Company lists · Data refreshed November 2026

Top 22 Infrastructure contractors based in Seattle, United States

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

Compiled by the RevenueBase Data Team Data refreshed Nov 6, 2026 56 companies tracked

RevenueBase identified 56 company matches for infrastructure contractors associated with Seattle, United States as of November 2026 and tracks 1,685 professional contacts across them, including 806 with verified work emails. Across the United States, Houston is the largest hub for this category (437 companies); Seattle has 56.

This list covers company matches for infrastructure contractors 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 November 6, 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 Nov 6, 2026 How this list was built

56Companies

1,685Contacts tracked

806Verified emails

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The 22 largest infrastructure contractors based in Seattle, United States

Ranked by team size

Top 22 of 56 company matches for infrastructure contractors based in Seattle, United States, ordered by professional contacts tracked in RevenueBase, largest first. Recorded Nov 6, 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	JTM Construction	Exact match	Seattle, WA, United StatesHQ recorded Nov 6, 2026	51-200	227 contacts →
	Exact match “JTM Construction was founded with a vision to be positively engaged in building neighborhoods, workplaces, and infrastructure support systems of the Pacific Northwest.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
2	Scarsella Bros., INC	Exact match	Seattle, WA, United StatesHQ recorded Nov 6, 2026	51-200	105 contacts →
	Exact match “Scarsella Brothers is a leading heavy civil contractor in the Pacific Northwest, and has been building their reputation since 1945.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
3	Gray & Osborne	Exact match	Seattle, WA, United StatesHQ recorded Nov 6, 2026	51-200	105 contacts →
	Exact match “Municipal Engineering Services” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
4	Itpipes	Exact match	Seattle, WA, United StatesHQ recorded Nov 6, 2026	51-200	96 contacts →
	Exact match “ITpipes is the leading provider of intelligent pipeline inspection solutions, helping municipalities, utilities, and contractors turn inspection data into actionable insight.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
5	R.W. Beck	Exact match	Seattle, WA, United StatesHQ recorded Nov 6, 2026	501-1,000	85 contacts →
	Exact match “R.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
6	ABKJ	Exact match	Seattle, WA, United StatesHQ recorded Nov 6, 2026	11-50	69 contacts →
	Exact match “Andersen Bjornstad Kane Jacobs (ABKJ) is a premier consulting design firm in the United States.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
7	Pacific West Construction And Maintenance	Exact match	Seattle, WA, United StatesHQ recorded Nov 6, 2026	51-200	24 contacts →
	Exact match “Pacific West is a general contracting firm that preserves, adds value and new purposes to existing structures and new-construction projects.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
8	SCI Infrastructure	Exact match	Seattle, WA, United StatesHQ recorded Nov 6, 2026	51-200	22 contacts →
	Exact match “SCI INFRASTRUCTURE, LLC is an established Heavy Civil, Site Work and Road Construction Contractor with headquarters located in SeaTac Washington.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
9	Modern Construction Services	Exact match	Seattle, WA, United StatesHQ recorded Nov 6, 2026	11-50	21 contacts →
	Exact match “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…” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
10	Primeline Utility Services	Exact match	Seattle, WA, United StatesHQ recorded Nov 6, 2026	1,001-5,000	19 contacts →
	Exact match “PrimeLine Utility Services is a leading provider of construction, maintenance and design solutions for the electric, gas and telecommunication industries.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
11	LPD Engineering Pllc	Exact match	Seattle, WA, United StatesHQ recorded Nov 6, 2026	11-50	18 contacts →
	Exact match “Improving our communities through economical, functional and sustainable civil design solutions.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
12	Hainline	Exact match	Seattle, WA, United StatesHQ recorded Nov 6, 2026	11-50	13 contacts →
	Exact match “HAINLINE was founded in 1981 to assist owners, architects, and contractors in the construction process.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
13	Deeny Construction CO INC	Exact match	Seattle, WA, United StatesHQ recorded Nov 6, 2026	1-10	12 contacts →
	Exact match “Deeny Construction Co Inc is an Utilities company located in 2545 Rainier Ave S, Seattle, Washington, United States.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
14	Ergosync Engineering	Exact match	Seattle, WA, United StatesHQ recorded Nov 6, 2026	11-50	9 contacts →
	Exact match “Ergosync is a full-service electrical and systems engineering company offering design services, project management, construction support, and commissioning services.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
15	Versatile Drilling Contractors, INC	Exact match	Seattle, WA, United StatesHQ recorded Nov 6, 2026	11-50	9 contacts →
	Exact match Recorded description not available. Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
16	CM Design Group	Exact match	Seattle, WA, United StatesHQ recorded Nov 6, 2026	1-10	8 contacts →
	Exact match “CM Design Group, LLC is a Seattle based civil engineering design firm established in 2011.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
17	Spartan Concrete Incorporated	Exact match	Seattle, WA, United StatesHQ recorded Nov 6, 2026	11-50	6 contacts →
	Exact match “Spartan is a full-service structural concrete outfit, specializing in post-tensioned decks, mild-reinforced decks and stormwater detention vaults.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
18	Coterra Engineering, Pllc	Exact match	Seattle, WA, United StatesHQ recorded Nov 6, 2026	1-10	5 contacts →
	Exact match “Located in the Phinney Ridge neighborhood of Seattle, Coterra provides civil engineering services to private organizations and public agencies, offering a range of expertise in…” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
19	Thorco Construction	Exact match	Seattle, WA, United StatesHQ recorded Nov 6, 2026	1-10	3 contacts →
	Exact match Recorded description not available. Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
20	Cadence Builds, LLC	Exact match	Seattle, WA, United StatesHQ recorded Nov 6, 2026	1-10	2 contacts →
	Exact match “Cadence Builds is one of Seattle’s premier general contractors.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
21	Robin Kirschbaum, INC	Exact match	Seattle, WA, United StatesHQ recorded Nov 6, 2026	1-10	1 contacts →
	Exact match “Consulting engineers delivering sustainable, cost-effective water infrastructure projects for public agency and private clients.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
22	Transcon Company LLC	Exact match	Seattle, WA, United StatesHQ recorded Nov 6, 2026	1-10	1 contacts →
	Exact match Recorded description not available. Recorded in the RevenueBase company graph · Nov 6, 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 “infrastructure contractors”. 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 22 of 56 infrastructure contractors based in Seattle, United States

See the full list, filter by size, metro and specialty, and access 806 tracked professional contacts with verified work emails. Direct dials are available where recorded.

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Infrastructure contractors based in Seattle, United States at a glance

As of Nov 6, 2026

47.8%Verified-email coverage

30.1Average contacts per company

11-50Median size (employees)

Nov 6, 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 56 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 “infrastructure contractors” 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 806 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 November 6, 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.

Infrastructure contractors 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 “infrastructure contractors”; each Exact match badge shows search membership, not an individual similarity or quality score.

How many infrastructure contractors are there based in Seattle, United States?

RevenueBase identified 56 company matches for infrastructure contractors associated with Seattle, United States as of November 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?

JTM Construction 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 infrastructure contractors?

Houston leads the United States with 437 company records, followed by New York (210) and Miami (174). Seattle has 56.

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 806 professional contacts with verified work emails tracked across these 56 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 November 6, 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.