Company lists · Data refreshed October 2026

Top 25 Construction materials engineering firms based in Seattle, United States

Name: Construction materials engineering firms based in Seattle, United States
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Oct 10, 2026 39 companies tracked

RevenueBase identified 39 company matches for construction materials engineering firms associated with Seattle, United States as of October 2026 and tracks 2,458 professional contacts across them, including 1,695 with verified work emails. Across the United States, New York is the largest hub for this category (166 companies); Seattle has 39.

This list covers company matches for construction materials engineering firms associated with Seattle, United States, found by RevenueBase SmartSearch using the meaning of business descriptions in its company graph at Exact. Ranked by professionals tracked, largest first. Rows show recorded descriptions where available, Exact search membership and the snapshot date. Data refreshed October 10, 2026.

Published by RevenueBase, a B2B data infrastructure company. This list was built with RevenueBase SmartSearch, 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 RevenueBase SmartSearch · Exact Recorded Oct 10, 2026 How this list was built

39Companies

2,458Contacts tracked

1,695Verified emails

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The 25 largest construction materials engineering firms based in Seattle, United States

Ranked by team size

Top 25 of 39 company matches for construction materials engineering firms based in Seattle, United States, ordered by professional contacts tracked in RevenueBase, largest first. Recorded Oct 10, 2026. The RevenueBase SmartSearch column shows Exact match membership in this saved search. Click a contact count to view that company's people. Totals use company locations recorded by RevenueBase; the displayed preview is a smaller selection.
#	Company	RevenueBase SmartSearch	Headquarters	Employees	Contacts
1	Coffman Engineers	Exact match	Seattle, WA, United StatesHQ recorded Oct 10, 2026	501-1,000	889 contacts →
	Exact match “The right team is more than an advantage.” Recorded in the RevenueBase company graph · Oct 10, 2026 · View company records in RevenueBase
2	DCI Engineers	Exact match	Seattle, WA, United StatesHQ recorded Oct 10, 2026	201-500	420 contacts →
	Exact match “DCI Engineers has been providing client-focused structural and civil engineering services for over three decades.” Recorded in the RevenueBase company graph · Oct 10, 2026 · View company records in RevenueBase
3	Delve Underground	Exact match	Seattle, WA, United StatesHQ recorded Oct 10, 2026	201-500	307 contacts →
	Exact match “Delve Underground is a leader in heavy civil engineering, serving the transportation, water, wastewater, and energy industries.” Recorded in the RevenueBase company graph · Oct 10, 2026 · View company records in RevenueBase
4	Magnusson Klemencic Associates	Exact match	Seattle, WA, United StatesHQ recorded Oct 10, 2026	51-200	196 contacts →
	Exact match “We engineer the future of the built environment, one structure, skyline, and community at a time.” Recorded in the RevenueBase company graph · Oct 10, 2026 · View company records in RevenueBase
5	Harris Group	Exact match	Seattle, WA, United StatesHQ recorded Oct 10, 2026	51-200	189 contacts →
	Exact match “Harris Group is a multidiscipline engineering consulting firm with offices located throughout the United States.” Recorded in the RevenueBase company graph · Oct 10, 2026 · View company records in RevenueBase
6	BHC Consultants	Exact match	Seattle, WA, United StatesHQ recorded Oct 10, 2026	51-200	108 contacts →
	Exact match “BHC Consultants, LLC (BHC) is an employee owned and managed consulting, engineering, building code and construction compliance, and planning firm with offices in Seattle and…” Recorded in the RevenueBase company graph · Oct 10, 2026 · View company records in RevenueBase
7	ABKJ	Exact match	Seattle, WA, United StatesHQ recorded Oct 10, 2026	11-50	67 contacts →
	Exact match “Andersen Bjornstad Kane Jacobs (ABKJ) is a premier consulting design firm in the United States.” Recorded in the RevenueBase company graph · Oct 10, 2026 · View company records in RevenueBase
8	Swenson SAY Faget	Exact match	Seattle, WA, United StatesHQ recorded Oct 10, 2026	51-200	46 contacts →
	Exact match “At Swenson Say Faget, our team of structural engineers is committed to finding the right design solutions.” Recorded in the RevenueBase company graph · Oct 10, 2026 · View company records in RevenueBase
9	Malsam Tsang Structural Engineering	Exact match	Seattle, WA, United StatesHQ recorded Oct 10, 2026	11-50	27 contacts →
	Exact match “MALSAM TSANG STRUCTURAL ENGINEERING is a group of engineers and drafters known for our honesty, reliability and steadfast work ethic.” Recorded in the RevenueBase company graph · Oct 10, 2026 · View company records in RevenueBase
10	Quantum Consulting Engineers	Exact match	Seattle, WA, United StatesHQ recorded Oct 10, 2026	11-50	22 contacts →
	Exact match “Quantum Consulting Engineers offers structural engineering services for new and existing buildings, including new construction, tenant improvements, renovation, and historic…” Recorded in the RevenueBase company graph · Oct 10, 2026 · View company records in RevenueBase
11	Atlas Design Group, Inc. MBE DBE	Exact match	Seattle, WA, United StatesHQ recorded Oct 10, 2026	1-10	19 contacts →
	Exact match “OUR FIRM Founded in 2019, Atlas Design Group Inc.” Recorded in the RevenueBase company graph · Oct 10, 2026 · View company records in RevenueBase
12	Integrated Design Engineers	Exact match	Seattle, WA, United StatesHQ recorded Oct 10, 2026	11-50	19 contacts →
	Exact match “Integrated Design Engineers (idE) is a Seattle-based structural engineering consulting firm founded in 2005.” Recorded in the RevenueBase company graph · Oct 10, 2026 · View company records in RevenueBase
13	LPD Engineering Pllc	Exact match	Seattle, WA, United StatesHQ recorded Oct 10, 2026	11-50	18 contacts →
	Exact match “Improving our communities through economical, functional and sustainable civil design solutions.” Recorded in the RevenueBase company graph · Oct 10, 2026 · View company records in RevenueBase
14	Pangeo, INC	Exact match	Seattle, WA, United StatesHQ recorded Oct 10, 2026	11-50	16 contacts →
	Exact match Recorded description not available. Recorded in the RevenueBase company graph · Oct 10, 2026 · View company records in RevenueBase
15	Pacific Engineering Technologies, INC	Exact match	Seattle, WA, United StatesHQ recorded Oct 10, 2026	11-50	15 contacts →
	Exact match Recorded description not available. Recorded in the RevenueBase company graph · Oct 10, 2026 · View company records in RevenueBase
16	Jacobson Consulting Engineers	Exact match	Seattle, WA, United StatesHQ recorded Oct 10, 2026	11-50	14 contacts →
	Exact match “Your trusted partners, delivering innovative solutions and expert civil site development.” Recorded in the RevenueBase company graph · Oct 10, 2026 · View company records in RevenueBase
17	Building Envelope Technology & Research	Exact match	Seattle, WA, United StatesHQ recorded Oct 10, 2026	11-50	12 contacts →
	Exact match “Building Envelope Technology & Research (BET & R) is a professional roofing, waterproofing, and cladding consulting firm specializing in building envelope design for new and…” Recorded in the RevenueBase company graph · Oct 10, 2026 · View company records in RevenueBase
18	KE AD Building Consultants Kent Engineering Architectural Diagnostics	Exact match	Seattle, WA, United StatesHQ recorded Oct 10, 2026	11-50	10 contacts →
	Exact match “KE\|AD (Kent Engineering \| Architectural Diagnostics) has office's in both Seattle and Hawaii.” Recorded in the RevenueBase company graph · Oct 10, 2026 · View company records in RevenueBase
19	RHC Engineering	Exact match	Seattle, WA, United StatesHQ recorded Oct 10, 2026	11-50	8 contacts →
	Exact match “RHC Engineering is specialized in bridge and structural design.” Recorded in the RevenueBase company graph · Oct 10, 2026 · View company records in RevenueBase
20	MLA Engineering LLC	Exact match	Seattle, WA, United StatesHQ recorded Oct 10, 2026	11-50	7 contacts →
	Exact match “MLA serves a variety of local, national and international projects.” Recorded in the RevenueBase company graph · Oct 10, 2026 · View company records in RevenueBase
21	CM Design Group	Exact match	Seattle, WA, United StatesHQ recorded Oct 10, 2026	1-10	6 contacts →
	Exact match “CM Design Group, LLC is a Seattle based civil engineering design firm established in 2011.” Recorded in the RevenueBase company graph · Oct 10, 2026 · View company records in RevenueBase
22	Harriott Valentine Engineers	Exact match	Seattle, WA, United StatesHQ recorded Oct 10, 2026	11-50	5 contacts →
	Exact match “Harriott Valentine Engineers is a team of professional engineers committed to providing creative solutions to architectural and construction challenges.” Recorded in the RevenueBase company graph · Oct 10, 2026 · View company records in RevenueBase
23	NKH Engineering	Exact match	Seattle, WA, United StatesHQ recorded Oct 10, 2026	1-10	4 contacts →
	Exact match “NKH Engineering provides structural engineering for residential design and a variety of other small project types, including: New home construction Remodels and additions Site…” Recorded in the RevenueBase company graph · Oct 10, 2026 · View company records in RevenueBase
24	Rainier Stormwater Engineering	Exact match	Seattle, United StatesHQ recorded Oct 10, 2026	1-10	4 contacts →
	Exact match “Civil engineering services for residential and commercial clients.” Recorded in the RevenueBase company graph · Oct 10, 2026 · View company records in RevenueBase
25	Saris Design LAB	Exact match	Seattle, United StatesHQ recorded Oct 10, 2026	1-10	2 contacts →
	Exact match “Saris pioneered the building materials export trade developing markets in Korea, Japan, Taiwan and Argentina while serving other worldwide markets in both commercial and…” Recorded in the RevenueBase company graph · Oct 10, 2026 · View company records in RevenueBase

RevenueBase SmartSearch

Describe a niche business in your own words. RevenueBase SmartSearch compares the meaning of your description with company business descriptions compiled in the RevenueBase company graph. Exact, Similar, Related and Broad control how closely companies must fit.

This list uses Exact for “construction materials engineering firms”. Each Exact match badge shows membership in that saved search; it is not an individual similarity score or a service-quality rating. Recorded descriptions are shown where available.

Showing 25 of 39 construction materials engineering firms based in Seattle, United States

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Construction materials engineering firms based in Seattle, United States at a glance

As of Oct 10, 2026

69.0%Verified-email coverage

63.0Average contacts per company

11-50Median size (employees)

Oct 10, 2026Page data refreshed

Companies by employee count

1-10

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 39 companies.

How this list was built

The recorded descriptions help you assess these company matches. Check a company’s website for its current services and locations.

Source: The RevenueBase company graph: 60 million companies and 398.9 million professional contacts resolved from primary sources, queried with RevenueBase SmartSearch, the natural-language company search available to every RevenueBase user.
What qualifies: Company records associated with Seattle, United States whose business descriptions match “construction materials engineering firms” by meaning at the Exact setting. Descriptions are compiled in the RevenueBase company graph from public websites, profiles and company information where available; they are not guaranteed quotations from the company's website.
RevenueBase SmartSearch: Describe a niche company in your own words to find businesses by meaning. Exact, Similar, Related and Broad control the breadth of RevenueBase SmartSearch. This saved list uses Exact. Each row's Exact match badge shows inclusion in that search, not an individual score or a service-quality judgment.
Public preview: The public preview omits records without a verified work email. Where headquarters information is recorded, preview rows are also filtered to this page’s location. Dataset totals and geographic summaries describe the full matched records before these preview filters.
Match quality: RevenueBase's August 25, 2026 study assessed 4,198 description/company pairs across matching settings. The publisher reports 86% good or better at Exact. This evaluates the method across queries; it does not audit this individual list. Recorded company descriptions, where available, help you judge each match yourself. Read the full methodology: how the lists are built and what the study measures.
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 displayed company carries at least one verified work email. RevenueBase tracks 1,695 professional contacts with verified work emails across the full matched dataset. 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 October 10, 2026. Lists refresh periodically as the graph is re-checked.
Record context: Company records and descriptions can change. Check the company's website for its current services and locations.

Construction materials engineering firms by metro in the United States

Frequently asked

What is RevenueBase SmartSearch?

RevenueBase SmartSearch finds niche companies by the meaning of their business descriptions in the RevenueBase company graph. Exact, Similar, Related and Broad control how closely companies must fit your description. This list uses Exact for “construction materials engineering firms”; each Exact match badge shows search membership, not an individual similarity or quality score.

How many construction materials engineering firms are there based in Seattle, United States?

RevenueBase identified 39 company matches for construction materials engineering firms associated with Seattle, United States as of October 2026, using the meaning of business descriptions at Exact. This is the recorded matched set in the RevenueBase company graph.

What is the largest company on this list?

Coffman Engineers tops the displayed preview by professional contacts tracked in RevenueBase. Recorded headquarters appear in the company rows.

Which city in the United States has the most construction materials engineering firms?

New York leads the United States with 166 company records, followed by Houston (153) and Miami (83). Seattle has 39.

How do I get contact information for these companies?

A free RevenueBase account lets you run this exact search and work limited free results with 500 credits to start. Upgrading provides access to the 1,695 professional contacts with verified work emails tracked across these 39 companies; direct dials are available where recorded.

How current is this list?

The list refreshes periodically as the company graph is re-checked. This page's figures were pulled on October 10, 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 SmartSearch, 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.