Company lists · Data refreshed September 2026

Top 25 Architectural conservation firms based in the United States

Name: Architectural conservation firms based in the United States
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Sep 30, 2026 4,916 companies tracked

RevenueBase identified 4,916 company matches for architectural conservation firms associated with the United States as of September 2026 and tracks 43,602 professional contacts across them, including 19,699 with verified work emails. New York is the largest hub.

This list covers company matches for architectural conservation firms 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 September 30, 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 30, 2026 How this list was built

4,916Companies

43,602Contacts tracked

19,699Verified emails

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The 25 largest architectural conservation firms based in the United States

Ranked by team size

Top 25 of 4,916 company matches for architectural conservation firms based in the United States, ordered by professional contacts tracked in RevenueBase, largest first. Recorded Sep 30, 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	Little Diversified Architectural Consulting	Exact match	Little Global, VA, United StatesHQ recorded Sep 30, 2026	201-500	509 contacts →
	Exact match “At Little, we deliver results far beyond architecture-results you wouldn’t expect from an architectural firm.” Recorded in the RevenueBase company graph · Sep 30, 2026 · View company records in RevenueBase
2	Chronicle Heritage	Exact match	Phoenix, AZ, United StatesHQ recorded Sep 30, 2026	501-1,000	423 contacts →
	Exact match “We are a cultural resource management firm operating across the United States and internationally, dedicated to stewarding our shared heritage.” Recorded in the RevenueBase company graph · Sep 30, 2026 · View company records in RevenueBase
3	Bulley & Andrews	Exact match	Chicago, IL, United StatesHQ recorded Sep 30, 2026	201-500	326 contacts →
	Exact match “It’s not just what we build, but why.” Recorded in the RevenueBase company graph · Sep 30, 2026 · View company records in RevenueBase
4	BSB Design	Exact match	West Des Moines, IA, United StatesHQ recorded Sep 30, 2026	51-200	281 contacts →
	Exact match “For 60 years, BSB Design has partnered with clients to shape places that perform.” Recorded in the RevenueBase company graph · Sep 30, 2026 · View company records in RevenueBase
5	Lionakis	Exact match	Sacramento, CA, United StatesHQ recorded Sep 30, 2026	201-500	244 contacts →
	Exact match “Lionakis was established in 1909 and is a multi-disciplinary firm specializing in architectural, structural engineering, and interior design services.” Recorded in the RevenueBase company graph · Sep 30, 2026 · View company records in RevenueBase
6	Marx Okubo Associates, INC	Exact match	Denver, CO, United StatesHQ recorded Sep 30, 2026	201-500	234 contacts →
	Exact match “YOUR PROPERTY RISKS, SEEN AND SOLVED.” Recorded in the RevenueBase company graph · Sep 30, 2026 · View company records in RevenueBase
7	Stuart Dean Company	Exact match	New York, NY, United StatesHQ recorded Sep 30, 2026	201-500	230 contacts →
	Exact match “Stuart Dean is an international provider of renowned architectural restoration services, specializing in metal refinishing; stone polishing, cleaning and sealing; wood…” Recorded in the RevenueBase company graph · Sep 30, 2026 · View company records in RevenueBase
8	Allana Buick & Bers, INC	Exact match	Palo Alto, CA, United StatesHQ recorded Sep 30, 2026	201-500	229 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 · Sep 30, 2026 · View company records in RevenueBase
9	Quinn Evans	Exact match	Washington, DC, United StatesHQ recorded Sep 30, 2026	51-200	225 contacts →
	Exact match “Creators of vital places.” Recorded in the RevenueBase company graph · Sep 30, 2026 · View company records in RevenueBase
10	Lamar Johnson Collaborative	Exact match	Chicago, IL, United StatesHQ recorded Sep 30, 2026	201-500	224 contacts →
	Exact match “Lamar Johnson Collaborative (LJC) is a full-service, integrated architecture and design firm.” Recorded in the RevenueBase company graph · Sep 30, 2026 · View company records in RevenueBase
11	CBT Architects	Exact match	Boston, MA, United StatesHQ recorded Sep 30, 2026	51-200	221 contacts →
	Exact match “CBT is working nationally and internationally on projects that range from urban district master planning to large-scale mixed-use developments, civic and cultural venues…” Recorded in the RevenueBase company graph · Sep 30, 2026 · View company records in RevenueBase
12	Dekker	Exact match	Albuquerque, NM, United StatesHQ recorded Sep 30, 2026	201-500	219 contacts →
	Exact match “Dekker is a multidisciplinary architecture firm with offices in Albuquerque, New Mexico; Phoenix, Arizona; and El Paso, Texas.” Recorded in the RevenueBase company graph · Sep 30, 2026 · View company records in RevenueBase
13	OZ Architecture	Exact match	Denver, CO, United StatesHQ recorded Sep 30, 2026	51-200	213 contacts →
	Exact match “At OZ Architecture, we are committed to the creation of excellence in design.” Recorded in the RevenueBase company graph · Sep 30, 2026 · View company records in RevenueBase
14	Beyer Blinder Belle	Exact match	New York, NY, United StatesHQ recorded Sep 30, 2026	51-200	198 contacts →
	Exact match “Founded in 1968, Beyer Blinder Belle Architects is an award-winning architecture, planning, and interiors with offices in New York City, Washington DC, Boston, and Miami.” Recorded in the RevenueBase company graph · Sep 30, 2026 · View company records in RevenueBase
15	Berglund Construction	Exact match	Chicago, IL, United StatesHQ recorded Sep 30, 2026	201-500	196 contacts →
	Exact match “Berglund Construction is celebrating 115 years in business.” Recorded in the RevenueBase company graph · Sep 30, 2026 · View company records in RevenueBase
16	Davis Partnership Architects	Exact match	Denver, CO, United StatesHQ recorded Sep 30, 2026	51-200	183 contacts →
	Exact match “Davis Partnership Architects provides innovative design solutions, earning the trust and respect of our clients and peers alike.” Recorded in the RevenueBase company graph · Sep 30, 2026 · View company records in RevenueBase
17	Sargenti Architects	Exact match	Paramus, NJ, United StatesHQ recorded Sep 30, 2026	51-200	178 contacts →
	Exact match “Sargenti sets standards of distinction through meritorious business practice and exclusivity, providing architecture, engineering, and design that leaves a lasting impression…” Recorded in the RevenueBase company graph · Sep 30, 2026 · View company records in RevenueBase
18	Lord Aeck Sargent	Exact match	Atlanta, GA, United StatesHQ recorded Sep 30, 2026	51-200	176 contacts →
	Exact match “Lord Aeck Sargent (LAS) is a full-service, award-winning architectural and design firm with more than projects completed.” Recorded in the RevenueBase company graph · Sep 30, 2026 · View company records in RevenueBase
19	Ennead Architects	Exact match	New York, NY, United StatesHQ recorded Sep 30, 2026	51-200	171 contacts →
	Exact match “Ennead, a CannonDesign Company, is an internationally acclaimed 160+ person practice based in New York City with offices in Los Angeles and Shanghai.” Recorded in the RevenueBase company graph · Sep 30, 2026 · View company records in RevenueBase
20	NEW South Associates, INC	Exact match	Stone Mountain, GA, United StatesHQ recorded Sep 30, 2026	51-200	171 contacts →
	Exact match “New South Associates is a women-owned small business providing cultural resource management services, both nationally and internationally.” Recorded in the RevenueBase company graph · Sep 30, 2026 · View company records in RevenueBase
21	LMN Architects	Exact match	Seattle, WA, United StatesHQ recorded Sep 30, 2026	51-200	170 contacts →
	Exact match “About LMN Architects Seattle-based LMN Architects specializes in the planning and design of significant public and private facilities, including convention centers, cultural arts…” Recorded in the RevenueBase company graph · Sep 30, 2026 · View company records in RevenueBase
22	Zapata Group, INC Zapata	Exact match	Charlotte, NC, United StatesHQ recorded Sep 30, 2026	51-200	156 contacts →
	Exact match “ZAPATA is a full service architecture and engineering (A-E) and program/construction management firm.” Recorded in the RevenueBase company graph · Sep 30, 2026 · View company records in RevenueBase
23	Sheehan Nagle Hartray Architects, A Woolpert Company	Exact match	Chicago, IL, United StatesHQ recorded Sep 30, 2026	51-200	148 contacts →
	Exact match “Sheehan Nagle Hartray Architects is an award-winning firm with offices in Chicago and London offering architectural design, interior design, and pre-design services including site…” Recorded in the RevenueBase company graph · Sep 30, 2026 · View company records in RevenueBase
24	Evergreene Architectural Arts, INC	Exact match	Brooklyn, NY, United StatesHQ recorded Sep 30, 2026	201-500	147 contacts →
	Exact match “Since 1978 EverGreene Architectural Arts has been providing pre-construction, construction and new design services for some of the world's most memorable buildings.” Recorded in the RevenueBase company graph · Sep 30, 2026 · View company records in RevenueBase
25	Sfcs Architects	Exact match	Roanoke, VA, United StatesHQ recorded Sep 30, 2026	51-200	145 contacts →
	Exact match “SFCS is a full-service architectural, engineering, planning, and interior design firm serving clients nationwide.” Recorded in the RevenueBase company graph · Sep 30, 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 “architectural conservation firms”. 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 4,916 architectural conservation firms based in the United States

See the full list, filter by size, metro and specialty, and access 19,699 tracked professional contacts with verified work emails. Direct dials are available where recorded.

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Architectural conservation firms based in the United States at a glance

As of Sep 30, 2026

45.2%Verified-email coverage

8.9Average contacts per company

1-10Median size (employees)

7.2%Largest-city concentration · New York

Sep 30, 2026Page data refreshed

Companies by employee count

1-10

3,273

11-50

1,409

51-200

198

201-500

501-1,000

5,001-10,000

10001+

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 4,916 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 “architectural conservation firms” 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 19,699 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 30, 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.

Architectural conservation firms by metro

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 “architectural conservation firms”; each Exact match badge shows search membership, not an individual similarity or quality score.

How many architectural conservation firms are there based in the United States?

RevenueBase identified 4,916 company matches for architectural conservation firms associated with the 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?

Little Diversified Architectural Consulting tops the displayed preview by professional contacts tracked in RevenueBase. Recorded headquarters appear in the company rows.

Which city has the most architectural conservation firms?

New York leads with 356 company records, followed by Los Angeles (101) and Chicago (94).

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 19,699 professional contacts with verified work emails tracked across these 4,916 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 30, 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.