Company lists · Data refreshed September 2026

Top 25 Low emission construction firms based in Portland, United States

Name: Low emission construction firms based in Portland, United States
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Sep 17, 2026 55 companies tracked

RevenueBase identified 55 low emission construction firms headquartered in Portland, United States as of September 2026 and tracks 1,157 professional contacts across them, including 423 with verified work emails. New York is the largest hub.

This list covers low emission construction firms headquartered in Portland, 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

55Companies

1,157Contacts tracked

423Verified emails

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The 25 largest low emission construction firms based in Portland, United States

Ranked by team size

Top 25 of 55 low emission construction firms based in Portland, United States, ranked by team size, largest first. Data refreshed Sep 17, 2026. RevenueBase Smart Search rates how each company's information relates to low emission construction firms: 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	Walsh Construction CO	Indirect evidence	Portland, OR, United StatesHQ checked Sep 17, 2026	201-500	604 contacts →
	Indirect evidence “Made in the Pacific Northwest.” Source: RevenueBase Database · checked Sep 17, 2026
2	GBD Architects	Indirect evidence	Portland, OR, United StatesHQ checked Sep 17, 2026	51-200	113 contacts →
	Indirect evidence “WE MAKE BUILDINGS THAT WORK HARD.” Source: RevenueBase Database · checked Sep 17, 2026
3	P&c Construction	Partial evidence	Portland, OR, United StatesHQ checked Sep 17, 2026	51-200	69 contacts →
	Partial evidence “P&C Construction was established in 1961 and is currently celebrating its 60th anniversary as a general contractor locally owned and operated in Portland, Oregon.” Source: RevenueBase Database · checked Sep 17, 2026
4	Brightworks Sustainability	Indirect evidence	Portland, OR, United StatesHQ checked Sep 17, 2026	51-200	61 contacts →
	Indirect evidence “Recognized for advanced subject matter expertise, wide-ranging technical resources, creative problem-solving, and excellence in professional practice, Brightworks Sustainability…” Source: RevenueBase Database · checked Sep 17, 2026
5	Lever Architecture	Indirect evidence	Portland, OR, United StatesHQ checked Sep 17, 2026	11-50	36 contacts →
	Indirect evidence “LEVER Architecture, based in Portland, Oregon, and Los Angeles, California, is at the forefront of design excellence and material innovation.” Source: RevenueBase Database · checked Sep 17, 2026
6	RDF Builders CO	Indirect evidence	Portland, OR, United StatesHQ checked Sep 17, 2026	51-200	31 contacts →
	Indirect evidence “RDF Builders brings a unique approach to building in the Northwest.” Source: RevenueBase Database · checked Sep 17, 2026
7	Owen Gabbert, LLC	Partial evidence	Portland, OR, United StatesHQ checked Sep 17, 2026	11-50	27 contacts →
	Partial evidence “OG LLC is a full-service real estate development and construction company with a creative and community-oriented focus.” Source: RevenueBase Database · checked Sep 17, 2026
8	Hammer & Hand	Indirect evidence	Portland, OR, United StatesHQ checked Sep 17, 2026	51-200	26 contacts →
	Indirect evidence “We are a general contractor with over 30+ years of experience building high-craft residential and commercial projects in the Portland, Oregon and Seattle, Washington areas.” Source: RevenueBase Database · checked Sep 17, 2026
9	Clark Kjos Architects	Indirect evidence	Portland, OR, United StatesHQ checked Sep 17, 2026	11-50	25 contacts →
	Indirect evidence “CKA is a unique group of professionals highly focused on architecture for health (with a wide range of project types), healthy environments, sustainable design practices…” Source: RevenueBase Database · checked Sep 17, 2026
10	Kaplan Thompson Architects	Indirect evidence	Portland, ME, United StatesHQ checked Sep 17, 2026	11-50	18 contacts →
	Indirect evidence “Beauty.” Source: RevenueBase Database · checked Sep 17, 2026
11	Brightbuilt	Indirect evidence	Portland, ME, United StatesHQ checked Sep 17, 2026	1-10	12 contacts →
	Indirect evidence “A Brighter Path to Your Forever Home \| Design Firm based in Portland, Maine.” Source: RevenueBase Database · checked Sep 17, 2026
12	JRA Green Building	Indirect evidence	Portland, OR, United StatesHQ checked Sep 17, 2026	11-50	9 contacts →
	Indirect evidence “JRA Green Building is a family owned company based in Portland, Oregon.” Source: RevenueBase Database · checked Sep 17, 2026
13	Octopus Restoration And Remodeling LLC	Partial evidence	Portland, OR, United StatesHQ checked Sep 17, 2026	1-10	8 contacts →
	Partial evidence “At OPM, we are committed to delivering high-quality Advisory and construction services that exceed our clients' expectations.” Source: RevenueBase Database · checked Sep 17, 2026
14	DON Tankersley & CO	Indirect evidence	Portland, OR, United StatesHQ checked Sep 17, 2026	11-50	7 contacts →
	Indirect evidence Source: RevenueBase Database · checked Sep 17, 2026
15	Birdsmouth Design-Build	Indirect evidence	Portland, OR, United StatesHQ checked Sep 17, 2026	11-50	7 contacts →
	Indirect evidence “A recognized leader in high-performance building and design, Birdsmouth creates zero-energy buildings that are healthier, more comfortable, and more resilient than the industry…” Source: RevenueBase Database · checked Sep 17, 2026
16	Woofter Bolch Architecture	Indirect evidence	Portland, OR, United StatesHQ checked Sep 17, 2026	1-10	6 contacts →
	Indirect evidence “Based in Portland, Oregon, Woofter Bolch Architecture is a collaborative design practice equally committed to providing excellent design and outstanding client service.” Source: RevenueBase Database · checked Sep 17, 2026
17	Emerick Architects	Indirect evidence	Portland, OR, United StatesHQ checked Sep 17, 2026	11-50	6 contacts →
	Indirect evidence “Emerick Architects is a Portland-based commercial and residential architecture firm founded in by principals Melody and Brian Emerick.” Source: RevenueBase Database · checked Sep 17, 2026
18	Harka Architecture, LLC	Indirect evidence	Portland, OR, United StatesHQ checked Sep 17, 2026	1-10	6 contacts →
	Indirect evidence “Harka was founded with an inquisitive spirit and lofty objective: to create beautiful and inspiring spaces that possess the lowest carbon footprint possible while empowering their…” Source: RevenueBase Database · checked Sep 17, 2026
19	Briburn	Indirect evidence	Portland, ME, United StatesHQ checked Sep 17, 2026	1-10	5 contacts →
	Indirect evidence “BRIBURN is committed to creating innovative, energy efficient, and environmentally sound solutions, for residential, commercial, institutional, and civic projects, that artfully…” Source: RevenueBase Database · checked Sep 17, 2026
20	MCA Architects, PC	Indirect evidence	Portland, OR, United StatesHQ checked Sep 17, 2026	11-50	5 contacts →
	Indirect evidence “Since its establishment in 1974, MCA Architects has earned a reputation for consistent delivery of outstanding design, on time and within budget.” Source: RevenueBase Database · checked Sep 17, 2026
21	Northwest Energy Collaborative	Partial evidence	Portland, OR, United StatesHQ checked Sep 17, 2026	1-10	4 contacts →
	Partial evidence “Northwest Energy Collaborative is a Green Building Consulting Firm that applies high performance building improvement methods and extensive construction knowledge to help…” Source: RevenueBase Database · checked Sep 17, 2026
22	B&g Builders	Partial evidence	Portland, United StatesHQ checked Sep 17, 2026	1-10	4 contacts →
	Partial evidence “ABOUT US: With over 30 years of combined experience and a passion for sustainable construction, Carrington Barrs and Gabe Genauer left their corporate construction positions to…” Source: RevenueBase Database · checked Sep 17, 2026
23	Environs, LLC	Indirect evidence	Portland, United StatesHQ checked Sep 17, 2026	1-10	4 contacts →
	Indirect evidence “environs is a comprehensive sustainable design/ build firm serving homeowners in portland, oregon.” Source: RevenueBase Database · checked Sep 17, 2026
24	Project Pivot	Indirect evidence	Portland, OR, United StatesHQ checked Sep 17, 2026	1-10	4 contacts →
	Indirect evidence “Project Pivot is a women-owned, sustainability consulting firm in Portland, Oregon.” Source: RevenueBase Database · checked Sep 17, 2026
25	Hodaie Engineering INC	Indirect evidence	Portland, OR, United StatesHQ checked Sep 17, 2026	1-10	4 contacts →
	Indirect evidence “Hodaie Engineering was established in with a simple, yet effective strategy: to let our work speak for itself.” 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: low emission construction firms. 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 low emission construction firms.
Partial evidence: Its own public description names part of low emission construction firms, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name low emission construction firms. 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 55 low emission construction firms based in Portland, United States

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Low emission construction firms based in Portland, United States at a glance

As of Sep 17, 2026

36.6%Verified-email coverage

21.0Average contacts per company

1-10Median size (employees)

227.3%Largest-city concentration · New York

Sep 17, 2026Page data refreshed

Companies by employee count

1-10

11-50

51-200

201-500

Email recency for this list is measured across the whole United States list rather than for Portland, so it is reported there. Company counts and contact totals on this page are exact for Portland, over 55 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 low emission construction firms, 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 Portland, United States whose own description of what they do matches “low emission construction firms”. 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 low emission construction firms), 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 low emission construction firms, and records with no verified work email. Companies headquartered outside Portland 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, 423 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.

Low emission construction firms 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 low emission construction firms, 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 low emission construction firms are there based in Portland, United States?

RevenueBase identified 55 low emission construction firms headquartered in Portland, 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?

Walsh Construction CO, headquartered in Portland, tops this list with the largest team on record.

Which city has the most low emission construction firms?

New York leads with 125 headquartered companies, followed by Los Angeles (57) and Portland (55).

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 423 verified decision-maker contacts tracked across these 55 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.