Company lists · Data refreshed September 2026

Top 25 Architecture companies based in Philadelphia, United States

Name: Architecture companies based in Philadelphia, United States
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Sep 6, 2026 241 companies tracked

This directory lists 241 architecture companies based in Philadelphia, United States, with 3,238 contacts and 1,715 email addresses. Across the United States, New York is the largest hub for this category (2,147 companies); Philadelphia has 241.

Architecture companies design buildings and other structures, develop plans and specifications, and advise clients on construction, renovation, and project delivery. This list covers companies that provide architectural design, planning, documentation, or related building design services. Ranked by team size, largest first. Data current as of September 6, 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 6, 2026 86% judged on-target in blind review

241Companies

3,238Contacts tracked

1,715Verified emails

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The 25 largest architecture companies based in Philadelphia, United States

Ranked by team size

Top 25 of 241 architecture companies based in Philadelphia, United States, ranked by team size, largest first. Data refreshed Sep 6, 2026. RevenueBase Smart Search rates how each company's information relates to architecture 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	Ewingcole	Strong evidence	Philadelphia, PA, United StatesHQ checked Sep 6, 2026	201-500	509 contacts →
	Strong evidence “EwingCole is a nationally recognized architecture, engineering, interior design, and planning firm with offices in Atlanta, Baltimore, Charlotte, Fort Worth, Irvine, New York…” Source: RevenueBase Database · checked Sep 6, 2026
2	Ballinger	Indirect evidence	Philadelphia, PA, United StatesHQ checked Sep 6, 2026	201-500	316 contacts →
	Indirect evidence “Ballinger's Philadelphia-based, integrated team of architects, engineers, planners, and interior designers works with visionary institutions to create places that empower those…” Source: RevenueBase Database · checked Sep 6, 2026
3	FCA	Strong evidence	Philadelphia, PA, United StatesHQ checked Sep 6, 2026	51-200	249 contacts →
	Strong evidence “FCA is a full-service architectural and design firm.” Source: RevenueBase Database · checked Sep 6, 2026
4	WRT	Indirect evidence	Philadelphia, PA, United StatesHQ checked Sep 6, 2026	51-200	180 contacts →
	Indirect evidence “WRT is a team of planners, urban designers, architects, and landscape architects.” Source: RevenueBase Database · checked Sep 6, 2026
5	Klingstubbins	Indirect evidence	Philadelphia, PA, United StatesHQ checked Sep 6, 2026	10001+	147 contacts →
	Indirect evidence “Kling Stubbins was acquired by Jacobs in 2011.” Source: RevenueBase Database · checked Sep 6, 2026
6	O'donnell & Naccarato	Indirect evidence	Philadelphia, PA, United StatesHQ checked Sep 6, 2026	51-200	103 contacts →
	Indirect evidence “O’Donnell & Naccarato’s structural engineering practice has grown from a 3-person company in 1981 into a national firm of over 120 people spread over ten offices.” Source: RevenueBase Database · checked Sep 6, 2026
7	Kierantimberlake	Indirect evidence	Philadelphia, PA, United StatesHQ checked Sep 6, 2026	51-200	74 contacts →
	Indirect evidence “The alchemy of art, science, analysis, and intuition with regard to the built environment is our core mission.” Source: RevenueBase Database · checked Sep 6, 2026
8	Jkrp Architects	Strong evidence	Philadelphia, PA, United StatesHQ checked Sep 6, 2026	51-200	70 contacts →
	Strong evidence “Residential \| Entertainment \| Retail \| Self Storage JKRP Architects is a full-service architectural firm dedicated to bringing client visions to life.” Source: RevenueBase Database · checked Sep 6, 2026
9	Jacobswyper Architects	Strong evidence	Philadelphia, PA, United StatesHQ checked Sep 6, 2026	51-200	63 contacts →
	Strong evidence “JacobsWyper Architects is a certified WBE architectural, planning and interior design firm with locations in Philadelphia, PA, Raleigh, N.C, and Austin, TX.” Source: RevenueBase Database · checked Sep 6, 2026
10	Formcraft	Indirect evidence	Philadelphia, PA, United StatesHQ checked Sep 6, 2026	51-200	53 contacts →
	Indirect evidence “Formcraft is a design and build firm creating successful workplace strategies, translating companies' visions into engaging workplaces where business and people thrive.” Source: RevenueBase Database · checked Sep 6, 2026
11	The Lighting Practice	Indirect evidence	Philadelphia, PA, United StatesHQ checked Sep 6, 2026	11-50	42 contacts →
	Indirect evidence “The Lighting Practice transforms ordinary spaces into places that are extraordinary, captivating, and memorable.” Source: RevenueBase Database · checked Sep 6, 2026
12	Keast & Hood	Indirect evidence	Philadelphia, PA, United StatesHQ checked Sep 6, 2026	11-50	41 contacts →
	Indirect evidence “Keast & Hood is a WBE/WOSB structural engineering firm founded in 1953 and located in Philadelphia, PA.” Source: RevenueBase Database · checked Sep 6, 2026
13	Digsau	Strong evidence	Philadelphia, PA, United StatesHQ checked Sep 6, 2026	11-50	41 contacts →
	Strong evidence “DIGSAU practices contemporary architecture, urbanism and environmental design.” Source: RevenueBase Database · checked Sep 6, 2026
14	Ecbuild	Indirect evidence	Philadelphia, United StatesHQ checked Sep 6, 2026	51-200	40 contacts →
	Indirect evidence “ECBuild is a construction management firm created specifically to meet the changing needs of our clients across a variety of industries.” Source: RevenueBase Database · checked Sep 6, 2026
15	Blackney Hayes	Indirect evidence	Philadelphia, PA, United StatesHQ checked Sep 6, 2026	11-50	38 contacts →
	Indirect evidence “What’s the story of your work?” Source: RevenueBase Database · checked Sep 6, 2026
16	IEI Group, LTD	Strong evidence	Philadelphia, PA, United StatesHQ checked Sep 6, 2026	11-50	33 contacts →
	Strong evidence “IEI is a nationally recognized, award-winning, 20-person architecture, interior design and facilities planning firm based in Northern Liberties for last 20 years.” Source: RevenueBase Database · checked Sep 6, 2026
17	Cosciamoos Architecture	Strong evidence	Philadelphia, PA, United StatesHQ checked Sep 6, 2026	11-50	32 contacts →
	Strong evidence “CosciaMoos Architecture, founded by principals Sergio Coscia and David Moos, provides architectural design and planning across a broad range of project types, serving clients…” Source: RevenueBase Database · checked Sep 6, 2026
18	Kelly Maiello Architects	Strong evidence	Philadelphia, PA, United StatesHQ checked Sep 6, 2026	11-50	26 contacts →
	Strong evidence “Kelly Maiello Architects (formerly Kelly/Maiello) has provided architectural and planning services in Philadelphia and the region for nearly 50 years.” Source: RevenueBase Database · checked Sep 6, 2026
19	CLR Design	Indirect evidence	Philadelphia, PA, United StatesHQ checked Sep 6, 2026	11-50	26 contacts →
	Indirect evidence “We are a team of passionate professionals who bring varied experience and steadfast dedication to every project.” Source: RevenueBase Database · checked Sep 6, 2026
20	CBP Architects	Strong evidence	Philadelphia, PA, United StatesHQ checked Sep 6, 2026	11-50	24 contacts →
	Strong evidence “CBP Architects is an architecture firm providing design services to governmental, educational, institutional and private sector clients.” Source: RevenueBase Database · checked Sep 6, 2026
21	PZS Architects	Strong evidence	Philadelphia, PA, United StatesHQ checked Sep 6, 2026	11-50	24 contacts →
	Strong evidence “PZS Architects provides a complete range of architectural, interior design and planning services.” Source: RevenueBase Database · checked Sep 6, 2026
22	MJ Settelen Construction, LLC	Indirect evidence	Philadelphia, PA, United StatesHQ checked Sep 6, 2026	11-50	24 contacts →
	Indirect evidence “MJ Settelen Construction is a Philadelphia-based firm providing General Contracting, Construction Management, Design-Build, Preconstruction, Consulting, and Facilities Services.” Source: RevenueBase Database · checked Sep 6, 2026
23	Wulff Architects	Indirect evidence	Philadelphia, PA, United StatesHQ checked Sep 6, 2026	11-50	23 contacts →
	Indirect evidence “Named after its founder and President, Al Wulff, Wulff Architects was envisioned in 1992 as a community of architects and designers working together to advance both commercial…” Source: RevenueBase Database · checked Sep 6, 2026
24	DAS Architects, INC	Indirect evidence	Philadelphia, PA, United StatesHQ checked Sep 6, 2026	11-50	23 contacts →
	Indirect evidence “DAS Architects, one of the country’s top design firms, has developed an exceptional resume of hospitality, retail, corporate and residential projects.” Source: RevenueBase Database · checked Sep 6, 2026
25	MGA Partners	Strong evidence	Philadelphia, PA, United StatesHQ checked Sep 6, 2026	11-50	22 contacts →
	Strong evidence “OUR FIRM \| Based in Philadelphia, MGA Partners is a nationally recognized firm distinguished for architecture that is considered, crafted, and resonant with its place.” Source: RevenueBase Database · checked Sep 6, 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: architecture 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 architecture companies.
Partial evidence: Its own public description names part of architecture companies, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name architecture 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 241 architecture companies based in Philadelphia, United States

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Architecture companies based in Philadelphia, United States at a glance

As of Sep 6, 2026

53.0%Verified-email coverage

13.4Average contacts per company

1-10Median size (employees)

Sep 6, 2026Page data refreshed

Companies by employee count

1-10

154

11-50

51-200

201-500

10001+

Email recency for this list is measured across the whole United States list rather than for Philadelphia, so it is reported there. Company counts and contact totals on this page are exact for Philadelphia, over 241 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 architecture 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.
What qualifies: Companies headquartered in Philadelphia, United States whose own description of what they do matches “architecture 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 architecture 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 architecture companies, and records with no verified work email. Companies headquartered outside Philadelphia 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, 1,715 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 6, 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.

Architecture companies by metro in the United States

Frequently asked

How many architecture companies are based in Philadelphia, United States?

RevenueBase counts 241 architecture companies listed based in Philadelphia, United States. The directory also includes 3,238 contacts and 1,715 email addresses.

Which city in the United States has the most architecture companies?

New York leads the United States with 2,147 headquartered companies, followed by Los Angeles (924) and Chicago (642). Philadelphia has 241.

Where can I find contacts at architecture companies?

This directory includes 3,238 contacts and 1,715 email addresses for architecture companies based in Philadelphia, United States.

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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.