Company lists · Data refreshed September 2026

Top 25 Architectural conservation companies worldwide

Name: Architectural conservation companies worldwide
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Sep 30, 2026 6,030 companies tracked

RevenueBase identified 6,030 architectural conservation companies worldwide as of September 2026 and tracks 34,189 professional contacts across them, including 10,302 with verified work emails. The United States is the largest market and London the largest hub.

This list covers architectural conservation companies worldwide, matched on what each company actually does as described in its own words. Ranked by team size, largest first. Every row shows the company's own description, its RevenueBase Smart Search rating, and when it was last checked. Data refreshed September 30, 2026. Country and city lists for architectural conservation companies follow the table.

Published by RevenueBase, a B2B data infrastructure company. This list was built with RevenueBase Smart Search, 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 HQ checked on every row RevenueBase Smart Search rating on every row Refreshed Sep 30, 2026 86% judged on-target in blind review

6,030Companies

34,189Contacts tracked

10,302Verified emails

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The 25 largest architectural conservation companies worldwide

Ranked by team size

Top 25 of 6,030 architectural conservation companies worldwide, ranked by team size, largest first. Data refreshed Sep 30, 2026. RevenueBase Smart Search rates how each company's information relates to architectural conservation companies: strong evidence (its own description names it), partial (names part of it), indirect (matched on the rest of its profile rather than the description shown). Click a contact count to view that company's people.
#	Company	RevenueBase Smart Search	Headquarters	Employees	Contacts
1	Renotec NV	Indirect evidence	Geel, BelgiumHQ checked Sep 30, 2026	501-1,000	342 contacts →
	Indirect evidence “Renotec is een gespecialiseerde hoofdaannemer die zich focust op energetische renovatie- en restauratiewerken en geeft zo gebouwen, monumenten, kunstwerken en ondergrondse…” Source: RevenueBase Database · checked Sep 30, 2026
2	Bulley & Andrews	Indirect evidence	Chicago, IL, United StatesHQ checked Sep 30, 2026	201-500	326 contacts →
	Indirect evidence “It’s not just what we build, but why.” Source: RevenueBase Database · checked Sep 30, 2026
3	Stuart Dean Company	Partial evidence	New York, NY, United StatesHQ checked Sep 30, 2026	201-500	230 contacts →
	Partial evidence “Stuart Dean is an international provider of renowned architectural restoration services, specializing in metal refinishing; stone polishing, cleaning and sealing; wood…” Source: RevenueBase Database · checked Sep 30, 2026
4	Quinn Evans	Indirect evidence	Washington, DC, United StatesHQ checked Sep 30, 2026	51-200	225 contacts →
	Indirect evidence “Creators of vital places.” Source: RevenueBase Database · checked Sep 30, 2026
5	ÉVEHA	Indirect evidence	Limoges, FranceHQ checked Sep 30, 2026	201-500	209 contacts →
	Indirect evidence “La société Éveha, bureau d'études et de valorisations archéologiques, est le principal opérateur privé en archéologie préventive.” Source: RevenueBase Database · checked Sep 30, 2026
6	Histoire & Patrimoine	Indirect evidence	Paris, FranceHQ checked Sep 30, 2026	51-200	198 contacts →
	Indirect evidence “Le Groupe Histoire & Patrimoine, filiale du Groupe Altarea, est l’opérateur de référence de l’immobilier patrimonial.” Source: RevenueBase Database · checked Sep 30, 2026
7	Beyer Blinder Belle	Partial evidence	New York, NY, United StatesHQ checked Sep 30, 2026	51-200	198 contacts →
	Partial evidence “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.” Source: RevenueBase Database · checked Sep 30, 2026
8	Berglund Construction	Indirect evidence	Chicago, IL, United StatesHQ checked Sep 30, 2026	201-500	196 contacts →
	Indirect evidence “Berglund Construction is celebrating 115 years in business.” Source: RevenueBase Database · checked Sep 30, 2026
9	Lefèvre	Partial evidence	Gennevilliers, FranceHQ checked Sep 30, 2026	201-500	182 contacts →
	Partial evidence “Lefèvre est une entreprise qui a vu le jour en 1944 pour répondre aux besoins de reconstruction et de restauration du patrimoine architectural français.” Source: RevenueBase Database · checked Sep 30, 2026
10	NEW South Associates, INC	Indirect evidence	Stone Mountain, GA, United StatesHQ checked Sep 30, 2026	51-200	171 contacts →
	Indirect evidence “New South Associates is a women-owned small business providing cultural resource management services, both nationally and internationally.” Source: RevenueBase Database · checked Sep 30, 2026
11	Evergreene Architectural Arts, INC	Partial evidence	Brooklyn, NY, United StatesHQ checked Sep 30, 2026	201-500	147 contacts →
	Partial evidence “Since 1978 EverGreene Architectural Arts has been providing pre-construction, construction and new design services for some of the world's most memorable buildings.” Source: RevenueBase Database · checked Sep 30, 2026
12	Barr & Barr, INC	Indirect evidence	New York, NY, United StatesHQ checked Sep 30, 2026	201-500	144 contacts →
	Indirect evidence “Today Barr & Barr is one of the nation's elite construction companies, recognized by Engineering News Record as one of the nation’s top Construction Managers.” Source: RevenueBase Database · checked Sep 30, 2026
13	Marmol Radziner	Partial evidence	Los Angeles, CA, United StatesHQ checked Sep 30, 2026	51-200	144 contacts →
	Partial evidence “Established in 1989, Marmol Radziner is an award-winning Los Angeles-based design-build architecture and construction firm that integrates architectural design with a full range…” Source: RevenueBase Database · checked Sep 30, 2026
14	City & Country	Indirect evidence	Stansted, United KingdomHQ checked Sep 30, 2026	51-200	139 contacts →
	Indirect evidence “City & Country is a family owned business, founded in 1962, which typically operates in the South and prime markets around key cities.” Source: RevenueBase Database · checked Sep 30, 2026
15	H. Chevalier	Indirect evidence	Suresnes, FranceHQ checked Sep 30, 2026	201-500	133 contacts →
	Indirect evidence “H.” Source: RevenueBase Database · checked Sep 30, 2026
16	St-Denis Thompson	Indirect evidence	Montreal, QC, CanadaHQ checked Sep 30, 2026	201-500	118 contacts →
	Indirect evidence “St-Denis Thompson est reconnue pour son expertise en restauration de bâtiments et en réfection de structures de maçonnerie de pierres et de brique ou de béton.” Source: RevenueBase Database · checked Sep 30, 2026
17	ASI Providing Archaeological & Cultural Heritage Services	Indirect evidence	Toronto, ON, CanadaHQ checked Sep 30, 2026	51-200	110 contacts →
	Indirect evidence “ASI is the largest archaeological and cultural heritage consulting firm in Ontario with over thirty years experience in the production and dissemination of knowledge concerning…” Source: RevenueBase Database · checked Sep 30, 2026
18	KALAM	Indirect evidence	Madrid, SpainHQ checked Sep 30, 2026	501-1,000	109 contacts →
	Indirect evidence “KALAM is one of the most specialized and recognized companies for our work in historic preservation and building rehabilitation.” Source: RevenueBase Database · checked Sep 30, 2026
19	HLZAE	Indirect evidence	New York, NY, United StatesHQ checked Sep 30, 2026	51-200	105 contacts →
	Indirect evidence “Buildings are our passion, new and old, inside and out.” Source: RevenueBase Database · checked Sep 30, 2026
20	ERA Architects INC	Strong evidence	Toronto, ON, CanadaHQ checked Sep 30, 2026	51-200	103 contacts →
	Strong evidence “ERA Architects Inc.(ERA) is an award-winning architecture and planning firm focused on conservation through reactivation.” Source: RevenueBase Database · checked Sep 30, 2026
21	Aagroup Architectes	Indirect evidence	Lyon, FranceHQ checked Sep 30, 2026	51-200	101 contacts →
	Indirect evidence “Associer la force d’un groupe national à un ancrage territorial Il y a 15 ans, Philippe Canivet et Bruno Masson avaient la conviction que la croissance maîtrisée d’une agence…” Source: RevenueBase Database · checked Sep 30, 2026
22	Klein & Hoffman	Partial evidence	Chicago, IL, United StatesHQ checked Sep 30, 2026	51-200	100 contacts →
	Partial evidence “At Klein & Hoffman, we work collaboratively to deliver value-driven architectural restoration and structural engineering solutions.” Source: RevenueBase Database · checked Sep 30, 2026
23	Building Restoration Corporation	Indirect evidence	St. Paul, United StatesHQ checked Sep 30, 2026	51-200	100 contacts →
	Indirect evidence “Building Restoration Corporation (BRC) is the Midwest’s premier restoration contractor, helping owners and property managers extend the life of their buildings with craftsmanship…” Source: RevenueBase Database · checked Sep 30, 2026
24	Concrepoxi Engenharia Ltda	Indirect evidence	BrazilHQ checked Sep 30, 2026	201-500	100 contacts →
	Indirect evidence “Nossas obras nunca são lugar comum.” Source: RevenueBase Database · checked Sep 30, 2026
25	Cultural Resource Analysts, INC	Indirect evidence	Lexington, KY, United StatesHQ checked Sep 30, 2026	51-200	97 contacts →
	Indirect evidence “For four decades, CRA has been recognized as one of the most respected, full-service cultural resource consulting firms in the United States.” Source: RevenueBase Database · checked Sep 30, 2026

RevenueBase Smart Search

RevenueBase Smart Search assesses information from a company’s LinkedIn profile, information supplied directly by the company, its website, and other publicly available sources. It uses that information to rate how closely the company relates to this list’s category: architectural conservation companies. Every row carries its rating and the description the rating was read from, so each one can be checked rather than taken on trust.

Strong evidence: The company's own public description of its business names architectural conservation companies.
Partial evidence: Its own public description names part of architectural conservation companies, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name architectural conservation companies. The match rests on the rest of the company's public profile rather than the one sentence quoted here, so this is the rating to check first.

RevenueBase Smart Search is how these lists are built: RevenueBase's data engine and AI assemble the companies that match a category defined in a user's own words, so a list can be about what companies actually do rather than about whichever industry code they were filed under.

Showing 25 of 6,030 architectural conservation companies worldwide

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Architectural conservation companies worldwide at a glance

As of Sep 30, 2026

30.1%Verified-email coverage

5.7Average contacts per company

1-10Median size (employees)

2.0%Largest-city concentration · London

Sep 30, 2026Page data refreshed

Companies by employee count

1-10

3,935

11-50

1,597

51-200

330

201-500

501-1,000

1,001-5,000

5,001-10,000

10001+

Email recency is reported on each country list linked below.

How this list was built

Company categories are rarely black and white. RevenueBase reads each company's own description of its business to decide whether it belongs among architectural conservation companies, so some rows will be adjacent to the category rather than pure plays. The description and RevenueBase Smart Search rating on every row are there so you can check each match yourself.

Source: The RevenueBase company graph: 60 million companies and 398.9 million professional contacts resolved from primary sources, queried with RevenueBase Smart Search, the natural-language company search available to every RevenueBase user.
Coverage: Every country. Country and city lists for architectural conservation companies are linked below.
What qualifies: Companies worldwide whose own description of what they do matches “architectural conservation companies”. Matching reads each company's description, not its industry code or its name.
RevenueBase Smart Search: RevenueBase Smart Search is how this list is assembled and how each row is rated. RevenueBase's data engine and AI assess a company's LinkedIn profile, information supplied directly by the company, its website and other publicly available information, then relate it to a category defined in a user's own words. Each row is rated strong evidence (its own description names architectural conservation companies), partial evidence (it names part of the category) or indirect evidence (the description shown names none of it and the match rests on the rest of the company's profile). The description supporting each rating is quoted on the row.
What we exclude: Companies whose own description does not clearly place them among architectural conservation companies, and records with no verified work email.
Match quality: In blind human judging of this matching method, 86% of matched companies were on target. Expect roughly 1 in 7 rows to be adjacent to the category rather than a pure play. Every row shows the company's own description and its RevenueBase Smart Search rating so you can judge each match yourself. Read the full methodology: how the lists are built, how the judging worked, and what the figure means.
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 listed company carries at least one verified work email, 10,302 across the full list. 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.
Corrections: Wrong category, wrong headquarters, or a company that has closed? Use “Report an issue” on any row. Reports go to the RevenueBase Data Team and feed back into the company graph.

Architectural conservation companies by location

23 lists · largest first

Every Architectural conservation companies list RevenueBase publishes, by country and city. Counts are matching companies in each list as of its own refresh date.

Countries

Cities

Frequently asked

What is RevenueBase Smart Search?

RevenueBase Smart Search is how RevenueBase decides which companies belong on this list and how strongly each one fits. Its data engine and AI assess a company's LinkedIn profile, information supplied directly by the company, its website and other publicly available information, then relate it to the category the list is about. Each row is rated strong evidence when the company's own description names architectural conservation companies, partial evidence when it names part of the category, and indirect evidence when the description shown names none of it and the match rests on the rest of the company's profile.

How many architectural conservation companies are there worldwide?

RevenueBase identified 6,030 architectural conservation companies worldwide as of September 2026, matched on each company's own description of what it does rather than its industry code.

What is the largest company on this list?

Renotec NV, headquartered in Worldwide, tops this list with the largest team on record.

Which country has the most architectural conservation companies?

The United States leads with 1,070 companies, followed by the United Kingdom (711) and France (476). Every architectural conservation companies list by country and city is linked on this page.

Which city has the most architectural conservation companies?

London leads with 122 headquartered companies, followed by New York (105) and Paris (86).

How do I get contact information for these companies?

A free RevenueBase account lets you run this exact search and work the top results, verified emails and direct dials included. Upgrading unlocks all 10,302 verified decision-maker contacts tracked across these 6,030 companies.

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 Smart Search, 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.