Company lists · Data refreshed September 2026

Top 25 Architectural engineers based in Seattle, United States

Name: Architectural engineers based in Seattle, United States
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Sep 30, 2026 35 companies tracked

RevenueBase identified 35 architectural engineers headquartered in Seattle, United States as of September 2026 and tracks 611 professional contacts across them, including 418 with verified work emails. Across the United States, New York is the largest hub for this category (197 companies); Seattle has 35.

This list covers architectural engineers 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 30, 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 30, 2026 86% judged on-target in blind review

35Companies

611Contacts tracked

418Verified emails

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The 25 largest architectural engineers based in Seattle, United States

Ranked by team size

Top 25 of 35 architectural engineers based in Seattle, United States, ranked by team size, largest first. Data refreshed Sep 30, 2026. RevenueBase Smart Search rates how each company's information relates to architectural engineers: 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	Magnusson Klemencic Associates	Partial evidence	Seattle, WA, United StatesHQ checked Sep 30, 2026	51-200	190 contacts →
	Partial evidence “We engineer the future of the built environment, one structure, skyline, and community at a time.” Source: RevenueBase Database · checked Sep 30, 2026
2	Säzän Group INC	Partial evidence	Seattle, WA, United StatesHQ checked Sep 30, 2026	51-200	151 contacts →
	Partial evidence “Säzän Group is an engineering and consulting firm with offices in Washington, Oregon, and Arizona.” Source: RevenueBase Database · checked Sep 30, 2026
3	Swenson SAY Faget	Partial evidence	Seattle, WA, United StatesHQ checked Sep 30, 2026	51-200	42 contacts →
	Partial evidence “At Swenson Say Faget, our team of structural engineers is committed to finding the right design solutions.” Source: RevenueBase Database · checked Sep 30, 2026
4	Malsam Tsang Structural Engineering	Partial evidence	Seattle, WA, United StatesHQ checked Sep 30, 2026	11-50	27 contacts →
	Partial evidence “MALSAM TSANG STRUCTURAL ENGINEERING is a group of engineers and drafters known for our honesty, reliability and steadfast work ethic.” Source: RevenueBase Database · checked Sep 30, 2026
5	WJA Design Collaborative	Strong evidence	Seattle, WA, United StatesHQ checked Sep 30, 2026	11-50	22 contacts →
	Strong evidence “WJA Design Collaborative, established in 1968 as Whiteley Jacobsen Associates, has provided architectural and engineering services to Federal clients and private contractors…” Source: RevenueBase Database · checked Sep 30, 2026
6	4ea Building Science	Indirect evidence	Seattle, WA, United StatesHQ checked Sep 30, 2026	11-50	22 contacts →
	Indirect evidence “4EA Building Science is a full-service design consultancy that specializes in the design, construction, and rehabilitation of building enclosures.” Source: RevenueBase Database · checked Sep 30, 2026
7	Quantum Consulting Engineers	Partial evidence	Seattle, WA, United StatesHQ checked Sep 30, 2026	11-50	22 contacts →
	Partial evidence “Quantum Consulting Engineers offers structural engineering services for new and existing buildings, including new construction, tenant improvements, renovation, and historic…” Source: RevenueBase Database · checked Sep 30, 2026
8	Modern Construction Services	Indirect evidence	Seattle, WA, United StatesHQ checked Sep 30, 2026	11-50	19 contacts →
	Indirect evidence “Modern Construction Services, LLC is a Certified Women’s Business Enterprise (WBE) and Certified Small Contractor and Supplier (SCS) providing services for a broad range of…” Source: RevenueBase Database · checked Sep 30, 2026
9	Pacific Engineering Technologies, INC	Indirect evidence	Seattle, WA, United StatesHQ checked Sep 30, 2026	11-50	17 contacts →
	Indirect evidence Source: RevenueBase Database · checked Sep 30, 2026
10	Integrated Design Engineers	Partial evidence	Seattle, WA, United StatesHQ checked Sep 30, 2026	11-50	16 contacts →
	Partial evidence “Integrated Design Engineers (idE) is a Seattle-based structural engineering consulting firm founded in 2005.” Source: RevenueBase Database · checked Sep 30, 2026
11	Motionspace Architecture Design Pllc	Partial evidence	Seattle, WA, United StatesHQ checked Sep 30, 2026	1-10	9 contacts →
	Partial evidence “Motionspace Architecture + Design PLLC is an Award Winning Seattle Architecture Firm.” Source: RevenueBase Database · checked Sep 30, 2026
12	MLA Engineering LLC	Indirect evidence	Seattle, WA, United StatesHQ checked Sep 30, 2026	11-50	7 contacts →
	Indirect evidence “MLA serves a variety of local, national and international projects.” Source: RevenueBase Database · checked Sep 30, 2026
13	Tfwb Engineers INC	Partial evidence	Seattle, WA, United StatesHQ checked Sep 30, 2026	11-50	7 contacts →
	Partial evidence “TFWB Engineers formerly Travis, Fitzmaurice & Associates is an electrical, telecommunications, and security design consulting firm.” Source: RevenueBase Database · checked Sep 30, 2026
14	Harriott Valentine Engineers	Strong evidence	Seattle, WA, United StatesHQ checked Sep 30, 2026	11-50	6 contacts →
	Strong evidence “Harriott Valentine Engineers is a team of professional engineers committed to providing creative solutions to architectural and construction challenges.” Source: RevenueBase Database · checked Sep 30, 2026
15	Grouparchitect	Partial evidence	Seattle, WA, United StatesHQ checked Sep 30, 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 30, 2026
16	Build LLC	Partial evidence	Seattle, WA, United StatesHQ checked Sep 30, 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 30, 2026
17	Strata Architects	Indirect evidence	Seattle, WA, United StatesHQ checked Sep 30, 2026	1-10	5 contacts →
	Indirect evidence “Strata Architects is a Seattle-based design firm dedicated to creating solutions for our clients that make a lasting impact.” Source: RevenueBase Database · checked Sep 30, 2026
18	Sider Byers Mechanical Electrical Engineers	Partial evidence	Seattle, WA, United StatesHQ checked Sep 30, 2026	11-50	5 contacts →
	Partial evidence “Sider + Byers is a mechanical and electrical engineering company based out of Seattle, WA.” Source: RevenueBase Database · checked Sep 30, 2026
19	CES Consulting LLC	Partial evidence	Seattle, WA, United StatesHQ checked Sep 30, 2026	1-10	4 contacts →
	Partial evidence “We are a team of experienced electrical engineers and consultants, who provide strategic planning and advocacy for our clients around the globe.” Source: RevenueBase Database · checked Sep 30, 2026
20	Strouse Davis Architecture	Partial evidence	Seattle, WA, United StatesHQ checked Sep 30, 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 30, 2026
21	NKH Engineering	Partial evidence	Seattle, WA, United StatesHQ checked Sep 30, 2026	1-10	3 contacts →
	Partial evidence “NKH Engineering provides structural engineering for residential design and a variety of other small project types, including: New home construction Remodels and additions Site…” Source: RevenueBase Database · checked Sep 30, 2026
22	FAC Systems INC	Indirect evidence	Seattle, WA, United StatesHQ checked Sep 30, 2026	1-10	1 contacts →
	Indirect evidence Source: RevenueBase Database · checked Sep 30, 2026
23	Green Facades	Partial evidence	Seattle, WA, United StatesHQ checked Sep 30, 2026	1-10	1 contacts →
	Partial evidence “Green Facades provides facade consulting and engineering services to deliver challenging facades with elegance and efficiency for discerning architects and clients worldwide.” Source: RevenueBase Database · checked Sep 30, 2026
24	Strong Work Structural Engineering, INC	Partial evidence	Seattle, WA, United StatesHQ checked Sep 30, 2026	1-10	1 contacts →
	Partial evidence “Structural Engineering Services for Commercial and Residential Buildings, Houses and related structures.” Source: RevenueBase Database · checked Sep 30, 2026
25	MBB Architecture	Partial evidence	Seattle, WA, United StatesHQ checked Sep 30, 2026	1-10	1 contacts →
	Partial evidence “MBB Architecture is a Seattle-based design firm specializing in professional architectural, planning, estimating, and interior design services for a variety of clients.” Source: RevenueBase Database · checked Sep 30, 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: architectural engineers. 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 architectural engineers.
Partial evidence: Its own public description names part of architectural engineers, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name architectural engineers. 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 35 architectural engineers based in Seattle, United States

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Architectural engineers based in Seattle, United States at a glance

As of Sep 30, 2026

68.4%Verified-email coverage

17.5Average contacts per company

1-10Median size (employees)

Sep 30, 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 35 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 architectural engineers, 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 “architectural engineers”. 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 architectural engineers), 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 architectural engineers, 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, 418 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 30, 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.

Architectural engineers 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 architectural engineers, 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 architectural engineers are there based in Seattle, United States?

RevenueBase identified 35 architectural engineers 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?

Magnusson Klemencic Associates, headquartered in Seattle, tops this list with the largest team on record.

Which city in the United States has the most architectural engineers?

New York leads the United States with 197 headquartered companies, followed by Houston (120) and Chicago (82). Seattle has 35.

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 418 verified decision-maker contacts tracked across these 35 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 30, 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.