Company lists · Data refreshed September 2026

Top 25 Civil engineering consulting firms based in Seattle, United States

Name: Civil engineering consulting 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 23, 2026 97 companies tracked

RevenueBase identified 97 company matches for civil engineering consulting firms associated with Seattle, United States as of September 2026 and tracks 6,937 professional contacts across them, including 4,507 with verified work emails. Across the United States, Houston is the largest hub for this category (353 companies); Seattle has 97.

This list covers company matches for civil engineering consulting 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 September 23, 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 Sep 23, 2026 How this list was built

97Companies

6,937Contacts tracked

4,507Verified emails

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The 25 largest civil engineering consulting firms based in Seattle, United States

Ranked by team size

Top 25 of 97 company matches for civil engineering consulting firms based in Seattle, United States, ordered by professional contacts tracked in RevenueBase, largest first. Recorded Sep 23, 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	Kpff Consulting Engineers	Exact match	Seattle, WA, United StatesHQ recorded Sep 23, 2026	1,001-5,000	1,487 contacts →
	Exact match “KPFF is a multi-office, multi-discipline engineering firm.” Recorded in the RevenueBase company graph · Sep 23, 2026 · View company records in RevenueBase
2	Parametrix	Exact match	Seattle, WA, United StatesHQ recorded Sep 23, 2026	501-1,000	880 contacts →
	Exact match “At Parametrix, we help our clients imagine what's possible.” Recorded in the RevenueBase company graph · Sep 23, 2026 · View company records in RevenueBase
3	Coffman Engineers	Exact match	Seattle, WA, United StatesHQ recorded Sep 23, 2026	501-1,000	859 contacts →
	Exact match “The right team is more than an advantage.” Recorded in the RevenueBase company graph · Sep 23, 2026 · View company records in RevenueBase
4	Anchor QEA	Exact match	Seattle, WA, United StatesHQ recorded Sep 23, 2026	501-1,000	479 contacts →
	Exact match “Headquartered in Seattle, Washington, Anchor QEA is a nationally recognized environmental science and engineering consulting firm specializing in aquatic, shoreline, and water…” Recorded in the RevenueBase company graph · Sep 23, 2026 · View company records in RevenueBase
5	DCI Engineers	Exact match	Seattle, WA, United StatesHQ recorded Sep 23, 2026	201-500	404 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 · Sep 23, 2026 · View company records in RevenueBase
6	Delve Underground	Exact match	Seattle, WA, United StatesHQ recorded Sep 23, 2026	201-500	311 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 · Sep 23, 2026 · View company records in RevenueBase
7	Magnusson Klemencic Associates	Exact match	Seattle, WA, United StatesHQ recorded Sep 23, 2026	51-200	190 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 · Sep 23, 2026 · View company records in RevenueBase
8	Hargis Engineers	Exact match	Seattle, WA, United StatesHQ recorded Sep 23, 2026	201-500	188 contacts →
	Exact match “Hargis Engineers is a mechanical, electrical, telecommunications, security, energy consulting engineering, and commissioning firm.” Recorded in the RevenueBase company graph · Sep 23, 2026 · View company records in RevenueBase
9	Harris Group	Exact match	Seattle, WA, United StatesHQ recorded Sep 23, 2026	51-200	178 contacts →
	Exact match “Harris Group is a multidiscipline engineering consulting firm with offices located throughout the United States.” Recorded in the RevenueBase company graph · Sep 23, 2026 · View company records in RevenueBase
10	Herrera Environmental Consultants	Exact match	Seattle, WA, United StatesHQ recorded Sep 23, 2026	51-200	176 contacts →
	Exact match “Herrera Environmental Consultants is a leading engineering and scientific consulting firm focused on restoration, water, and sustainable development.” Recorded in the RevenueBase company graph · Sep 23, 2026 · View company records in RevenueBase
11	Säzän Group INC	Exact match	Seattle, WA, United StatesHQ recorded Sep 23, 2026	51-200	151 contacts →
	Exact match “Säzän Group is an engineering and consulting firm with offices in Washington, Oregon, and Arizona.” Recorded in the RevenueBase company graph · Sep 23, 2026 · View company records in RevenueBase
12	Perteet INC	Exact match	Seattle, WA, United StatesHQ recorded Sep 23, 2026	51-200	126 contacts →
	Exact match Recorded description not available. Recorded in the RevenueBase company graph · Sep 23, 2026 · View company records in RevenueBase
13	BHC Consultants	Exact match	Seattle, WA, United StatesHQ recorded Sep 23, 2026	51-200	109 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 · Sep 23, 2026 · View company records in RevenueBase
14	Gray & Osborne	Exact match	Seattle, WA, United StatesHQ recorded Sep 23, 2026	51-200	99 contacts →
	Exact match “Municipal Engineering Services” Recorded in the RevenueBase company graph · Sep 23, 2026 · View company records in RevenueBase
15	Coughlin Porter Lundeen	Exact match	Seattle, WA, United StatesHQ recorded Sep 23, 2026	51-200	84 contacts →
	Exact match “WHO WE ARE Coughlin Porter Lundeen is a civil and structural engineering firm founded in Seattle with offices in the Pacific and Inland Northwest.” Recorded in the RevenueBase company graph · Sep 23, 2026 · View company records in RevenueBase
16	KPG	Exact match	Seattle, WA, United StatesHQ recorded Sep 23, 2026	51-200	66 contacts →
	Exact match “KPG was initially formed in 1990 by a team of engineers, architects, landscape architects, and urban designers committed to and focused on community-driven public projects.” Recorded in the RevenueBase company graph · Sep 23, 2026 · View company records in RevenueBase
17	ABKJ	Exact match	Seattle, WA, United StatesHQ recorded Sep 23, 2026	11-50	65 contacts →
	Exact match “Andersen Bjornstad Kane Jacobs (ABKJ) is a premier consulting design firm in the United States.” Recorded in the RevenueBase company graph · Sep 23, 2026 · View company records in RevenueBase
18	Hart Crowser, A Division Of Haley & Aldrich	Exact match	Seattle, WA, United StatesHQ recorded Sep 23, 2026	51-200	49 contacts →
	Exact match “Hart Crowser’s engineers and scientists have the up-to-date knowledge to support practical designs and recommendations.” Recorded in the RevenueBase company graph · Sep 23, 2026 · View company records in RevenueBase
19	Floyd Snider	Exact match	Seattle, WA, United StatesHQ recorded Sep 23, 2026	11-50	48 contacts →
	Exact match “Floyd\|Snider is a multi-disciplinary environmental consulting firm providing engineering, strategic project management, and scientific expertise to achieve balanced solutions to…” Recorded in the RevenueBase company graph · Sep 23, 2026 · View company records in RevenueBase
20	Furtado	Exact match	Seattle, WA, United StatesHQ recorded Sep 23, 2026	51-200	46 contacts →
	Exact match “Furtado & Associates, Inc.(Furtado) is a privately held land surveying and construction management consulting firm located in Seattle, Washington.” Recorded in the RevenueBase company graph · Sep 23, 2026 · View company records in RevenueBase
21	Swenson SAY Faget	Exact match	Seattle, WA, United StatesHQ recorded Sep 23, 2026	51-200	42 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 · Sep 23, 2026 · View company records in RevenueBase
22	Soundearth Strategies, INC	Exact match	Seattle, WA, United StatesHQ recorded Sep 23, 2026	11-50	33 contacts →
	Exact match “SoundEarth is a 100% employee-owned environmental consulting firm with more than 40 dedicated and talented professionals working together to improve the environment in which we…” Recorded in the RevenueBase company graph · Sep 23, 2026 · View company records in RevenueBase
23	MIG SVR	Exact match	Seattle, WA, United StatesHQ recorded Sep 23, 2026	201-500	29 contacts →
	Exact match “SvR Design Company was founded in 1989 with a mission of providing innovation in the built environment.” Recorded in the RevenueBase company graph · Sep 23, 2026 · View company records in RevenueBase
24	Malsam Tsang Structural Engineering	Exact match	Seattle, WA, United StatesHQ recorded Sep 23, 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 · Sep 23, 2026 · View company records in RevenueBase
25	WJA Design Collaborative	Exact match	Seattle, WA, United StatesHQ recorded Sep 23, 2026	11-50	22 contacts →
	Exact match “WJA Design Collaborative, established in 1968 as Whiteley Jacobsen Associates, has provided architectural and engineering services to Federal clients and private contractors…” Recorded in the RevenueBase company graph · Sep 23, 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 “civil engineering consulting 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 97 civil engineering consulting firms based in Seattle, United States

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Civil engineering consulting firms based in Seattle, United States at a glance

As of Sep 23, 2026

65.0%Verified-email coverage

71.5Average contacts per company

11-50Median size (employees)

Sep 23, 2026Page data refreshed

Companies by employee count

1-10

11-50

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 97 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 “civil engineering consulting 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 4,507 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 September 23, 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.

Civil engineering consulting 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 “civil engineering consulting firms”; each Exact match badge shows search membership, not an individual similarity or quality score.

How many civil engineering consulting firms are there based in Seattle, United States?

RevenueBase identified 97 company matches for civil engineering consulting firms associated with Seattle, United States as of September 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?

Kpff Consulting 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 civil engineering consulting firms?

Houston leads the United States with 353 company records, followed by New York (331) and Austin (161). Seattle has 97.

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 4,507 professional contacts with verified work emails tracked across these 97 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 September 23, 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.