Company lists · Data refreshed September 2026

Top 25 Multifamily architecture firms based in Philadelphia, United States

Name: Multifamily architecture firms based in Philadelphia, United States
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Sep 17, 2026 53 companies tracked

RevenueBase identified 53 multifamily architecture firms headquartered in Philadelphia, United States as of September 2026 and tracks 333 professional contacts across them, including 178 with verified work emails. New York is the largest hub.

This list covers multifamily architecture firms headquartered in Philadelphia, 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 17, 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 17, 2026 86% judged on-target in blind review

53Companies

333Contacts tracked

178Verified emails

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The 25 largest multifamily architecture firms based in Philadelphia, United States

Ranked by team size

Top 25 of 53 multifamily architecture firms based in Philadelphia, United States, ranked by team size, largest first. Data refreshed Sep 17, 2026. RevenueBase Smart Search rates how each company's information relates to multifamily architecture firms: 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	Jkrp Architects	Partial evidence	Philadelphia, PA, United StatesHQ checked Sep 17, 2026	51-200	70 contacts →
	Partial 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 17, 2026
2	Cosciamoos Architecture	Partial evidence	Philadelphia, PA, United StatesHQ checked Sep 17, 2026	11-50	32 contacts →
	Partial 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 17, 2026
3	PZS Architects	Partial evidence	Philadelphia, PA, United StatesHQ checked Sep 17, 2026	11-50	24 contacts →
	Partial evidence “PZS Architects provides a complete range of architectural, interior design and planning services.” Source: RevenueBase Database · checked Sep 17, 2026
4	Innova Services Corporation	Indirect evidence	Philadelphia, PA, United StatesHQ checked Sep 17, 2026	11-50	23 contacts →
	Indirect evidence “Innova brings more than 20 years of experience in the multi-family industry to bear in order to assist developers in all phases of development: resource efficiency…” Source: RevenueBase Database · checked Sep 17, 2026
5	DAS Architects, INC	Indirect evidence	Philadelphia, PA, United StatesHQ checked Sep 17, 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 17, 2026
6	Harman Deutsch Ohler Architecture	Partial evidence	Philadelphia, PA, United StatesHQ checked Sep 17, 2026	11-50	11 contacts →
	Partial evidence “harman deutsch ohler architecture is a service-oriented architecture and design firm rooted in development, catering to property investors, builders and developers.” Source: RevenueBase Database · checked Sep 17, 2026
7	Atrium Design Group	Partial evidence	Philadelphia, PA, United StatesHQ checked Sep 17, 2026	1-10	11 contacts →
	Partial evidence “Atrium Design Group is an architecture & planning company based out of 8404 Donnybrook Dr, Chevy Chase, Maryland, United States.” Source: RevenueBase Database · checked Sep 17, 2026
8	Toner Architects	Partial evidence	Philadelphia, PA, United StatesHQ checked Sep 17, 2026	1-10	8 contacts →
	Partial evidence “Toner architects was founded with one singular goal in mind; collaborate with clients who enjoy the process of design, architecture, and building.” Source: RevenueBase Database · checked Sep 17, 2026
9	Gnome Architects LLC	Partial evidence	Philadelphia, PA, United StatesHQ checked Sep 17, 2026	1-10	8 contacts →
	Partial evidence “As designers rooted in residential architecture, the word home can mean many different things.” Source: RevenueBase Database · checked Sep 17, 2026
10	Krieger Associates Architects INC	Partial evidence	Philadelphia, PA, United StatesHQ checked Sep 17, 2026	1-10	8 contacts →
	Partial evidence “Krieger + Associates Architects Inc is an award-winning Philadelphia firm providing architectural, planning, and interior design services to residential, institutional, and…” Source: RevenueBase Database · checked Sep 17, 2026
11	Shophouse	Partial evidence	Philadelphia, PA, United StatesHQ checked Sep 17, 2026	1-10	7 contacts →
	Partial evidence “SHOPHOUSE interior architecture + design is a nationally recognized Philadelphia based boutique design firm founded in 2011.” Source: RevenueBase Database · checked Sep 17, 2026
12	Khosla Properties	Indirect evidence	Philadelphia, PA, United StatesHQ checked Sep 17, 2026	1-10	7 contacts →
	Indirect evidence “Khosla Properties is a 100% minority owned and operated real estate firm specializing in investment, development, construction, and management of high-quality multi-family and…” Source: RevenueBase Database · checked Sep 17, 2026
13	Studio Agoos Lovera	Indirect evidence	Philadelphia, PA, United StatesHQ checked Sep 17, 2026	11-50	6 contacts →
	Indirect evidence “Firm History Studio Agoos Lovera began when founding partners Jorge Lovera and Ted Agoos established Agoos/Lovera Architects (A/LA) in September 1983, after several years of…” Source: RevenueBase Database · checked Sep 17, 2026
14	Onion Flats Architecture	Partial evidence	Philadelphia, PA, United StatesHQ checked Sep 17, 2026	1-10	5 contacts →
	Partial evidence “Onion Flats Architecture focuses on community development, multidisciplinary thinking and making, high-performance building technologies and alternative construction methodologies.” Source: RevenueBase Database · checked Sep 17, 2026
15	K Yoder Design	Partial evidence	Philadelphia, PA, United StatesHQ checked Sep 17, 2026	1-10	5 contacts →
	Partial evidence “Since 2010, k YODER design has evolved into a leading architecture and interiors firm for clients seeking a classic modern aesthetic and cohesion across design, furniture, décor…” Source: RevenueBase Database · checked Sep 17, 2026
16	Millan Architects	Partial evidence	Philadelphia, PA, United StatesHQ checked Sep 17, 2026	1-10	4 contacts →
	Partial evidence “Millan Architects is an architecture firm based in Philadelphia devoted to crafting thoughtful spaces of enduring beauty, lasting value and environmental sustainability.” Source: RevenueBase Database · checked Sep 17, 2026
17	Kass & Associates	Partial evidence	Philadelphia, PA, United StatesHQ checked Sep 17, 2026	1-10	4 contacts →
	Partial evidence “Kass & Associates is an architecture and design firm based in Philadelphia.” Source: RevenueBase Database · checked Sep 17, 2026
18	Alma Architecture	Partial evidence	Philadelphia, PA, United StatesHQ checked Sep 17, 2026	11-50	4 contacts →
	Partial evidence “ALMA Architecture was founded in 2013 by Adrienne McKinney in Center City Philadelphia.” Source: RevenueBase Database · checked Sep 17, 2026
19	Avlv Architecture & Development	Partial evidence	Philadelphia, PA, United StatesHQ checked Sep 17, 2026	1-10	3 contacts →
	Partial evidence “We are AVLV (Avolve), a vertically integrated sustainable architecture, development, and real estate firm built to do things differently.” Source: RevenueBase Database · checked Sep 17, 2026
20	Loubier Design	Indirect evidence	Philadelphia, PA, United StatesHQ checked Sep 17, 2026	1-10	3 contacts →
	Indirect evidence Source: RevenueBase Database · checked Sep 17, 2026
21	Studio 111 Architecture	Partial evidence	Philadelphia, PA, United StatesHQ checked Sep 17, 2026	1-10	3 contacts →
	Partial evidence “Studio Architecture is a Philadelphia based design firm, providing service throughout the region.” Source: RevenueBase Database · checked Sep 17, 2026
22	In Earnest Design	Partial evidence	Philadelphia, PA, United StatesHQ checked Sep 17, 2026	1-10	2 contacts →
	Partial evidence “In Earnest Design specializes in residential and mixed-use architecture of all sizes.” Source: RevenueBase Database · checked Sep 17, 2026
23	Level Nine Architects	Partial evidence	Philadelphia, PA, United StatesHQ checked Sep 17, 2026	1-10	2 contacts →
	Partial evidence “Level Nine Architects (Level 9), is a distinguished Philadelphia-based firm specializing in a comprehensive range of architectural services.” Source: RevenueBase Database · checked Sep 17, 2026
24	Atlantes Architects	Partial evidence	Philadelphia, PA, United StatesHQ checked Sep 17, 2026	11-50	2 contacts →
	Partial evidence “Architecture, Design and Construction Company working with investors, developers and all our clients to build a complete project from concept through construction.” Source: RevenueBase Database · checked Sep 17, 2026
25	Layer Architecture	Partial evidence	Philadelphia, PA, United StatesHQ checked Sep 17, 2026	1-10	2 contacts →
	Partial evidence “LAYER Architecture is a nimble, hands-on, full-service design practice.” Source: RevenueBase Database · checked Sep 17, 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: multifamily architecture firms. 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 multifamily architecture firms.
Partial evidence: Its own public description names part of multifamily architecture firms, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name multifamily architecture firms. 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 53 multifamily architecture firms based in Philadelphia, United States

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Multifamily architecture firms based in Philadelphia, United States at a glance

As of Sep 17, 2026

53.5%Verified-email coverage

6.3Average contacts per company

1-10Median size (employees)

801.9%Largest-city concentration · New York

Sep 17, 2026Page data refreshed

Companies by employee count

1-10

11-50

51-200

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 53 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 multifamily architecture firms, 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 “multifamily architecture firms”. 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 multifamily architecture firms), 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 multifamily architecture firms, 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, 178 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 17, 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.

Multifamily architecture firms by metro in the United States

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 multifamily architecture firms, 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 multifamily architecture firms are there based in Philadelphia, United States?

RevenueBase identified 53 multifamily architecture firms headquartered in Philadelphia, 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?

Jkrp Architects, headquartered in Philadelphia, tops this list with the largest team on record.

Which city has the most multifamily architecture firms?

New York leads with 425 headquartered companies, followed by Los Angeles (229) and Seattle (156).

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 178 verified decision-maker contacts tracked across these 53 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 17, 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.