Exact, Similar, Related and Broad control how closely companies must fit.
This list uses Exact for “retrofitting consultants”. Each Exact match badge shows membership in that saved search; it is not an individual similarity score or a service-quality rating. Recorded descriptions are shown where available.
Showing 25 of 2,266 retrofitting consultants based in the United States
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Retrofitting consultants based in the United States at a glance
As of Nov 6, 2026Companies by employee count
Email recency for this list is measured worldwide rather than for United States, so it is reported there. Company counts and contact totals on this page are exact for United States, over 2,266 companies.
How this list was built
The recorded descriptions help you assess these company matches. Check a company’s website for its current services and locations.
- Source
- The RevenueBase company graph: 60 million companies and 398.9 million professional contacts resolved from primary sources, queried with RevenueBase SmartSearch, the natural-language company search available to every RevenueBase user.
- What qualifies
- Company records associated with the United States whose business descriptions match “retrofitting consultants” by meaning at the Exact setting. Descriptions are compiled in the RevenueBase company graph from public websites, profiles and company information where available; they are not guaranteed quotations from the company's website.
- RevenueBase SmartSearch
- Describe a niche company in your own words to find businesses by meaning. Exact, Similar, Related and Broad control the breadth of RevenueBase SmartSearch. This saved list uses Exact. Each row's Exact match badge shows inclusion in that search, not an individual score or a service-quality judgment.
- Public preview
- The public preview omits records without a verified work email. Where headquarters information is recorded, preview rows are also filtered to this page’s location. Dataset totals and geographic summaries describe the full matched records before these preview filters.
- Match quality
- RevenueBase's August 25, 2026 study assessed 4,198 description/company pairs across matching settings. The publisher reports 86% good or better at Exact. This evaluates the method across queries; it does not audit this individual list. Recorded company descriptions, where available, help you judge each match yourself. Read the full methodology: how the lists are built and what the study measures.
- Ranking
- Team size, largest first: companies are ordered by the number of professionals RevenueBase tracks at each one. Employee ranges shown are reported bands, for context.
- Verification
- Every displayed company carries at least one verified work email. RevenueBase tracks 15,475 professional contacts with verified work emails across the full matched dataset. Contacts re-verify on a rolling cadence, and each contact's own verification date is shown inside RevenueBase.
- Refresh
- This page's figures were pulled from the company graph on November 6, 2026. Lists refresh periodically as the graph is re-checked.
- Record context
- Company records and descriptions can change. Check the company's website for its current services and locations.
Retrofitting consultants by metro
- Retrofitting consultants in New York120
- Retrofitting consultants in San Francisco36
- Retrofitting consultants in Los Angeles35
- Retrofitting consultants in Houston31
- Retrofitting consultants in Austin29
- Retrofitting consultants in Portland29
- Retrofitting consultants in Atlanta28
- Retrofitting consultants in Chicago28
- Retrofitting consultants in Miami28
- Retrofitting consultants in Denver27
Frequently asked
What is RevenueBase SmartSearch?
RevenueBase SmartSearch finds niche companies by the meaning of their business descriptions in the RevenueBase company graph. Exact, Similar, Related and Broad control how closely companies must fit your description. This list uses Exact for “retrofitting consultants”; each Exact match badge shows search membership, not an individual similarity or quality score.
How many retrofitting consultants are there based in the United States?
RevenueBase identified 2,266 company matches for retrofitting consultants associated with the United States as of November 2026, using the meaning of business descriptions at Exact. This is the recorded matched set in the RevenueBase company graph.
What is the largest company on this list?
OLA tops the displayed preview by professional contacts tracked in RevenueBase. Recorded headquarters appear in the company rows.
Which city has the most retrofitting consultants?
New York leads with 120 company records, followed by San Francisco (36) and Los Angeles (35).
How do I get contact information for these companies?
A free RevenueBase account lets you run this exact search and work limited free results with 500 credits to start. Upgrading provides access to the 15,475 professional contacts with verified work emails tracked across these 2,266 companies; direct dials are available where recorded.
How current is this list?
The list refreshes periodically as the company graph is re-checked. This page's figures were pulled on November 6, 2026.
Ready to reach these companies? Verified emails and direct dials for all 2,266 retrofitting consultants based in the United States. Start with a free account, no credit card.
Download this list →Related lists
Retrofitting consultants by geography
- Retrofitting consultants based in Melbourne, Australia
- Retrofitting consultants based in Sydney, Australia
- Retrofitting consultants based in Belo Horizonte, Brazil
- Retrofitting consultants based in Rio De Janeiro, Brazil
- Retrofitting consultants based in Sao Paulo, Brazil
- Retrofitting consultants based in Calgary, Canada
- Retrofitting consultants based in Montreal, Canada
- Retrofitting consultants based in Toronto, Canada
- Retrofitting consultants based in Vancouver, Canada
- Retrofitting consultants based in Lyon, France
- Retrofitting consultants based in Paris, France
- Retrofitting consultants based in Toulouse, France
About this data
RevenueBase is a B2B data infrastructure company. Its company graph covers 60 million companies and 398.9 million professional contacts, with emails verified on a rolling cadence rather than scraped once and left to decay. These company lists are generated directly from that graph with RevenueBase SmartSearch, the same natural-language company search every RevenueBase user has: describe a market in plain words, get the companies that match, and add verified emails and direct dials for the people at them. It is the same data that powers RevenueBase's B2B data products, and a free account includes 500 credits to start. How these lists are built and judged.
More company lists
- All company lists
- Lists by location
- Lists A-Z
- New lists
- Retrofitting consultants based in Melbourne, Australia
- Retrofitting consultants based in Sydney, Australia
- Retrofitting consultants based in Belo Horizonte, Brazil
- Retrofitting consultants based in Rio De Janeiro, Brazil
- Retrofitting consultants based in Sao Paulo, Brazil
- Retrofitting consultants based in Calgary, Canada
Company intelligence · public preview
Top 25 retrofitting consultants based in the United States
Find companies in any niche.
Describe the businesses you want in your own words. RevenueBase SmartSearch matches company descriptions by meaning.
RevenueBase records 2,266 matching company records for retrofitting consultants based in the United States, with 36,422 tracked contacts and 15,475 verified work emails.
This public preview shows 25 selected records ordered by tracked contacts. RevenueBase SmartSearch finds company descriptions that match by meaning at Exact. Snapshot: November 6, 2026.
RevenueBase compiles business descriptions for niche-company discovery; each row shows a recorded excerpt where available. Adapt this search to find the companies and contacts you want.
Top 25 retrofitting consultants based in the United States
The public list shows selected company records with contact and verified-email coverage. Reported employee bands provide separate company-size context.
| # | Company | Headquarters on record | Reported employees | RevenueBase SmartSearch | Tracked contacts |
|---|---|---|---|---|---|
| 1 |  OLAola-austin.comHQ: Austin, TX, United StatesReported employees: Not recorded | Austin, TX, United States | Not recorded | Exact match | 1,164 contacts → |
“OLA Sustainability, LLC OLA Sustainability is a consulting firm that focuses on integrating sustainable practices into commercial and multifamily design projects.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 2 |  Coffman Engineerscoffman.comHQ: Seattle, CO, United StatesReported employees: 501-1,000 | Seattle, CO, United States | 501-1,000 | Exact match | 919 contacts → |
“The right team is more than an advantage.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 3 |  Syska Hennessy Groupsyska.comHQ: Raleigh, NC, United StatesReported employees: 501-1,000 | Raleigh, NC, United States | 501-1,000 | Exact match | 857 contacts → |
“Consult Engineer Commission At Syska Hennessy Group, we create exceptional environments.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 4 |  ME Engineersme-engineers.comHQ: Golden, TX, United StatesReported employees: 201-500 | Golden, TX, United States | 201-500 | Exact match | 723 contacts → |
“ME Engineers has earned a reputation as a global leader in the design of innovative MEPT systems that bring to life the world's most innovative sports and entertainment venues.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 5 |  Jaros, Baum & Bolles Jb&bjbb.comHQ: New York, MA, United StatesReported employees: 201-500 | New York, MA, United States | 201-500 | Exact match | 501 contacts → |
“Jaros, Baum & Bolles, Inc.(JB & B) is a leading consulting engineering firm specializing in mechanical, electrical, plumbing, and fire protection (MEP/FP) systems for complex…” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 6 |  MBP Mcdonough Bolyard Peckmbpce.comHQ: Fairfax, VA, United StatesReported employees: 201-500 | Fairfax, VA, United States | 201-500 | Exact match | 479 contacts → |
“MBP is a multi-disciplined consulting firm that provides a broad range of professional services designed to mitigate risk and optimize value within the built environment.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 7 |  Glumacglumac.comHQ: San Francisco, NV, United StatesReported employees: 201-500 | San Francisco, NV, United States | 201-500 | Exact match | 387 contacts → |
“Glumac, a Tetra Tech Company, is a global leader in building engineering, committed to delivering a low carbon future for all.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 8 |  P2sp2sinc.comHQ: Long Beach, CA, United StatesReported employees: 201-500 | Long Beach, CA, United States | 201-500 | Exact match | 379 contacts → |
“P2S has brought forward-thinking, sustainable engineering solutions to the West Coast and beyond for over 35 years.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 9 |  Cosentini Associatescosentini.comHQ: Nyc, NY, United StatesReported employees: 201-500 | Nyc, NY, United States | 201-500 | Exact match | 318 contacts → |
“Cosentini has a 70+ year history of engineering many of the world’s most iconic buildings.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 10 |  Jva, INCjvajva.comHQ: Boulder, CO, United StatesReported employees: 51-200 | Boulder, CO, United States | 51-200 | Exact match | 276 contacts → |
“JVA, Incorporated is an employee-owned consulting engineering firm with offices in Boulder, Fort Collins, Winter Park, Glenwood Springs, and Denver, Colorado.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 11 |  Base4base-4.comHQ: Boca Raton, FL, United StatesReported employees: 201-500 | Boca Raton, FL, United States | 201-500 | Exact match | 276 contacts → |
“BASE4 is a team of award-winning architects, engineers, and interior designers who live at the intersection of technological innovation and premier building design.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 12 |  Allana Buick & Bers, INCabbae.comHQ: Palo Alto, NC, United StatesReported employees: 201-500 | Palo Alto, NC, United States | 201-500 | Exact match | 245 contacts → |
“Allana Buick & Bers, Inc.(ABB) is a leading Architectural Engineering firm specializing in making buildings perform better by making them energy efficient and longer lasting with…” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 13 |  DBRdbrinc.comHQ: Houston, TX, United StatesReported employees: 201-500 | Houston, TX, United States | 201-500 | Exact match | 242 contacts → |
“Founded in 1972, DBR has evolved into the premier MEP engineering firm in Texas, providing mechanical, electrical, and plumbing engineering services, as well as building…” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 14 |  PEGpegenv.comHQ: Fairfax, VA, United StatesReported employees: 201-500 | Fairfax, VA, United States | 201-500 | Exact match | 223 contacts → |
“PEG presents a comprehensive capacity for the evaluation and understanding of a broad base of energy and environmental sustainability related programs, policies and initiatives.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 15 |  IDS Group, INCidsgi.comHQ: Irvine, CA, United StatesReported employees: 51-200 | Irvine, CA, United States | 51-200 | Exact match | 216 contacts → |
“IDS is an award-winning engineering and architectural firm offering multidisciplinary consulting services through our staff of 90 professionals.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 16 |  Hargis Engineershargis.bizHQ: Seattle, WA, United StatesReported employees: 201-500 | Seattle, WA, United States | 201-500 | Exact match | 196 contacts → |
“Hargis Engineers is a mechanical, electrical, telecommunications, security, energy consulting engineering, and commissioning firm.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 17 |  Robert Derector Associatesderector.comHQ: New York, NY, United StatesReported employees: 51-200 | New York, NY, United States | 51-200 | Exact match | 188 contacts → |
“Robert Derector Associates is a full service engineering firm with a local feel and a global reach.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 18 |  ESD NOW Stantec Consulting Servicesesdglobal.comHQ: Chicago, IL, United StatesReported employees: 201-500 | Chicago, IL, United States | 201-500 | Exact match | 187 contacts → |
“A global company, ESD is a leader in Improving Society Through the Built Environment.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 19 |  DC Engineeringdcengineering.netHQ: Meridian, ID, United StatesReported employees: 51-200 | Meridian, ID, United States | 51-200 | Exact match | 185 contacts → |
“DC Engineering was founded in 1998 on the idea that a clear understanding of a project in the context of client’s goals, as well as the surrounding business and operational…” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 20 |  KLH Engineersklhengrs.comHQ: Ft. Thomas, KY, United StatesReported employees: 51-200 | Ft. Thomas, KY, United States | 51-200 | Exact match | 177 contacts → |
“Established in 1955, Kohrs Lonnemann Heil Engineers, Inc.(KLH Engineers) is nationally ranked among the top mechanical, electrical, plumbing and technology engineering firms.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 21 |  Säzän Group INCsazan.comHQ: Seattle, AZ, United StatesReported employees: 51-200 | Seattle, AZ, United States | 51-200 | Exact match | 162 contacts → |
“Säzän Group is an engineering and consulting firm with offices in Washington, Oregon, and Arizona.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 22 |  EEA Consulting Engineerseeace.comHQ: Austin, TX, United StatesReported employees: 51-200 | Austin, TX, United States | 51-200 | Exact match | 161 contacts → |
“EEA Consulting Engineers is a full-service mechanical, electrical and plumbing (MEP)consulting firm serving new and existing facilities in all market sectors.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 23 |  Grumman Butkus Associatesgrummanbutkus.comHQ: Evanston, WI, United StatesReported employees: 51-200 | Evanston, WI, United States | 51-200 | Exact match | 159 contacts → |
“Grumman|Butkus Associates (GBA) is a nationally recognized consulting engineering firm that specializes in mechanical, electrical and plumbing design services and energy and…” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 24 |  Dunham Associates, INCdunhameng.comHQ: Minneapolis, MN, United StatesReported employees: 51-200 | Minneapolis, MN, United States | 51-200 | Exact match | 159 contacts → |
“Dunham is a full service mechanical and electrical consulting firm.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 25 |  Concord Engineering Group, INCconcord-engineering.comHQ: Voorhees, NJ, United StatesReported employees: 51-200 | Voorhees, NJ, United States | 51-200 | Exact match | 152 contacts → |
No recorded description excerpt is available for this public record. | |||||
Showing 25 of 2,266 company matches
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Retrofitting consultants: dataset insights
November 6, 2026These summaries describe recorded coverage in this saved dataset. This page is derived from saved source records; per-contact mobile coverage and email-recency results are not established by this snapshot.
Reported company sizes
2,260 records in the displayed employee bands.
6 matching records are outside the displayed bands or do not have a displayed size. Bars show shares of the displayed bands.
Email recency for this list is measured worldwide rather than for United States, so it is reported there. Company counts and contact totals on this page are exact for United States, over 2,266 companies.
How this company list was built
Describe a niche in your own words: companies installing commercial solar, or manufacturers of sustainable packaging. RevenueBase SmartSearch finds companies whose compiled business descriptions match by meaning. This list is one saved example to adapt.
Where the company descriptions come from
RevenueBase compiles company information from public sources, including company websites and public professional profiles such as LinkedIn, alongside information supplied by companies. The short recorded excerpt shown here is separate from the complete business description used for matching; individual source URLs and collection dates are not provided in this public snapshot.
RevenueBase SmartSearch matching settings
- Exact
- Closest fits to the business described.
- Similar
- Similar businesses with a wider range of fits.
- Related
- Related businesses in and around the category.
- Broad
- A broader set of businesses connected to the description.
RevenueBase SmartSearch · Exact match identifies inclusion in this search's closest semantic matching setting. It is not a per-company confidence score, a literal keyword match, or a quality endorsement.
Selection, ordering and scope
The public list shows selected company records with contact and verified-email coverage. Reported employee bands provide separate company-size context.
This page is derived from saved source records; per-contact mobile coverage and email-recency results are not established by this snapshot.
Recorded company descriptions support research; check company websites for current services. The selected preview is ordered by tracked contacts and is not a list of the best service providers.
Snapshot: November 6, 2026.
RevenueBase is a B2B data infrastructure company. Its September 3, 2026 published methodology describes a graph of 60 million companies and 398.9 million professional contacts; these platform figures differ from this page's totals. Published methodology ↗
Retrofitting consultants by metro
- Retrofitting consultants in New York120
- Retrofitting consultants in San Francisco36
- Retrofitting consultants in Los Angeles35
- Retrofitting consultants in Houston31
- Retrofitting consultants in Austin29
- Retrofitting consultants in Portland29
- Retrofitting consultants in Atlanta28
- Retrofitting consultants in Chicago28
- Retrofitting consultants in Miami28
- Retrofitting consultants in Denver27
Questions about this company list
What does Exact match mean for retrofitting consultants?
The separate RevenueBase SmartSearch column identifies inclusion at the closest semantic matching preset. It is not a literal keyword match, a per-company confidence score or a quality endorsement. Changing the search form opens a new search in RevenueBase; it does not reclassify these saved rows.
How many retrofitting consultants did RevenueBase find based in the United States?
The saved snapshot records 2,266 matching company records, 36,422 tracked contacts and 15,475 verified emails. The public preview displays 25 selected records.
Where do the company descriptions come from?
RevenueBase compiles company information from public sources, including company websites and public professional profiles such as LinkedIn, alongside information supplied by companies. The short recorded excerpt shown here is separate from the complete business description used for matching; individual source URLs and collection dates are not provided in this public snapshot.
How are the public companies ordered?
The selected public records are ordered by contacts tracked in RevenueBase, highest first. Contact coverage is a prospecting measure, not an assessment of the company's services or quality.
How can I get contact information?
Select a company's contact count to open its filtered contacts in RevenueBase. Free signup is required and includes 500 credits and limited free results. Verified emails, direct dials and mobile numbers depend on available coverage.
How current is this list?
Snapshot: November 6, 2026. Review each company's website for current services and locations. A recorded business description does not establish that every company offers every service named in the search.
What do headquarters and employee bands mean?
These are recorded company-level fields, rather than a map of every branch or a count of specialists. Missing headquarters or employee bands are labeled; older records may show a location separately from recorded headquarters.
Build your next target company list
Adapt this niche search and work with available contacts in RevenueBase.
Related lists
Retrofitting consultants by geography
- Retrofitting consultants based in Melbourne, Australia
- Retrofitting consultants based in Sydney, Australia
- Retrofitting consultants based in Belo Horizonte, Brazil
- Retrofitting consultants based in Rio De Janeiro, Brazil
- Retrofitting consultants based in Sao Paulo, Brazil
- Retrofitting consultants based in Calgary, Canada
- Retrofitting consultants based in Montreal, Canada
- Retrofitting consultants based in Toronto, Canada
- Retrofitting consultants based in Vancouver, Canada
- Retrofitting consultants based in Lyon, France
- Retrofitting consultants based in Paris, France
- Retrofitting consultants based in Toulouse, France
Cite this list
RevenueBase Data Team. Top 25 retrofitting consultants based in the United States. Snapshot: November 6, 2026. https://revenuebase.ai/companies/retrofitting-consultants/united-states.
This is a selected public preview of saved company records, rather than an independently verified census. Open the source page ↗
More company lists
- All company lists
- Lists by location
- Lists A-Z
- New lists
- Retrofitting consultants based in Melbourne, Australia
- Retrofitting consultants based in Sydney, Australia
- Retrofitting consultants based in Belo Horizonte, Brazil
- Retrofitting consultants based in Rio De Janeiro, Brazil
- Retrofitting consultants based in Sao Paulo, Brazil
- Retrofitting consultants based in Calgary, Canada
Company intelligence · public preview
Top 25 retrofitting consultants based in the United States
RevenueBase records 2,266 matching company records for retrofitting consultants based in the United States, with 36,422 tracked contacts and 15,475 verified work emails.
This public preview shows 25 selected records ordered by tracked contacts. RevenueBase SmartSearch finds company descriptions that match by meaning at Exact. Snapshot: November 6, 2026.
RevenueBase compiles business descriptions for niche-company discovery; each row shows a recorded excerpt where available. Adapt this search to find the companies and contacts you want.
Top 25 retrofitting consultants based in the United States
The public list shows selected company records with contact and verified-email coverage. Reported employee bands provide separate company-size context.
| # | Company | Headquarters on record | Reported employees | RevenueBase SmartSearch | Tracked contacts |
|---|---|---|---|---|---|
| 1 | OLAola-austin.com HQ: Austin, TX, United StatesReported employees: Not recorded | Austin, TX, United States | Not recorded | Exact match | 1,164 contacts → |
“OLA Sustainability, LLC OLA Sustainability is a consulting firm that focuses on integrating sustainable practices into commercial and multifamily design projects.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 2 | Coffman Engineerscoffman.com HQ: Seattle, CO, United StatesReported employees: 501-1,000 | Seattle, CO, United States | 501-1,000 | Exact match | 919 contacts → |
“The right team is more than an advantage.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 3 | Syska Hennessy Groupsyska.com HQ: Raleigh, NC, United StatesReported employees: 501-1,000 | Raleigh, NC, United States | 501-1,000 | Exact match | 857 contacts → |
“Consult Engineer Commission At Syska Hennessy Group, we create exceptional environments.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 4 | ME Engineersme-engineers.com HQ: Golden, TX, United StatesReported employees: 201-500 | Golden, TX, United States | 201-500 | Exact match | 723 contacts → |
“ME Engineers has earned a reputation as a global leader in the design of innovative MEPT systems that bring to life the world's most innovative sports and entertainment venues.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 5 | Jaros, Baum & Bolles Jb&bjbb.com HQ: New York, MA, United StatesReported employees: 201-500 | New York, MA, United States | 201-500 | Exact match | 501 contacts → |
“Jaros, Baum & Bolles, Inc.(JB & B) is a leading consulting engineering firm specializing in mechanical, electrical, plumbing, and fire protection (MEP/FP) systems for complex…” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 6 | MBP Mcdonough Bolyard Peckmbpce.com HQ: Fairfax, VA, United StatesReported employees: 201-500 | Fairfax, VA, United States | 201-500 | Exact match | 479 contacts → |
“MBP is a multi-disciplined consulting firm that provides a broad range of professional services designed to mitigate risk and optimize value within the built environment.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 7 | Glumacglumac.com HQ: San Francisco, NV, United StatesReported employees: 201-500 | San Francisco, NV, United States | 201-500 | Exact match | 387 contacts → |
“Glumac, a Tetra Tech Company, is a global leader in building engineering, committed to delivering a low carbon future for all.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 8 | P2sp2sinc.com HQ: Long Beach, CA, United StatesReported employees: 201-500 | Long Beach, CA, United States | 201-500 | Exact match | 379 contacts → |
“P2S has brought forward-thinking, sustainable engineering solutions to the West Coast and beyond for over 35 years.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 9 | Cosentini Associatescosentini.com HQ: Nyc, NY, United StatesReported employees: 201-500 | Nyc, NY, United States | 201-500 | Exact match | 318 contacts → |
“Cosentini has a 70+ year history of engineering many of the world’s most iconic buildings.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 10 | Jva, INCjvajva.com HQ: Boulder, CO, United StatesReported employees: 51-200 | Boulder, CO, United States | 51-200 | Exact match | 276 contacts → |
“JVA, Incorporated is an employee-owned consulting engineering firm with offices in Boulder, Fort Collins, Winter Park, Glenwood Springs, and Denver, Colorado.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 11 | Base4base-4.com HQ: Boca Raton, FL, United StatesReported employees: 201-500 | Boca Raton, FL, United States | 201-500 | Exact match | 276 contacts → |
“BASE4 is a team of award-winning architects, engineers, and interior designers who live at the intersection of technological innovation and premier building design.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 12 | Allana Buick & Bers, INCabbae.com HQ: Palo Alto, NC, United StatesReported employees: 201-500 | Palo Alto, NC, United States | 201-500 | Exact match | 245 contacts → |
“Allana Buick & Bers, Inc.(ABB) is a leading Architectural Engineering firm specializing in making buildings perform better by making them energy efficient and longer lasting with…” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 13 | DBRdbrinc.com HQ: Houston, TX, United StatesReported employees: 201-500 | Houston, TX, United States | 201-500 | Exact match | 242 contacts → |
“Founded in 1972, DBR has evolved into the premier MEP engineering firm in Texas, providing mechanical, electrical, and plumbing engineering services, as well as building…” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 14 | PEGpegenv.com HQ: Fairfax, VA, United StatesReported employees: 201-500 | Fairfax, VA, United States | 201-500 | Exact match | 223 contacts → |
“PEG presents a comprehensive capacity for the evaluation and understanding of a broad base of energy and environmental sustainability related programs, policies and initiatives.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 15 | IDS Group, INCidsgi.com HQ: Irvine, CA, United StatesReported employees: 51-200 | Irvine, CA, United States | 51-200 | Exact match | 216 contacts → |
“IDS is an award-winning engineering and architectural firm offering multidisciplinary consulting services through our staff of 90 professionals.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 16 | Hargis Engineershargis.biz HQ: Seattle, WA, United StatesReported employees: 201-500 | Seattle, WA, United States | 201-500 | Exact match | 196 contacts → |
“Hargis Engineers is a mechanical, electrical, telecommunications, security, energy consulting engineering, and commissioning firm.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 17 | Robert Derector Associatesderector.com HQ: New York, NY, United StatesReported employees: 51-200 | New York, NY, United States | 51-200 | Exact match | 188 contacts → |
“Robert Derector Associates is a full service engineering firm with a local feel and a global reach.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 18 | ESD NOW Stantec Consulting Servicesesdglobal.com HQ: Chicago, IL, United StatesReported employees: 201-500 | Chicago, IL, United States | 201-500 | Exact match | 187 contacts → |
“A global company, ESD is a leader in Improving Society Through the Built Environment.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 19 | DC Engineeringdcengineering.net HQ: Meridian, ID, United StatesReported employees: 51-200 | Meridian, ID, United States | 51-200 | Exact match | 185 contacts → |
“DC Engineering was founded in 1998 on the idea that a clear understanding of a project in the context of client’s goals, as well as the surrounding business and operational…” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 20 | KLH Engineersklhengrs.com HQ: Ft. Thomas, KY, United StatesReported employees: 51-200 | Ft. Thomas, KY, United States | 51-200 | Exact match | 177 contacts → |
“Established in 1955, Kohrs Lonnemann Heil Engineers, Inc.(KLH Engineers) is nationally ranked among the top mechanical, electrical, plumbing and technology engineering firms.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 21 | Säzän Group INCsazan.com HQ: Seattle, AZ, United StatesReported employees: 51-200 | Seattle, AZ, United States | 51-200 | Exact match | 162 contacts → |
“Säzän Group is an engineering and consulting firm with offices in Washington, Oregon, and Arizona.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 22 | EEA Consulting Engineerseeace.com HQ: Austin, TX, United StatesReported employees: 51-200 | Austin, TX, United States | 51-200 | Exact match | 161 contacts → |
“EEA Consulting Engineers is a full-service mechanical, electrical and plumbing (MEP)consulting firm serving new and existing facilities in all market sectors.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 23 | Grumman Butkus Associatesgrummanbutkus.com HQ: Evanston, WI, United StatesReported employees: 51-200 | Evanston, WI, United States | 51-200 | Exact match | 159 contacts → |
“Grumman|Butkus Associates (GBA) is a nationally recognized consulting engineering firm that specializes in mechanical, electrical and plumbing design services and energy and…” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 24 | Dunham Associates, INCdunhameng.com HQ: Minneapolis, MN, United StatesReported employees: 51-200 | Minneapolis, MN, United States | 51-200 | Exact match | 159 contacts → |
“Dunham is a full service mechanical and electrical consulting firm.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 25 | Concord Engineering Group, INCconcord-engineering.com HQ: Voorhees, NJ, United StatesReported employees: 51-200 | Voorhees, NJ, United States | 51-200 | Exact match | 152 contacts → |
No recorded description excerpt is available for this public record. | |||||
Showing 25 of 2,266 company matches
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Retrofitting consultants: dataset insights
November 6, 2026These summaries describe recorded coverage in this saved dataset. This page is derived from saved source records; per-contact mobile coverage and email-recency results are not established by this snapshot.
Reported company sizes
2,260 records in the displayed employee bands.
6 matching records are outside the displayed bands or do not have a displayed size. Bars show shares of the displayed bands.
Email recency for this list is measured worldwide rather than for United States, so it is reported there. Company counts and contact totals on this page are exact for United States, over 2,266 companies.
How this company list was built
Describe a niche in your own words: companies installing commercial solar, or manufacturers of sustainable packaging. RevenueBase SmartSearch finds companies whose compiled business descriptions match by meaning. This list is one saved example to adapt.
Where the company descriptions come from
RevenueBase compiles company information from public sources, including company websites and public professional profiles such as LinkedIn, alongside information supplied by companies. The short recorded excerpt shown here is separate from the complete business description used for matching; individual source URLs and collection dates are not provided in this public snapshot.
RevenueBase SmartSearch matching settings
- Exact
- Closest fits to the business described.
- Similar
- Similar businesses with a wider range of fits.
- Related
- Related businesses in and around the category.
- Broad
- A broader set of businesses connected to the description.
RevenueBase SmartSearch · Exact match identifies inclusion in this search's closest semantic matching setting. It is not a per-company confidence score, a literal keyword match, or a quality endorsement.
Selection, ordering and scope
The public list shows selected company records with contact and verified-email coverage. Reported employee bands provide separate company-size context.
This page is derived from saved source records; per-contact mobile coverage and email-recency results are not established by this snapshot.
Recorded company descriptions support research; check company websites for current services. The selected preview is ordered by tracked contacts and is not a list of the best service providers.
Snapshot: November 6, 2026.
RevenueBase is a B2B data infrastructure company. Its September 3, 2026 published methodology describes a graph of 60 million companies and 398.9 million professional contacts; these platform figures differ from this page's totals. Published methodology ↗
Retrofitting consultants by metro
- Retrofitting consultants in New York120
- Retrofitting consultants in San Francisco36
- Retrofitting consultants in Los Angeles35
- Retrofitting consultants in Houston31
- Retrofitting consultants in Austin29
- Retrofitting consultants in Portland29
- Retrofitting consultants in Atlanta28
- Retrofitting consultants in Chicago28
- Retrofitting consultants in Miami28
- Retrofitting consultants in Denver27
Questions about this company list
What does Exact match mean for retrofitting consultants?
The separate RevenueBase SmartSearch column identifies inclusion at the closest semantic matching preset. It is not a literal keyword match, a per-company confidence score or a quality endorsement. Changing the search form opens a new search in RevenueBase; it does not reclassify these saved rows.
How many retrofitting consultants did RevenueBase find based in the United States?
The saved snapshot records 2,266 matching company records, 36,422 tracked contacts and 15,475 verified emails. The public preview displays 25 selected records.
Where do the company descriptions come from?
RevenueBase compiles company information from public sources, including company websites and public professional profiles such as LinkedIn, alongside information supplied by companies. The short recorded excerpt shown here is separate from the complete business description used for matching; individual source URLs and collection dates are not provided in this public snapshot.
How are the public companies ordered?
The selected public records are ordered by contacts tracked in RevenueBase, highest first. Contact coverage is a prospecting measure, not an assessment of the company's services or quality.
How can I get contact information?
Select a company's contact count to open its filtered contacts in RevenueBase. Free signup is required and includes 500 credits and limited free results. Verified emails, direct dials and mobile numbers depend on available coverage.
How current is this list?
Snapshot: November 6, 2026. Review each company's website for current services and locations. A recorded business description does not establish that every company offers every service named in the search.
What do headquarters and employee bands mean?
These are recorded company-level fields, rather than a map of every branch or a count of specialists. Missing headquarters or employee bands are labeled; older records may show a location separately from recorded headquarters.
Build your next target company list
Adapt this niche search and work with available contacts in RevenueBase.
Related lists
Retrofitting consultants by geography
- Retrofitting consultants based in Melbourne, Australia
- Retrofitting consultants based in Sydney, Australia
- Retrofitting consultants based in Belo Horizonte, Brazil
- Retrofitting consultants based in Rio De Janeiro, Brazil
- Retrofitting consultants based in Sao Paulo, Brazil
- Retrofitting consultants based in Calgary, Canada
- Retrofitting consultants based in Montreal, Canada
- Retrofitting consultants based in Toronto, Canada
- Retrofitting consultants based in Vancouver, Canada
- Retrofitting consultants based in Lyon, France
- Retrofitting consultants based in Paris, France
- Retrofitting consultants based in Toulouse, France
Cite this list
RevenueBase Data Team. Top 25 retrofitting consultants based in the United States. Snapshot: November 6, 2026. https://revenuebase.ai/companies/retrofitting-consultants/united-states.
This is a selected public preview of saved company records, rather than an independently verified census. Open the source page ↗
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- Retrofitting consultants based in Melbourne, Australia
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