Company lists · Data refreshed September 2026

Top 25 Architectural standards consultants based in the United States

Name: Architectural standards consultants 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 1,266 companies tracked

RevenueBase identified 1,266 architectural standards consultants headquartered in the United States as of September 2026 and tracks 15,832 professional contacts across them, including 6,772 with verified work emails. New York is the largest hub.

This list covers architectural standards consultants headquartered in the United States, 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.

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

1,266Companies

15,832Contacts tracked

6,772Verified emails

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The 25 largest architectural standards consultants based in the United States

Ranked by team size

Top 25 of 1,266 architectural standards consultants based in the United States, ranked by team size, largest first. Data refreshed Sep 30, 2026. RevenueBase Smart Search rates how each company's information relates to architectural standards consultants: 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	OLA	Indirect evidence	Austin, TX, United StatesHQ checked Sep 30, 2026	n/a	1,145 contacts →
	Indirect evidence “OLA Sustainability, LLC OLA Sustainability is a consulting firm that focuses on integrating sustainable practices into commercial and multifamily design projects.” Source: RevenueBase Database · checked Sep 30, 2026
2	Simpson Gumpertz & Heger SGH	Indirect evidence	Waltham, MA, United StatesHQ checked Sep 30, 2026	501-1,000	942 contacts →
	Indirect evidence “Simpson Gumpertz & Heger (SGH) is a national engineering firm committed to delivering holistic advice for our clients’ most complex challenges.” Source: RevenueBase Database · checked Sep 30, 2026
3	Little Diversified Architectural Consulting	Partial evidence	Little Global, VA, United StatesHQ checked Sep 30, 2026	201-500	509 contacts →
	Partial evidence “At Little, we deliver results far beyond architecture-results you wouldn’t expect from an architectural firm.” Source: RevenueBase Database · checked Sep 30, 2026
4	MBP Mcdonough Bolyard Peck	Indirect evidence	Fairfax, VA, United StatesHQ checked Sep 30, 2026	201-500	467 contacts →
	Indirect evidence “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.” Source: RevenueBase Database · checked Sep 30, 2026
5	AEI Consultants	Partial evidence	Walnut Creek, CA, United StatesHQ checked Sep 30, 2026	201-500	433 contacts →
	Partial evidence “AEI Consultants provides building, environmental, land and sustainability assessment and consulting services throughout North America.” Source: RevenueBase Database · checked Sep 30, 2026
6	Cosentini Associates	Indirect evidence	Nyc, NY, United StatesHQ checked Sep 30, 2026	201-500	306 contacts →
	Indirect evidence “Cosentini has a 70+ year history of engineering many of the world’s most iconic buildings.” Source: RevenueBase Database · checked Sep 30, 2026
7	Jva, INC	Indirect evidence	Boulder, CO, United StatesHQ checked Sep 30, 2026	51-200	258 contacts →
	Indirect evidence “JVA, Incorporated is an employee-owned consulting engineering firm with offices in Boulder, Fort Collins, Winter Park, Glenwood Springs, and Denver, Colorado.” Source: RevenueBase Database · checked Sep 30, 2026
8	Lionakis	Partial evidence	Sacramento, CA, United StatesHQ checked Sep 30, 2026	201-500	244 contacts →
	Partial evidence “Lionakis was established in 1909 and is a multi-disciplinary firm specializing in architectural, structural engineering, and interior design services.” Source: RevenueBase Database · checked Sep 30, 2026
9	IDS Group, INC	Partial evidence	Irvine, CA, United StatesHQ checked Sep 30, 2026	51-200	205 contacts →
	Partial evidence “IDS is an award-winning engineering and architectural firm offering multidisciplinary consulting services through our staff of 90 professionals.” Source: RevenueBase Database · checked Sep 30, 2026
10	Lord Aeck Sargent	Partial evidence	Atlanta, GA, United StatesHQ checked Sep 30, 2026	51-200	176 contacts →
	Partial evidence “Lord Aeck Sargent (LAS) is a full-service, award-winning architectural and design firm with more than projects completed.” Source: RevenueBase Database · checked Sep 30, 2026
11	Milrose Consultants	Indirect evidence	New York, NY, United StatesHQ checked Sep 30, 2026	201-500	174 contacts →
	Indirect evidence “Milrose is the nation’s premier building lifecycle firm, offering fully integrated services in Permitting, Code Consulting, Municipal Compliance, Special Inspections…” Source: RevenueBase Database · checked Sep 30, 2026
12	Ennead Architects	Indirect evidence	New York, NY, United StatesHQ checked Sep 30, 2026	51-200	171 contacts →
	Indirect evidence “Ennead, a CannonDesign Company, is an internationally acclaimed 160+ person practice based in New York City with offices in Los Angeles and Shanghai.” Source: RevenueBase Database · checked Sep 30, 2026
13	ICC Nta, LLC	Indirect evidence	Nappanee, IN, United StatesHQ checked Sep 30, 2026	51-200	149 contacts →
	Indirect evidence “ICC NTA is a member of the International Code Council (ICC) Family of Solutions, the largest international association of building safety professionals who offer solutions…” Source: RevenueBase Database · checked Sep 30, 2026
14	Sheehan Nagle Hartray Architects, A Woolpert Company	Partial evidence	Chicago, IL, United StatesHQ checked Sep 30, 2026	51-200	148 contacts →
	Partial evidence “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…” Source: RevenueBase Database · checked Sep 30, 2026
15	Steven Winter Associates	Indirect evidence	Norwalk, CT, United StatesHQ checked Sep 30, 2026	51-200	142 contacts →
	Indirect evidence “For over five decades, we’ve been at the forefront of transforming the built environment to be more energy efficient, accessible, healthy, and resilient.” Source: RevenueBase Database · checked Sep 30, 2026
16	Four Seasons Environmental, INC	Indirect evidence	Monroe, OH, United StatesHQ checked Sep 30, 2026	201-500	134 contacts →
	Indirect evidence Source: RevenueBase Database · checked Sep 30, 2026
17	Rand Engineering & Architecture, DPC	Partial evidence	New York, NY, United StatesHQ checked Sep 30, 2026	51-200	126 contacts →
	Partial evidence “RAND Engineering & Architecture, DPC is an independently owned consulting firm serving owners, boards, property managers, architects, and institutions.” Source: RevenueBase Database · checked Sep 30, 2026
18	19six Architects	Partial evidence	San Luis Obispo, CA, United StatesHQ checked Sep 30, 2026	51-200	113 contacts →
	Partial evidence “Founded in 1906, ours is one of the oldest and most established architectural firms in California.” Source: RevenueBase Database · checked Sep 30, 2026
19	BHC Consultants	Partial evidence	Seattle, WA, United StatesHQ checked Sep 30, 2026	51-200	109 contacts →
	Partial evidence “BHC Consultants, LLC (BHC) is an employee owned and managed consulting, engineering, building code and construction compliance, and planning firm with offices in Seattle and…” Source: RevenueBase Database · checked Sep 30, 2026
20	RFS Engineering	Indirect evidence	Laconia, NH, United StatesHQ checked Sep 30, 2026	51-200	108 contacts →
	Indirect evidence “Better systems, better places.” Source: RevenueBase Database · checked Sep 30, 2026
21	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
22	DAG Architects	Partial evidence	Destin, FL, United StatesHQ checked Sep 30, 2026	51-200	102 contacts →
	Partial evidence “DAG Architects, its principals and its employees, is committed to thoughtful design, the architectural profession, and the communities we serve.” Source: RevenueBase Database · checked Sep 30, 2026
23	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
24	AE Works LTD	Indirect evidence	Sewickley, PA, United StatesHQ checked Sep 30, 2026	51-200	89 contacts →
	Indirect evidence “We make building projects a better value.” Source: RevenueBase Database · checked Sep 30, 2026
25	Dimella Shaffer	Partial evidence	Boston, MA, United StatesHQ checked Sep 30, 2026	51-200	86 contacts →
	Partial evidence “DiMella Shaffer is a privately owned, Boston-based architectural planning and design firm whose talented staff of architects, planners, and interior designers create innovative…” 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 standards consultants. 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 standards consultants.
Partial evidence: Its own public description names part of architectural standards consultants, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name architectural standards consultants. 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 1,266 architectural standards consultants based in the United States

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Architectural standards consultants based in the United States at a glance

As of Sep 30, 2026

42.8%Verified-email coverage

12.5Average contacts per company

1-10Median size (employees)

8.0%Largest-city concentration · New York

Sep 30, 2026Page data refreshed

Companies by employee count

1-10

845

11-50

345

51-200

201-500

501-1,000

1,001-5,000

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 1,266 companies.

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 standards consultants, 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.
What qualifies: Companies headquartered in the United States whose own description of what they do matches “architectural standards consultants”. 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 standards consultants), 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 standards consultants, and records with no verified work email. Companies headquartered outside United States are excluded even when they keep an office there.
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, 6,772 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 standards consultants by metro

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 standards consultants, 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 standards consultants are there based in the United States?

RevenueBase identified 1,266 architectural standards consultants headquartered in the United States 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?

OLA, headquartered in Austin, tops this list with the largest team on record.

Which city has the most architectural standards consultants?

New York leads with 101 headquartered companies, followed by Chicago (31) and Portland (24).

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 6,772 verified decision-maker contacts tracked across these 1,266 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.