Company lists · Data refreshed September 2026

Top 25 Public interest design firms based in Philadelphia, United States

Name: Public interest design 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 20, 2026 119 companies tracked

RevenueBase identified 119 company matches for public interest design firms associated with Philadelphia, United States as of September 2026 and tracks 2,445 professional contacts across them, including 1,341 with verified work emails. Across the United States, New York is the largest hub for this category (720 companies); Philadelphia has 119.

This list covers company matches for public interest design firms associated with Philadelphia, 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 20, 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 20, 2026 How this list was built

119Companies

2,445Contacts tracked

1,341Verified emails

Explore this list → Free signup · no credit card · 500 free credits

The 25 largest public interest design firms based in Philadelphia, United States

Ranked by team size

Top 25 of 119 company matches for public interest design firms based in Philadelphia, United States, ordered by professional contacts tracked in RevenueBase, largest first. Recorded Sep 20, 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	Ewingcole	Exact match	Philadelphia, PA, United StatesHQ recorded Sep 20, 2026	201-500	509 contacts →
	Exact match “EwingCole is a nationally recognized architecture, engineering, interior design, and planning firm with offices in Atlanta, Baltimore, Charlotte, Fort Worth, Irvine, New York…” Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase
2	Ballinger	Exact match	Philadelphia, PA, United StatesHQ recorded Sep 20, 2026	201-500	316 contacts →
	Exact match “Ballinger's Philadelphia-based, integrated team of architects, engineers, planners, and interior designers works with visionary institutions to create places that empower those…” Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase
3	FCA	Exact match	Philadelphia, PA, United StatesHQ recorded Sep 20, 2026	51-200	249 contacts →
	Exact match “FCA is a full-service architectural and design firm.” Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase
4	WRT	Exact match	Philadelphia, PA, United StatesHQ recorded Sep 20, 2026	51-200	180 contacts →
	Exact match “WRT is a team of planners, urban designers, architects, and landscape architects.” Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase
5	OLIN	Exact match	Philadelphia, PA, United StatesHQ recorded Sep 20, 2026	51-200	162 contacts →
	Exact match “OLIN is dedicated to affecting positive change through landscape architecture, urban design and planning.” Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase
6	Kierantimberlake	Exact match	Philadelphia, PA, United StatesHQ recorded Sep 20, 2026	51-200	74 contacts →
	Exact match “The alchemy of art, science, analysis, and intuition with regard to the built environment is our core mission.” Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase
7	Jkrp Architects	Exact match	Philadelphia, PA, United StatesHQ recorded Sep 20, 2026	51-200	70 contacts →
	Exact match “Residential \| Entertainment \| Retail \| Self Storage JKRP Architects is a full-service architectural firm dedicated to bringing client visions to life.” Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase
8	Jacobswyper Architects	Exact match	Philadelphia, PA, United StatesHQ recorded Sep 20, 2026	51-200	63 contacts →
	Exact match “JacobsWyper Architects is a certified WBE architectural, planning and interior design firm with locations in Philadelphia, PA, Raleigh, N.C, and Austin, TX.” Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase
9	Digsau	Exact match	Philadelphia, PA, United StatesHQ recorded Sep 20, 2026	11-50	41 contacts →
	Exact match “DIGSAU practices contemporary architecture, urbanism and environmental design.” Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase
10	Blackney Hayes	Exact match	Philadelphia, PA, United StatesHQ recorded Sep 20, 2026	11-50	38 contacts →
	Exact match “What’s the story of your work?” Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase
11	IEI Group, LTD	Exact match	Philadelphia, PA, United StatesHQ recorded Sep 20, 2026	11-50	33 contacts →
	Exact match “IEI is a nationally recognized, award-winning, 20-person architecture, interior design and facilities planning firm based in Northern Liberties for last 20 years.” Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase
12	Cosciamoos Architecture	Exact match	Philadelphia, PA, United StatesHQ recorded Sep 20, 2026	11-50	32 contacts →
	Exact match “CosciaMoos Architecture, founded by principals Sergio Coscia and David Moos, provides architectural design and planning across a broad range of project types, serving clients…” Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase
13	CLR Design	Exact match	Philadelphia, PA, United StatesHQ recorded Sep 20, 2026	11-50	26 contacts →
	Exact match “We are a team of passionate professionals who bring varied experience and steadfast dedication to every project.” Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase
14	Kelly Maiello Architects	Exact match	Philadelphia, PA, United StatesHQ recorded Sep 20, 2026	11-50	26 contacts →
	Exact match “Kelly Maiello Architects (formerly Kelly/Maiello) has provided architectural and planning services in Philadelphia and the region for nearly 50 years.” Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase
15	PZS Architects	Exact match	Philadelphia, PA, United StatesHQ recorded Sep 20, 2026	11-50	24 contacts →
	Exact match “PZS Architects provides a complete range of architectural, interior design and planning services.” Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase
16	CBP Architects	Exact match	Philadelphia, PA, United StatesHQ recorded Sep 20, 2026	11-50	24 contacts →
	Exact match “CBP Architects is an architecture firm providing design services to governmental, educational, institutional and private sector clients.” Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase
17	Wulff Architects	Exact match	Philadelphia, PA, United StatesHQ recorded Sep 20, 2026	11-50	23 contacts →
	Exact match “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…” Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase
18	Innova Services Corporation	Exact match	Philadelphia, PA, United StatesHQ recorded Sep 20, 2026	11-50	23 contacts →
	Exact match “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…” Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase
19	DAS Architects, INC	Exact match	Philadelphia, PA, United StatesHQ recorded Sep 20, 2026	11-50	23 contacts →
	Exact match “DAS Architects, one of the country’s top design firms, has developed an exceptional resume of hospitality, retail, corporate and residential projects.” Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase
20	MGA Partners	Exact match	Philadelphia, PA, United StatesHQ recorded Sep 20, 2026	11-50	22 contacts →
	Exact match “OUR FIRM \| Based in Philadelphia, MGA Partners is a nationally recognized firm distinguished for architecture that is considered, crafted, and resonant with its place.” Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase
21	Erdy Mchenry Architecture, LLC	Exact match	Philadelphia, PA, United StatesHQ recorded Sep 20, 2026	11-50	19 contacts →
	Exact match “Erdy McHenry Architecture is a Philadelphia-based design studio.” Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase
22	Cicada Architecture Planning, INC	Exact match	Philadelphia, PA, United StatesHQ recorded Sep 20, 2026	11-50	18 contacts →
	Exact match “CICADA Architecture/Planning is a certified Women Business Enterprise (WBE) delivering architecture, planning, and interior design services-from early visioning, feasibility…” Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase
23	Daroff Design	Exact match	Philadelphia, United StatesHQ recorded Sep 20, 2026	11-50	18 contacts →
	Exact match “Daroff Design Inc + DDI Architects, PC (DDI), is an award winning, internationally acclaimed interiors, architecture, branding, and graphic design firm.” Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase
24	David Rubin Land Collective	Exact match	Philadelphia, PA, United StatesHQ recorded Sep 20, 2026	11-50	16 contacts →
	Exact match “DAVID RUBIN Land Collective is driven by design empathy and emphasizes holistically-sustainable principles, with social sustainability leading the design effort.” Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase
25	SMP Architects	Exact match	Philadelphia, PA, United StatesHQ recorded Sep 20, 2026	11-50	15 contacts →
	Exact match “Attention to environmental concerns and historic, cultural, and architectural contexts are the hallmarks of our firm.” Recorded in the RevenueBase company graph · Sep 20, 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 “public interest design 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 119 public interest design firms based in Philadelphia, United States

See the full list, filter by size, metro and specialty, and access 1,341 tracked professional contacts with verified work emails. Direct dials are available where recorded.

Free signup · no credit card

View the full list →

Public interest design firms based in Philadelphia, United States at a glance

As of Sep 20, 2026

54.8%Verified-email coverage

20.5Average contacts per company

1-10Median size (employees)

Sep 20, 2026Page data refreshed

Companies by employee count

1-10

11-50

51-200

201-500

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 119 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 Philadelphia, United States whose business descriptions match “public interest design 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 1,341 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 20, 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.

Public interest design firms by metro in the United States

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

How many public interest design firms are there based in Philadelphia, United States?

RevenueBase identified 119 company matches for public interest design firms associated with Philadelphia, 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?

Ewingcole tops the displayed preview by professional contacts tracked in RevenueBase. Recorded headquarters appear in the company rows.

Which city in the United States has the most public interest design firms?

New York leads the United States with 720 company records, followed by Los Angeles (290) and Chicago (236). Philadelphia has 119.

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 1,341 professional contacts with verified work emails tracked across these 119 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 20, 2026.

Ready to reach these companies? Verified emails and direct dials for all 119 public interest design firms based in Philadelphia, United States. Start with a free account, no credit card.

Download this list →

Related lists

Public interest design firms by geography

Browse the directory

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.