Company lists · Data refreshed September 2026

Top 25 Architecture design companies based in Seattle, United States

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

Compiled by the RevenueBase Data Team Data refreshed Sep 6, 2026 204 companies tracked

RevenueBase identified 204 architecture design companies headquartered in Seattle, United States as of September 2026 and tracks 1,924 professional contacts across them, including 878 with verified work emails. New York is the largest hub.

This list covers architecture design companies 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 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

204Companies

1,924Contacts tracked

878Verified emails

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The 25 largest architecture design companies based in Seattle, United States

Ranked by team size

Top 25 of 204 architecture design companies based in Seattle, 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 design 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	LMN Architects	Partial evidence	Seattle, WA, United StatesHQ checked Sep 6, 2026	51-200	170 contacts →
	“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: company website · checked Sep 6, 2026
2	Gglo Design	Strong evidence	Seattle, WA, United StatesHQ checked Sep 6, 2026	11-50	115 contacts →
	“GGLO is an integrated design firm that provides architecture, urban design, planning, research, interior design, and landscape architecture to clients around the world.” Source: company website · checked Sep 6, 2026
3	Hewitt	Partial evidence	Seattle, WA, United StatesHQ checked Sep 6, 2026	51-200	111 contacts →
	“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: company website · checked Sep 6, 2026
4	The Miller Hull Partnership, LLP	Strong evidence	Seattle, WA, United StatesHQ checked Sep 6, 2026	51-200	104 contacts →
	“The Miller Hull Partnership is an architecture and planning firm rooted in environmentally-responsible designs that create a regenerative and inclusive future.” Source: company website · checked Sep 6, 2026
5	Collinswoerman	Partial evidence	Seattle, WA, United StatesHQ checked Sep 6, 2026	51-200	61 contacts →
	“We believe that great design drives extraordinary value.” Source: company website · checked Sep 6, 2026
6	SMR Architects	Partial evidence	Seattle, WA, United StatesHQ checked Sep 6, 2026	11-50	43 contacts →
	“SMR Architects is a full-service architecture firm established in Seattle in 1977 as Stickney & Murphy Architects.” Source: company website · checked Sep 6, 2026
7	Board & Vellum	Strong evidence	Seattle, WA, United StatesHQ checked Sep 6, 2026	11-50	37 contacts →
	“Board & Vellum is a multidisciplinary design firm based on Capitol Hill in Seattle, offering architecture, interior design, and landscape architecture for residential, commercial…” Source: company website · checked Sep 6, 2026
8	Graphite Design Group	Partial evidence	Seattle, WA, United StatesHQ checked Sep 6, 2026	11-50	34 contacts →
	“Graphite Design Group is a Seattle-based design firm recognized for crafting people-focused integrated environments that elegantly solve complex problems.” Source: company website · checked Sep 6, 2026
9	HBB Landscape Architecture	Strong evidence	Seattle, WA, United StatesHQ checked Sep 6, 2026	11-50	34 contacts →
	“HBB is a 20 person professional Landscape Architecture, Urban Design, and Planning firm located in Downtown Seattle.” Source: company website · checked Sep 6, 2026
10	Johnston Architects	Strong evidence	Seattle, WA, United StatesHQ checked Sep 6, 2026	11-50	30 contacts →
	“Johnston Architects was born from a desire to create exceptional architecture through intelligent, conscientious, and sustainable design.” Source: company website · checked Sep 6, 2026
11	Weinstein A U	Indirect evidence	Seattle, WA, United StatesHQ checked Sep 6, 2026	11-50	26 contacts →
	“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: company website · checked Sep 6, 2026
12	TCA Architecture Planning Design	Partial evidence	Seattle, WA, United StatesHQ checked Sep 6, 2026	11-50	25 contacts →
	“TCA represents a 60+ year evolution of experience providing personalized design services for a wide range of challenging and notable projects.” Source: company website · checked Sep 6, 2026
13	Tiscareno	Partial evidence	Seattle, WA, United StatesHQ checked Sep 6, 2026	11-50	25 contacts →
	“Tiscareno is a diverse, mid-size team of architects, designers, project managers, and support staff that designs multifamily, mixed-use, tenant improvement, transportation, and…” Source: company website · checked Sep 6, 2026
14	Jackson Main Architecture, P.S	Strong evidence	Seattle, WA, United StatesHQ checked Sep 6, 2026	11-50	24 contacts →
	“Jackson \| Main Architecture is a full-service architecture and planning firm designing what’s next in the built environment.” Source: company website · checked Sep 6, 2026
15	WJA Design Collaborative	Strong evidence	Seattle, WA, United StatesHQ checked Sep 6, 2026	11-50	22 contacts →
	“WJA Design Collaborative, established in 1968 as Whiteley Jacobsen Associates, has provided architectural and engineering services to Federal clients and private contractors…” Source: company website · checked Sep 6, 2026
16	Johnson Braund, INC	Strong evidence	Seattle, WA, United StatesHQ checked Sep 6, 2026	11-50	21 contacts →
	“Johnson Braund is a full-service architecture firm founded in 1977 that has been designing projects across the nation.” Source: company website · checked Sep 6, 2026
17	Studio Meng Strazzara	Strong evidence	Seattle, WA, United StatesHQ checked Sep 6, 2026	11-50	21 contacts →
	“Founded in 1976, Studio Meng Strazzara is a dynamic and innovative architecture firm that provides diverse designs to a variety of markets.” Source: company website · checked Sep 6, 2026
18	Urbal Architecture	Partial evidence	Seattle, WA, United StatesHQ checked Sep 6, 2026	11-50	20 contacts →
	“Urbal Architecture, PLLC was founded in 2010 and has grown to medium sized, award-winning architecture firm located in Seattle’s Eastlake neighborhood, and Portland.” Source: company website · checked Sep 6, 2026
19	Shks Architects	Partial evidence	Seattle, WA, United StatesHQ checked Sep 6, 2026	11-50	20 contacts →
	“SHKS Architects designs buildings that connect people with place.” Source: company website · checked Sep 6, 2026
20	Lockhart-Suver LLC	Indirect evidence	Seattle, WA, United StatesHQ checked Sep 6, 2026	11-50	18 contacts →
	“LOCKHART-SUVER LLC is a construction company based out of 6201 ROOSEVELT WAY NE, SEATTLE, Washington, United States.” Source: company website · checked Sep 6, 2026
21	Atelier Drome	Strong evidence	Seattle, WA, United StatesHQ checked Sep 6, 2026	11-50	16 contacts →
	“We are a 100% woman-owned, full-service, multi-disciplinary design firm that unites exceptional design with down-to-earth approachability, specializing in architecture, interior…” Source: company website · checked Sep 6, 2026
22	Shed Architecture & Design	Partial evidence	Seattle, WA, United StatesHQ checked Sep 6, 2026	11-50	16 contacts →
	“SHED engages architecture as a practical art.” Source: company website · checked Sep 6, 2026
23	Cast Architecture	Strong evidence	Seattle, WA, United StatesHQ checked Sep 6, 2026	11-50	16 contacts →
	“CAST architecture is a Seattle-based firm with extensive experience designing contemporary spaces throughout the Northwest.” Source: company website · checked Sep 6, 2026
24	Schemata Workshop	Strong evidence	Seattle, WA, United StatesHQ checked Sep 6, 2026	11-50	16 contacts →
	“Schemata Workshop provides full architecture and urban design services on new and renovation projects from concept through construction.” Source: company website · checked Sep 6, 2026
25	Degen & Degen Architecture And Interior Design	Partial evidence	Seattle, WA, United StatesHQ checked Sep 6, 2026	1-10	15 contacts →
	“Since 1994, Degen & Degen has designed distinctive environments for the hospitality industry across North America.” Source: company website · 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 design 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 design companies.
Partial evidence: Its own public description names part of architecture design companies, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name architecture design 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 204 architecture design companies based in Seattle, United States

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Architecture design companies based in Seattle, United States at a glance

As of Sep 6, 2026

45.6%Verified-email coverage

9.4Average contacts per company

1-10Median size (employees)

496.6%Largest-city concentration · New York

Sep 6, 2026Page data refreshed

Companies by employee count

1-10

142

11-50

51-200

501-1,000

1,001-5,000

Email recency for this list is measured across the whole United States list rather than this city, so it is reported there. Company counts and contact totals on this page are exact for Seattle, over 204 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 design 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 Seattle, United States whose own description of what they do matches “architecture design 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 design 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 design companies, 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, 878 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 design companies 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 architecture design companies, 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 architecture design companies are there based in Seattle, United States?

RevenueBase identified 204 architecture design companies 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?

LMN Architects, headquartered in Seattle, tops this list with the largest team on record.

Which city has the most architecture design companies?

New York leads with 1013 headquartered companies, followed by Los Angeles (420) and Chicago (311).

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 878 verified decision-maker contacts tracked across these 204 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 6, 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.