Company lists · Data refreshed September 2026

Top 25 Heritage architecture firms based in Seattle, United States

Name: Heritage architecture 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 16, 2026 53 companies tracked

RevenueBase identified 53 heritage architecture firms headquartered in Seattle, United States as of September 2026 and tracks 428 professional contacts across them, including 250 with verified work emails. New York is the largest hub.

This list covers heritage architecture 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 16, 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 16, 2026 86% judged on-target in blind review

53Companies

428Contacts tracked

250Verified emails

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The 25 largest heritage architecture firms based in Seattle, United States

Ranked by team size

Top 25 of 53 heritage architecture firms based in Seattle, United States, ranked by team size, largest first. Data refreshed Sep 16, 2026. RevenueBase Smart Search rates how each company's information relates to heritage 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	LMN Architects	Indirect evidence	Seattle, WA, United StatesHQ checked Sep 16, 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 16, 2026
2	TCA Architecture Planning Design	Indirect evidence	Seattle, WA, United StatesHQ checked Sep 16, 2026	11-50	25 contacts →
	Indirect 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 16, 2026
3	Urbal Architecture	Partial evidence	Seattle, WA, United StatesHQ checked Sep 16, 2026	11-50	20 contacts →
	Partial evidence “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: RevenueBase Database · checked Sep 16, 2026
4	Shks Architects	Indirect evidence	Seattle, WA, United StatesHQ checked Sep 16, 2026	11-50	20 contacts →
	Indirect evidence “SHKS Architects designs buildings that connect people with place.” Source: RevenueBase Database · checked Sep 16, 2026
5	Buildingwork	Partial evidence	Seattle, WA, United StatesHQ checked Sep 16, 2026	1-10	17 contacts →
	Partial evidence “BuildingWork is a Seattle-based architecture firm that designs projects and places with a deep respect for craft, context, and detail.” Source: RevenueBase Database · checked Sep 16, 2026
6	Cast Architecture	Partial evidence	Seattle, WA, United StatesHQ checked Sep 16, 2026	11-50	16 contacts →
	Partial evidence “CAST architecture is a Seattle-based firm with extensive experience designing contemporary spaces throughout the Northwest.” Source: RevenueBase Database · checked Sep 16, 2026
7	Motionspace Architecture Design Pllc	Partial evidence	Seattle, WA, United StatesHQ checked Sep 16, 2026	1-10	9 contacts →
	Partial evidence “Motionspace Architecture + Design PLLC is an Award Winning Seattle Architecture Firm.” Source: RevenueBase Database · checked Sep 16, 2026
8	Deforest Architects Pllc	Indirect evidence	Seattle, WA, United StatesHQ checked Sep 16, 2026	11-50	8 contacts →
	Indirect evidence “DeForest Architects brings people, building, and ideas together with an inventive spirit.” Source: RevenueBase Database · checked Sep 16, 2026
9	Weaver Architects P.S., INC	Indirect evidence	Seattle, WA, United StatesHQ checked Sep 16, 2026	1-10	8 contacts →
	Indirect evidence “With the knowledge that good design is not an economic question, but a manifestation of our core principles of creativity, innovation and client service, Weaver Architects was…” Source: RevenueBase Database · checked Sep 16, 2026
10	ECH Architecture	Partial evidence	Seattle, WA, United StatesHQ checked Sep 16, 2026	1-10	8 contacts →
	Partial evidence “ECH Architecture is a mid-sized, full-service firm with expertise in building design, remodeling, planning, and interior design.” Source: RevenueBase Database · checked Sep 16, 2026
11	Garret Cord Werner Architects & Interior Designers	Partial evidence	Seattle, WA, United StatesHQ checked Sep 16, 2026	11-50	7 contacts →
	Partial evidence “Garret Cord Werner Design is a Boutique Architecture and Design Firm.” Source: RevenueBase Database · checked Sep 16, 2026
12	Conard Romano Architects	Partial evidence	Seattle, WA, United StatesHQ checked Sep 16, 2026	1-10	7 contacts →
	Partial evidence “Conard Romano Architects has distinguished itself for excellence in architectural design since 2002.” Source: RevenueBase Database · checked Sep 16, 2026
13	Grouparchitect	Partial evidence	Seattle, WA, United StatesHQ checked Sep 16, 2026	1-10	6 contacts →
	Partial evidence “Grouparchitect designs concise architectural solutions for all sizes of residential, multifamily, and mixed-use/commercial projects.” Source: RevenueBase Database · checked Sep 16, 2026
14	First Lamp Architects	Partial evidence	Seattle, WA, United StatesHQ checked Sep 16, 2026	1-10	6 contacts →
	Partial evidence “First Lamp began in 2009 with the goal of becoming a full-service architecture and construction firm.” Source: RevenueBase Database · checked Sep 16, 2026
15	Build LLC	Partial evidence	Seattle, WA, United StatesHQ checked Sep 16, 2026	1-10	6 contacts →
	Partial evidence “BUILD is a multi-disciplinary architectural design firm with a diverse portfolio of work that demonstrates elegance, integrity and simplification of the complex.” Source: RevenueBase Database · checked Sep 16, 2026
16	Studio TJP Architects And Modern Preservationists	Partial evidence	Seattle, WA, United StatesHQ checked Sep 16, 2026	1-10	5 contacts →
	Partial evidence “Architects and modern preservationists, Studio TJP is committed to architecture as a craft, designing custom, timeless, and enduring built environments through a lens of…” Source: RevenueBase Database · checked Sep 16, 2026
17	Studio19 Architects	Partial evidence	Seattle, WA, United StatesHQ checked Sep 16, 2026	11-50	5 contacts →
	Partial evidence “Provides a full range of architectural, interior design and master planning services.” Source: RevenueBase Database · checked Sep 16, 2026
18	Upward Architecture & Interiors	Partial evidence	Seattle, WA, United StatesHQ checked Sep 16, 2026	1-10	4 contacts →
	Partial evidence “Founded by architect Mark Ward, UPWARD Architecture & Interiors is a small, Seattle-based collaborative of creative problem solvers who contribute design, business acumen and…” Source: RevenueBase Database · checked Sep 16, 2026
19	Ecco Design Inc. Architects	Indirect evidence	Seattle, WA, United StatesHQ checked Sep 16, 2026	1-10	4 contacts →
	Indirect evidence “Seattle architects specializing in new homes, remodels, multifamily, small commercial projects, and shoreline permitting work.” Source: RevenueBase Database · checked Sep 16, 2026
20	Hinge Studio LLC	Indirect evidence	Seattle, WA, United StatesHQ checked Sep 16, 2026	1-10	4 contacts →
	Indirect evidence “We still do a large majority of our work on existing buildings.” Source: RevenueBase Database · checked Sep 16, 2026
21	Strouse Davis Architecture	Partial evidence	Seattle, WA, United StatesHQ checked Sep 16, 2026	1-10	4 contacts →
	Partial evidence “We are a Seattle-based full-service Architecture firm which means we can assist with your project every step of the way; from conception – before a property has even been…” Source: RevenueBase Database · checked Sep 16, 2026
22	RON Wright & Associates Architects	Indirect evidence	Seattle, WA, United StatesHQ checked Sep 16, 2026	1-10	3 contacts →
	Indirect evidence “Ron Wright & Associates/Architects, P.S.” Source: RevenueBase Database · checked Sep 16, 2026
23	Janof Architecture	Indirect evidence	Seattle, WA, United StatesHQ checked Sep 16, 2026	1-10	3 contacts →
	Indirect evidence “The spaces you inhabit should feel wonderful to you.” Source: RevenueBase Database · checked Sep 16, 2026
24	Mcnelis Architects	Indirect evidence	Seattle, WA, United StatesHQ checked Sep 16, 2026	1-10	3 contacts →
	Indirect evidence “McNelis Architects is a boutique firm that welcomes the opportunity to design a range of project types.” Source: RevenueBase Database · checked Sep 16, 2026
25	Kruger Architecture	Partial evidence	Seattle, WA, United StatesHQ checked Sep 16, 2026	1-10	3 contacts →
	Partial evidence “Kruger Architecture provides architecture and design services that respond to clients' unique needs.” Source: RevenueBase Database · checked Sep 16, 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: heritage 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 heritage architecture firms.
Partial evidence: Its own public description names part of heritage architecture firms, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name heritage 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 heritage architecture firms based in Seattle, United States

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Heritage architecture firms based in Seattle, United States at a glance

As of Sep 16, 2026

58.4%Verified-email coverage

8.1Average contacts per company

1-10Median size (employees)

556.6%Largest-city concentration · New York

Sep 16, 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 Seattle, so it is reported there. Company counts and contact totals on this page are exact for Seattle, 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 heritage 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 Seattle, United States whose own description of what they do matches “heritage 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 heritage 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 heritage architecture 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, 250 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 16, 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.

Heritage 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 heritage 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 heritage architecture firms are there based in Seattle, United States?

RevenueBase identified 53 heritage architecture 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?

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

Which city has the most heritage architecture firms?

New York leads with 295 headquartered companies, followed by Los Angeles (85) and Chicago (63).

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 250 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 16, 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.