Company lists · Data refreshed September 2026

Top 12 Engineering consultancies based in Rockville, United States

Name: Engineering consultancies based in Rockville, United States
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Sep 24, 2026 25 companies tracked

RevenueBase identified 25 company matches for engineering consultancies associated with Rockville, United States as of September 2026 and tracks 2,463 professional contacts across them, including 1,070 with verified work emails. Across the United States, Houston is the largest hub for this category (622 companies); Rockville has 25.

This list covers company matches for engineering consultancies associated with Rockville, 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 September 24, 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.

How to read this list RevenueBase SmartSearch · Exact Recorded Sep 24, 2026 How this list was built

25Companies

2,463Contacts tracked

1,070Verified emails

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The 12 largest engineering consultancies based in Rockville, United States

Ranked by team size

Top 12 of 25 company matches for engineering consultancies based in Rockville, United States, ordered by professional contacts tracked in RevenueBase, largest first. Recorded Sep 24, 2026. The RevenueBase SmartSearch column shows Exact match membership in this saved search. Click a contact count to view that company's people. Totals use company locations recorded by RevenueBase; the displayed preview is a smaller selection.
#	Company	RevenueBase SmartSearch	Headquarters	Employees	Contacts
1	Apex Companies	Exact match	Rockville, MD, United StatesHQ recorded Sep 24, 2026	1,001-5,000	1,137 contacts →
	Exact match “Who is Apex?” Recorded in the RevenueBase company graph · Sep 24, 2026 · View company records in RevenueBase
2	AMT Engineering	Exact match	Rockville, MD, United StatesHQ recorded Sep 24, 2026	501-1,000	358 contacts →
	Exact match “AMT is recognized as an Engineering News Record (ENR) Top 500 Design Firm and among the Largest Engineering Firms in Greater Washington by the Washington Business Journal.” Recorded in the RevenueBase company graph · Sep 24, 2026 · View company records in RevenueBase
3	KDB Mechanical LLC	Exact match	Rockville, MD, United StatesHQ recorded Sep 24, 2026	501-1,000	195 contacts →
	Exact match “We are a full service engineering and construction company with unparalleled experience in commercial, industrial and government projects.” Recorded in the RevenueBase company graph · Sep 24, 2026 · View company records in RevenueBase
4	Soltesz	Exact match	Rockville, MD, United StatesHQ recorded Sep 24, 2026	51-200	143 contacts →
	Exact match “Soltesz is a multi-disciplinary engineering firm experienced in navigating clients through each phase of a project, while providing innovative effective solutions.” Recorded in the RevenueBase company graph · Sep 24, 2026 · View company records in RevenueBase
5	Nehmer And HVS Design	Exact match	Rockville, MD, United StatesHQ recorded Sep 24, 2026	11-50	37 contacts →
	Exact match “Nehmer is an award winning Architecture, Construction Project Management, and Design and Construction Consulting Firm specializing in the hospitality industry.” Recorded in the RevenueBase company graph · Sep 24, 2026 · View company records in RevenueBase
6	WFT Engineering, INC	Exact match	Rockville, MD, United StatesHQ recorded Sep 24, 2026	11-50	25 contacts →
	Exact match “WFT Engineering is an award-winning engineering design firm providing mechanical, electrical, plumbing and fire life safety planning, design, commissioning, and construction…” Recorded in the RevenueBase company graph · Sep 24, 2026 · View company records in RevenueBase
7	Meyer Consulting Engineers Corporation	Exact match	Rockville, MD, United StatesHQ recorded Sep 24, 2026	11-50	18 contacts →
	Exact match “Meyer Consulting Engineers (MCE) specializes in Structural Engineering, Special Inspections, Quality Management, Parking Consultations, Material Testing and all ancillary…” Recorded in the RevenueBase company graph · Sep 24, 2026 · View company records in RevenueBase
8	Warner Construction Consultants, INC	Exact match	Rockville, MD, United StatesHQ recorded Sep 24, 2026	11-50	17 contacts →
	Exact match “Founded in 1981, Warner is a global, multi-disciplined firm providing expert consulting services to a wide variety of construction industry clients.” Recorded in the RevenueBase company graph · Sep 24, 2026 · View company records in RevenueBase
9	OLBN	Exact match	Rockville, MD, United StatesHQ recorded Sep 24, 2026	11-50	16 contacts →
	Exact match “OLBN is a full service architectural and engineering firm providing Architectural, Engineering and Construction (A/E/C) support services, with our primary project types being…” Recorded in the RevenueBase company graph · Sep 24, 2026 · View company records in RevenueBase
10	CS Consulting Engineers, INC	Exact match	Rockville, MD, United StatesHQ recorded Sep 24, 2026	1-10	12 contacts →
	Exact match “CS Consulting Engineers, Inc.(CSCE) is as Service-Disabled Veteran Owned Small Business (SDVOSB).” Recorded in the RevenueBase company graph · Sep 24, 2026 · View company records in RevenueBase
11	Endesco, INC	Exact match	Rockville, MD, United StatesHQ recorded Sep 24, 2026	11-50	11 contacts →
	Exact match “Endesco, Inc, founded in 1997 as a professional consultancy organization, is a multi-disciplined engineering design, consulting and construction management firm based in the…” Recorded in the RevenueBase company graph · Sep 24, 2026 · View company records in RevenueBase
12	Cagley & Associates	Exact match	Rockville, MD, United StatesHQ recorded Sep 24, 2026	11-50	7 contacts →
	Exact match “Cagley & Associates is a consulting structural engineering firm providing elegant, efficient, and economical building structures.” Recorded in the RevenueBase company graph · Sep 24, 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 “engineering consultancies”. 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 12 of 25 engineering consultancies based in Rockville, United States

See the full list, filter by size, metro and specialty, and access 1,070 tracked professional contacts with verified work emails. Direct dials are available where recorded.

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Engineering consultancies based in Rockville, United States at a glance

As of Sep 24, 2026

43.4%Verified-email coverage

98.5Average contacts per company

11-50Median size (employees)

Sep 24, 2026Page data refreshed

Companies by employee count

1-10

11-50

51-200

501-1,000

1,001-5,000

Email recency for this list is measured across the whole United States list rather than for Rockville, so it is reported there. Company counts and contact totals on this page are exact for Rockville, over 25 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 Rockville, United States whose business descriptions match “engineering consultancies” 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 1,070 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 September 24, 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.

Engineering consultancies by metro in the United States

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 “engineering consultancies”; each Exact match badge shows search membership, not an individual similarity or quality score.

How many engineering consultancies are there based in Rockville, United States?

RevenueBase identified 25 company matches for engineering consultancies associated with Rockville, United States as of September 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?

Apex Companies tops the displayed preview by professional contacts tracked in RevenueBase. Recorded headquarters appear in the company rows.

Which city in the United States has the most engineering consultancies?

Houston leads the United States with 622 company records, followed by New York (449) and Austin (208). Rockville has 25.

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 1,070 professional contacts with verified work emails tracked across these 25 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 September 24, 2026.

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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.