Company lists · Data refreshed September 2026

Top 25 Public space design firms based in Seattle, United States

Name: Public space design firms based in Seattle, United States
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Sep 20, 2026 170 companies tracked

RevenueBase identified 170 public space design firms headquartered in Seattle, United States as of September 2026 and tracks 4,498 professional contacts across them, including 2,470 with verified work emails. New York is the largest hub.

This list covers public space design firms headquartered in Seattle, 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 20, 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 20, 2026 86% judged on-target in blind review

170Companies

4,498Contacts tracked

2,470Verified emails

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The 25 largest public space design firms based in Seattle, United States

Ranked by team size

Top 25 of 170 public space design firms based in Seattle, United States, ranked by team size, largest first. Data refreshed Sep 20, 2026. RevenueBase Smart Search rates how each company's information relates to public space design 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	Nbbj Design	Partial evidence	Seattle, WA, United StatesHQ checked Sep 20, 2026	501-1,000	808 contacts →
	Partial evidence “NBBJ is an ideas-driven architecture and design firm dedicated to creating connected communities, healthier buildings and a more resilient environment.” Source: RevenueBase Database · checked Sep 20, 2026
2	Mg2 Design	Partial evidence	Seattle, WA, United StatesHQ checked Sep 20, 2026	201-500	520 contacts →
	Partial evidence “MG2 is a global architecture, design, construction & branding studio.” Source: RevenueBase Database · checked Sep 20, 2026
3	NAC	Partial evidence	Seattle, WA, United StatesHQ checked Sep 20, 2026	201-500	377 contacts →
	Partial evidence “NAC is an award-winning design firm with talented team members working in offices in Seattle and Spokane, WA, Los Angeles and San Diego, CA, and Columbus, OH.” Source: RevenueBase Database · checked Sep 20, 2026
4	Olson Kundig	Partial evidence	Seattle, WA, United StatesHQ checked Sep 20, 2026	201-500	365 contacts →
	Partial evidence “Now in its sixth decade of practice, Olson Kundig is a collaborative design practice led by 13 principal/owners whose work includes cultural and museum projects, exhibition…” Source: RevenueBase Database · checked Sep 20, 2026
5	Mithun	Partial evidence	Seattle, WA, United StatesHQ checked Sep 20, 2026	51-200	287 contacts →
	Partial evidence “Mithun is an integrated design firm dedicated to creating positive change in people’s lives.” Source: RevenueBase Database · checked Sep 20, 2026
6	LMN Architects	Strong evidence	Seattle, WA, United StatesHQ checked Sep 20, 2026	51-200	170 contacts →
	Strong evidence “About LMN Architects Seattle-based LMN Architects specializes in the planning and design of significant public and private facilities, including convention centers, cultural arts…” Source: RevenueBase Database · checked Sep 20, 2026
7	Gglo Design	Partial evidence	Seattle, WA, United StatesHQ checked Sep 20, 2026	11-50	115 contacts →
	Partial evidence “GGLO is an integrated design firm that provides architecture, urban design, planning, research, interior design, and landscape architecture to clients around the world.” Source: RevenueBase Database · checked Sep 20, 2026
8	Hewitt	Partial evidence	Seattle, WA, United StatesHQ checked Sep 20, 2026	51-200	111 contacts →
	Partial evidence “HEWITT is an integrated practice of architects, landscape architects and urban designers, committed to creating value for clients and community - meaningful places that connect…” Source: RevenueBase Database · checked Sep 20, 2026
9	The Miller Hull Partnership, LLP	Partial evidence	Seattle, WA, United StatesHQ checked Sep 20, 2026	51-200	104 contacts →
	Partial evidence “The Miller Hull Partnership is an architecture and planning firm rooted in environmentally-responsible designs that create a regenerative and inclusive future.” Source: RevenueBase Database · checked Sep 20, 2026
10	Mahlum	Indirect evidence	Seattle, WA, United StatesHQ checked Sep 20, 2026	51-200	98 contacts →
	Indirect evidence “As a community of practice, Mahlum makes places that promote healing, wellness, learning and more.” Source: RevenueBase Database · checked Sep 20, 2026
11	KPG	Strong evidence	Seattle, WA, United StatesHQ checked Sep 20, 2026	51-200	66 contacts →
	Strong evidence “KPG was initially formed in 1990 by a team of engineers, architects, landscape architects, and urban designers committed to and focused on community-driven public projects.” Source: RevenueBase Database · checked Sep 20, 2026
12	Weber Thompson	Partial evidence	Seattle, WA, United StatesHQ checked Sep 20, 2026	51-200	62 contacts →
	Partial evidence “Weber Thompson is an award-winning, majority women-owned design firm based in Seattle that offers full-service architecture, interior design, and landscape architecture.” Source: RevenueBase Database · checked Sep 20, 2026
13	Collinswoerman	Partial evidence	Seattle, WA, United StatesHQ checked Sep 20, 2026	51-200	61 contacts →
	Partial evidence “We believe that great design drives extraordinary value.” Source: RevenueBase Database · checked Sep 20, 2026
14	SKB Architects	Indirect evidence	Seattle, WA, United StatesHQ checked Sep 20, 2026	11-50	61 contacts →
	Indirect evidence “Since we’ve been crafting sensory-rich environments that connect people, businesses, and communities in meaningful ways.” Source: RevenueBase Database · checked Sep 20, 2026
15	Porter	Indirect evidence	Seattle, WA, United StatesHQ checked Sep 20, 2026	51-200	59 contacts →
	Indirect evidence “Porter creates places where people want to be.” Source: RevenueBase Database · checked Sep 20, 2026
16	Burgess Design, INC	Strong evidence	Seattle, WA, United StatesHQ checked Sep 20, 2026	11-50	50 contacts →
	Strong evidence “At Burgess Design, our team of designers and architects can help you create a space that makes a statement about who you are as a company while improving efficiencies and…” Source: RevenueBase Database · checked Sep 20, 2026
17	GGN	Partial evidence	Seattle, WA, United StatesHQ checked Sep 20, 2026	11-50	42 contacts →
	Partial evidence “GGN is a landscape architecture, design, and collaborative strategies firm based in Seattle.” Source: RevenueBase Database · checked Sep 20, 2026
18	Board & Vellum	Partial evidence	Seattle, WA, United StatesHQ checked Sep 20, 2026	11-50	37 contacts →
	Partial evidence “Board & Vellum is a multidisciplinary design firm based on Capitol Hill in Seattle, offering architecture, interior design, and landscape architecture for residential, commercial…” Source: RevenueBase Database · checked Sep 20, 2026
19	Graphite Design Group	Partial evidence	Seattle, WA, United StatesHQ checked Sep 20, 2026	11-50	34 contacts →
	Partial evidence “Graphite Design Group is a Seattle-based design firm recognized for crafting people-focused integrated environments that elegantly solve complex problems.” Source: RevenueBase Database · checked Sep 20, 2026
20	HBB Landscape Architecture	Partial evidence	Seattle, WA, United StatesHQ checked Sep 20, 2026	11-50	34 contacts →
	Partial evidence “HBB is a 20 person professional Landscape Architecture, Urban Design, and Planning firm located in Downtown Seattle.” Source: RevenueBase Database · checked Sep 20, 2026
21	Graham Baba Architects	Indirect evidence	Seattle, WA, United StatesHQ checked Sep 20, 2026	11-50	33 contacts →
	Indirect evidence “Graham Baba Architects is a vibrant pacific northwest architecture firm recognized for their successful place-making of commercial, residential, civic and community-oriented…” Source: RevenueBase Database · checked Sep 20, 2026
22	Johnston Architects	Partial evidence	Seattle, WA, United StatesHQ checked Sep 20, 2026	11-50	30 contacts →
	Partial evidence “Johnston Architects was born from a desire to create exceptional architecture through intelligent, conscientious, and sustainable design.” Source: RevenueBase Database · checked Sep 20, 2026
23	MIG SVR	Partial evidence	Seattle, WA, United StatesHQ checked Sep 20, 2026	201-500	29 contacts →
	Partial evidence “SvR Design Company was founded in 1989 with a mission of providing innovation in the built environment.” Source: RevenueBase Database · checked Sep 20, 2026
24	Weinstein A U	Indirect evidence	Seattle, WA, United StatesHQ checked Sep 20, 2026	11-50	26 contacts →
	Indirect evidence “At Weinstein AU, we look for ways to make our complex world a more balanced, inspirational, and productive place in which to live, work, and participate in civic life.” Source: RevenueBase Database · checked Sep 20, 2026
25	TCA Architecture Planning Design	Partial evidence	Seattle, WA, United StatesHQ checked Sep 20, 2026	11-50	25 contacts →
	Partial evidence “TCA represents a 60+ year evolution of experience providing personalized design services for a wide range of challenging and notable projects.” Source: RevenueBase Database · checked Sep 20, 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: public space design 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 public space design firms.
Partial evidence: Its own public description names part of public space design firms, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name public space design 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 170 public space design firms based in Seattle, United States

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Public space design firms based in Seattle, United States at a glance

As of Sep 20, 2026

54.9%Verified-email coverage

26.5Average contacts per company

1-10Median size (employees)

403.5%Largest-city concentration · New York

Sep 20, 2026Page data refreshed

Companies by employee count

1-10

109

11-50

51-200

201-500

501-1,000

Email recency for this list is measured across the whole United States list rather than for Seattle, so it is reported there. Company counts and contact totals on this page are exact for Seattle, over 170 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 public space design 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 Seattle, United States whose own description of what they do matches “public space design 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 public space design 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 public space design firms, and records with no verified work email. Companies headquartered outside Seattle 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, 2,470 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 20, 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.

Public space design 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 public space design 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 public space design firms are there based in Seattle, United States?

RevenueBase identified 170 public space design firms headquartered in Seattle, 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?

Nbbj Design, headquartered in Seattle, tops this list with the largest team on record.

Which city has the most public space design firms?

New York leads with 686 headquartered companies, followed by Los Angeles (267) and San Francisco (187).

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 2,470 verified decision-maker contacts tracked across these 170 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 20, 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.