Company lists · Data refreshed September 2026

Top 25 Architecture companies based in Seattle, United States

Name: Architecture 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 482 companies tracked

This directory lists 482 architecture companies based in Seattle, United States, with 8,898 contacts and 4,879 email addresses. Across the United States, New York is the largest hub for this category (2,147 companies); Seattle has 482.

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

482Companies

8,898Contacts tracked

4,879Verified emails

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The 25 largest architecture companies based in Seattle, United States

Ranked by team size

Top 25 of 482 architecture 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 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	Kpff Consulting Engineers	Indirect evidence	Seattle, WA, United StatesHQ checked Sep 6, 2026	1,001-5,000	1,487 contacts →
	Indirect evidence “KPFF is a multi-office, multi-discipline engineering firm.” Source: RevenueBase Database · checked Sep 6, 2026
2	Nbbj Design	Strong evidence	Seattle, WA, United StatesHQ checked Sep 6, 2026	501-1,000	808 contacts →
	Strong 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 6, 2026
3	Mg2 Design	Strong evidence	Seattle, WA, United StatesHQ checked Sep 6, 2026	201-500	520 contacts →
	Strong evidence “MG2 is a global architecture, design, construction & branding studio.” Source: RevenueBase Database · checked Sep 6, 2026
4	DCI Engineers	Indirect evidence	Seattle, WA, United StatesHQ checked Sep 6, 2026	201-500	404 contacts →
	Indirect evidence “DCI Engineers has been providing client-focused structural and civil engineering services for over three decades.” Source: RevenueBase Database · checked Sep 6, 2026
5	Olson Kundig	Indirect evidence	Seattle, WA, United StatesHQ checked Sep 6, 2026	201-500	365 contacts →
	Indirect 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 6, 2026
6	Abbott Construction	Indirect evidence	Seattle, WA, United StatesHQ checked Sep 6, 2026	201-500	327 contacts →
	Indirect evidence “Founded in 1983, Abbott Construction is a progressive West Coast construction group known for its superior management and field team, best-in-class standards and craftsmanship.” Source: RevenueBase Database · checked Sep 6, 2026
7	Mithun	Indirect evidence	Seattle, WA, United StatesHQ checked Sep 6, 2026	51-200	287 contacts →
	Indirect evidence “Mithun is an integrated design firm dedicated to creating positive change in people’s lives.” Source: RevenueBase Database · checked Sep 6, 2026
8	Magnusson Klemencic Associates	Indirect evidence	Seattle, WA, United StatesHQ checked Sep 6, 2026	51-200	190 contacts →
	Indirect evidence “We engineer the future of the built environment, one structure, skyline, and community at a time.” Source: RevenueBase Database · checked Sep 6, 2026
9	Harris Group	Indirect evidence	Seattle, WA, United StatesHQ checked Sep 6, 2026	51-200	178 contacts →
	Indirect evidence “Harris Group is a multidiscipline engineering consulting firm with offices located throughout the United States.” Source: RevenueBase Database · checked Sep 6, 2026
10	LMN Architects	Indirect evidence	Seattle, WA, United StatesHQ checked Sep 6, 2026	51-200	170 contacts →
	Indirect 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 6, 2026
11	Säzän Group INC	Indirect evidence	Seattle, WA, United StatesHQ checked Sep 6, 2026	51-200	151 contacts →
	Indirect evidence “Säzän Group is an engineering and consulting firm with offices in Washington, Oregon, and Arizona.” Source: RevenueBase Database · checked Sep 6, 2026
12	Gglo Design	Strong evidence	Seattle, WA, United StatesHQ checked Sep 6, 2026	11-50	115 contacts →
	Strong 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 6, 2026
13	Hewitt	Indirect evidence	Seattle, WA, United StatesHQ checked Sep 6, 2026	51-200	111 contacts →
	Indirect 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 6, 2026
14	The Miller Hull Partnership, LLP	Strong evidence	Seattle, WA, United StatesHQ checked Sep 6, 2026	51-200	104 contacts →
	Strong 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 6, 2026
15	Bassetti Architects, A Design Studio Of HMC Architects	Indirect evidence	Seattle, WA, United StatesHQ checked Sep 6, 2026	51-200	65 contacts →
	Indirect evidence “Since 1947, Bassetti Architects has designed many well-loved and long-lived buildings in Seattle and the Pacific Northwest.” Source: RevenueBase Database · checked Sep 6, 2026
16	ABKJ	Indirect evidence	Seattle, WA, United StatesHQ checked Sep 6, 2026	11-50	65 contacts →
	Indirect evidence “Andersen Bjornstad Kane Jacobs (ABKJ) is a premier consulting design firm in the United States.” Source: RevenueBase Database · checked Sep 6, 2026
17	Weber Thompson	Strong evidence	Seattle, WA, United StatesHQ checked Sep 6, 2026	51-200	62 contacts →
	Strong 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 6, 2026
18	Krekow Jennings INC	Strong evidence	Seattle, WA, United StatesHQ checked Sep 6, 2026	51-200	61 contacts →
	Strong evidence “Krekow Jennings is a diverse and uniquely talented team of builders primarily dedicated to crafting highly custom, architecturally significant residences.” Source: RevenueBase Database · checked Sep 6, 2026
19	Collinswoerman	Indirect evidence	Seattle, WA, United StatesHQ checked Sep 6, 2026	51-200	61 contacts →
	Indirect evidence “We believe that great design drives extraordinary value.” Source: RevenueBase Database · checked Sep 6, 2026
20	SKB Architects	Indirect evidence	Seattle, WA, United StatesHQ checked Sep 6, 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 6, 2026
21	SMR Architects	Strong evidence	Seattle, WA, United StatesHQ checked Sep 6, 2026	11-50	43 contacts →
	Strong evidence “SMR Architects is a full-service architecture firm established in Seattle in 1977 as Stickney & Murphy Architects.” Source: RevenueBase Database · checked Sep 6, 2026
22	Swenson SAY Faget	Indirect evidence	Seattle, WA, United StatesHQ checked Sep 6, 2026	51-200	42 contacts →
	Indirect evidence “At Swenson Say Faget, our team of structural engineers is committed to finding the right design solutions.” Source: RevenueBase Database · checked Sep 6, 2026
23	GGN	Strong evidence	Seattle, WA, United StatesHQ checked Sep 6, 2026	11-50	42 contacts →
	Strong evidence “GGN is a landscape architecture, design, and collaborative strategies firm based in Seattle.” Source: RevenueBase Database · checked Sep 6, 2026
24	Dovetail General Contractors	Indirect evidence	Seattle, WA, United StatesHQ checked Sep 6, 2026	51-200	40 contacts →
	Indirect evidence “Dovetail is a custom builder whose purpose is to elevate craft and craftspeople.” Source: RevenueBase Database · checked Sep 6, 2026
25	Board & Vellum	Strong evidence	Seattle, WA, United StatesHQ checked Sep 6, 2026	11-50	37 contacts →
	Strong 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 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 482 architecture companies based in Seattle, United States

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Architecture companies based in Seattle, United States at a glance

As of Sep 6, 2026

54.8%Verified-email coverage

18.5Average contacts per company

1-10Median size (employees)

Sep 6, 2026Page data refreshed

Companies by employee count

1-10

342

11-50

111

51-200

201-500

501-1,000

1,001-5,000

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 482 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 Seattle, 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 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, 4,879 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 Seattle, United States?

RevenueBase counts 482 architecture companies listed based in Seattle, United States. The directory also includes 8,898 contacts and 4,879 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). Seattle has 482.

Where can I find contacts at architecture companies?

This directory includes 8,898 contacts and 4,879 email addresses for architecture companies based in Seattle, 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.