Company lists · Data refreshed September 2026

Top 25 Leed certified building contractors based in Seattle, United States

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

Compiled by the RevenueBase Data Team Data refreshed Sep 17, 2026 44 companies tracked

RevenueBase identified 44 leed certified building contractors headquartered in Seattle, United States as of September 2026 and tracks 3,259 professional contacts across them, including 2,215 with verified work emails. New York is the largest hub.

This list covers leed certified building contractors 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 17, 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 17, 2026 86% judged on-target in blind review

44Companies

3,259Contacts tracked

2,215Verified emails

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The 25 largest leed certified building contractors based in Seattle, United States

Ranked by team size

Top 25 of 44 leed certified building contractors based in Seattle, United States, ranked by team size, largest first. Data refreshed Sep 17, 2026. RevenueBase Smart Search rates how each company's information relates to leed certified building contractors: 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	Mckinstry	Indirect evidence	Seattle, WA, United StatesHQ checked Sep 17, 2026	1,001-5,000	2,213 contacts →
	Indirect evidence “We're a national construction and energy services company dedicated to innovating the waste and climate harm out of the built environment.” Source: RevenueBase Database · checked Sep 17, 2026
2	Sellen Construction	Indirect evidence	Seattle, WA, United StatesHQ checked Sep 17, 2026	501-1,000	470 contacts →
	Indirect evidence “Sellen Construction is a locally owned and operated commercial builder.” Source: RevenueBase Database · checked Sep 17, 2026
3	Säzän Group INC	Indirect evidence	Seattle, WA, United StatesHQ checked Sep 17, 2026	51-200	151 contacts →
	Indirect evidence “Säzän Group is an engineering and consulting firm with offices in Washington, Oregon, and Arizona.” Source: RevenueBase Database · checked Sep 17, 2026
4	Cascadia Consulting Group	Indirect evidence	Seattle, WA, United StatesHQ checked Sep 17, 2026	51-200	110 contacts →
	Indirect evidence “Cascadia Consulting Group is a majority women-owned consulting firm specializing in environmental and sustainability solutions.” Source: RevenueBase Database · checked Sep 17, 2026
5	Krekow Jennings INC	Indirect evidence	Seattle, WA, United StatesHQ checked Sep 17, 2026	51-200	61 contacts →
	Indirect evidence “Krekow Jennings is a diverse and uniquely talented team of builders primarily dedicated to crafting highly custom, architecturally significant residences.” Source: RevenueBase Database · checked Sep 17, 2026
6	Solterra	Partial evidence	Seattle, WA, United StatesHQ checked Sep 17, 2026	11-50	40 contacts →
	Partial evidence “Solterra creates some of the most sustainable, livable, and innovative buildings in the Pacific Northwest.” Source: RevenueBase Database · checked Sep 17, 2026
7	Ecotope, INC	Partial evidence	Seattle, WA, United StatesHQ checked Sep 17, 2026	11-50	30 contacts →
	Partial evidence “Ecotope has provided sustainable building design consulting and engineering services in the Pacific Northwest for over 40 years.” Source: RevenueBase Database · checked Sep 17, 2026
8	4ea Building Science	Partial evidence	Seattle, WA, United StatesHQ checked Sep 17, 2026	11-50	22 contacts →
	Partial 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 17, 2026
9	Delta E Consulting	Indirect evidence	Seattle, WA, United StatesHQ checked Sep 17, 2026	11-50	22 contacts →
	Indirect evidence “At Delta E, we specialize in a diverse range of consulting services, including Sustainability, Carbon consulting, Energy services, and design expertise in Mechanical, Electrical…” Source: RevenueBase Database · checked Sep 17, 2026
10	O'brien360	Partial evidence	Seattle, WA, United StatesHQ checked Sep 17, 2026	11-50	21 contacts →
	Partial evidence “O'Brien360 is a nationally recognized leader in the sustainable building community.” Source: RevenueBase Database · checked Sep 17, 2026
11	Mwworks	Indirect evidence	Seattle, WA, United StatesHQ checked Sep 17, 2026	1-10	13 contacts →
	Indirect evidence “mwworks llc is a Seattle based design studio offering architectural and interior design services to residential and commercial clients.” Source: RevenueBase Database · checked Sep 17, 2026
12	Tfwb Engineers INC	Indirect evidence	Seattle, WA, United StatesHQ checked Sep 17, 2026	11-50	7 contacts →
	Indirect evidence “TFWB Engineers formerly Travis, Fitzmaurice & Associates is an electrical, telecommunications, and security design consulting firm.” Source: RevenueBase Database · checked Sep 17, 2026
13	Heartwood Builders INC	Indirect evidence	Seattle, WA, United StatesHQ checked Sep 17, 2026	1-10	7 contacts →
	Indirect evidence “Heartwood Builders, owned by Scott Engler, is a custom home and commercial builder.” Source: RevenueBase Database · checked Sep 17, 2026
14	Archecology	Strong evidence	Seattle, WA, United StatesHQ checked Sep 17, 2026	1-10	5 contacts →
	Strong evidence “We help our partners and project teams understand complex sustainability strategies, evaluate the tradeoffs, and achieve their green building certification goals to produce…” Source: RevenueBase Database · checked Sep 17, 2026
15	Strata Architects	Indirect evidence	Seattle, WA, United StatesHQ checked Sep 17, 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 17, 2026
16	CES Consulting LLC	Indirect evidence	Seattle, WA, United StatesHQ checked Sep 17, 2026	1-10	4 contacts →
	Indirect 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 17, 2026
17	Strouse Davis Architecture	Indirect evidence	Seattle, WA, United StatesHQ checked Sep 17, 2026	1-10	4 contacts →
	Indirect 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 17, 2026
18	Multi-M Contracting	Indirect evidence	Seattle, WA, United StatesHQ checked Sep 17, 2026	1-10	4 contacts →
	Indirect evidence “Multi-M is a full service commercial and residential construction company serving the Greater Puget Sound region in Washington state.” Source: RevenueBase Database · checked Sep 17, 2026
19	Buddha Builders	Indirect evidence	Seattle, United StatesHQ checked Sep 17, 2026	1-10	4 contacts →
	Indirect evidence “Our company is comprised of leaders in the industry who will bring your vision to life with the least amount of hassle possible, no matter how big the project.” Source: RevenueBase Database · checked Sep 17, 2026
20	Twist Design INC	Indirect evidence	Seattle, WA, United StatesHQ checked Sep 17, 2026	11-50	3 contacts →
	Indirect evidence “ABOUT TWIST uses experience, curiosity, and innovation to create client focused, sustainable places and spaces.” Source: RevenueBase Database · checked Sep 17, 2026
21	Kruger Architecture	Indirect evidence	Seattle, WA, United StatesHQ checked Sep 17, 2026	1-10	3 contacts →
	Indirect evidence “Kruger Architecture provides architecture and design services that respond to clients' unique needs.” Source: RevenueBase Database · checked Sep 17, 2026
22	Paladino, A Buro Happold Company	Indirect evidence	Seattle, WA, United StatesHQ checked Sep 17, 2026	11-50	2 contacts →
	Indirect evidence “We are pleased to announce that Paladino and Company is now part of and operating as Buro Happold.” Source: RevenueBase Database · checked Sep 17, 2026
23	Avalon Nw, INC	Indirect evidence	Seattle, WA, United StatesHQ checked Sep 17, 2026	11-50	1 contacts →
	Indirect evidence Source: RevenueBase Database · checked Sep 17, 2026
24	Balance Architects Pllc	Indirect evidence	Seattle, WA, United StatesHQ checked Sep 17, 2026	1-10	1 contacts →
	Indirect evidence “Balance Architects is a full service firm offering architectural and energy consulting services.” Source: RevenueBase Database · checked Sep 17, 2026
25	Northwest Workshop	Indirect evidence	Seattle, WA, United StatesHQ checked Sep 17, 2026	1-10	1 contacts →
	Indirect evidence “NORTHWEST WORKSHOP, a construction company based out of Seattle.” Source: RevenueBase Database · checked Sep 17, 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: leed certified building contractors. 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 leed certified building contractors.
Partial evidence: Its own public description names part of leed certified building contractors, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name leed certified building contractors. 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 44 leed certified building contractors based in Seattle, United States

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Leed certified building contractors based in Seattle, United States at a glance

As of Sep 17, 2026

68.0%Verified-email coverage

74.1Average contacts per company

1-10Median size (employees)

411.4%Largest-city concentration · New York

Sep 17, 2026Page data refreshed

Companies by employee count

1-10

11-50

51-200

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 44 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 leed certified building contractors, 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 “leed certified building contractors”. 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 leed certified building contractors), 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 leed certified building contractors, 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, 2,215 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 17, 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.

Leed certified building contractors 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 leed certified building contractors, 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 leed certified building contractors are there based in Seattle, United States?

RevenueBase identified 44 leed certified building contractors 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?

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

Which city has the most leed certified building contractors?

New York leads with 181 headquartered companies, followed by Houston (81) and Los Angeles (74).

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 2,215 verified decision-maker contacts tracked across these 44 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 17, 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.