Company lists · Data refreshed September 2026

Top 25 Carbon neutral contractors based in Washington, United States

Name: Carbon neutral contractors based in Washington, United States
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Sep 16, 2026 65 companies tracked

RevenueBase identified 65 carbon neutral contractors headquartered in Washington, United States as of September 2026 and tracks 968 professional contacts across them, including 468 with verified work emails. New York is the largest hub.

This list covers carbon neutral contractors headquartered in Washington, 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 16, 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 16, 2026 86% judged on-target in blind review

65Companies

968Contacts tracked

468Verified emails

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The 25 largest carbon neutral contractors based in Washington, United States

Ranked by team size

Top 25 of 65 carbon neutral contractors based in Washington, United States, ranked by team size, largest first. Data refreshed Sep 16, 2026. RevenueBase Smart Search rates how each company's information relates to carbon neutral 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	Setty & Associates	Indirect evidence	Washington, DC, United StatesHQ checked Sep 16, 2026	201-500	220 contacts →
	Indirect evidence “Established in 1984, SETTY is headquartered in Fairfax, VA, with offices in Atlanta, GA, Baltimore, MD, Charlottesville, VA, Fairfax, VA, Los Angeles, CA, New York, NY…” Source: RevenueBase Database · checked Sep 16, 2026
2	MCN Build	Indirect evidence	Washington, DC, United StatesHQ checked Sep 16, 2026	51-200	183 contacts →
	Indirect evidence “MCN Build is a purpose driven construction company with the vision of building facilities that matter―to clients, to the community, and to the environment.” Source: RevenueBase Database · checked Sep 16, 2026
3	Shalom Baranes Associates	Indirect evidence	Washington, DC, United StatesHQ checked Sep 16, 2026	51-200	84 contacts →
	Indirect evidence “Shalom Baranes Associates (SBA) is a Washington, DC architectural firm with an acclaimed reputation for its expertise in residential, commercial, institutional, and governmental…” Source: RevenueBase Database · checked Sep 16, 2026
4	Peer Consultants, P.C	Indirect evidence	Washington, DC, United StatesHQ checked Sep 16, 2026	51-200	71 contacts →
	Indirect evidence “In 1978, PEER was established under Dr.” Source: RevenueBase Database · checked Sep 16, 2026
5	Baumann Consulting	Strong evidence	Washington, DC, United StatesHQ checked Sep 16, 2026	51-200	63 contacts →
	Strong evidence “Baumann Consulting is driven to deliver solutions for a carbon-neutral real estate industry.” Source: RevenueBase Database · checked Sep 16, 2026
6	David M. Schwarz Architects	Indirect evidence	Washington, DC, United StatesHQ checked Sep 16, 2026	11-50	40 contacts →
	Indirect evidence “David M.” Source: RevenueBase Database · checked Sep 16, 2026
7	Northbridge	Indirect evidence	Washington, United StatesHQ checked Sep 16, 2026	11-50	24 contacts →
	Indirect evidence “At Northbridge, we provide our clients with the tools and expertise to help solve complex financial, policy, and environmental challenges.” Source: RevenueBase Database · checked Sep 16, 2026
8	North Arrow, INC	Indirect evidence	Washington, DC, United StatesHQ checked Sep 16, 2026	11-50	22 contacts →
	Indirect evidence “DUNS Number: 08-001-8268 CAGE Code: 7GN69 SBA Certified Small Business District of Columbia Certified Business Enterprise (CBE) Metropolitan Washington Airports Authority Local…” Source: RevenueBase Database · checked Sep 16, 2026
9	Fillat Architecture	Indirect evidence	Washington, DC, United StatesHQ checked Sep 16, 2026	11-50	20 contacts →
	Indirect evidence “FILLAT+ is a design studio headquartered in Washington, DC with offices in Baltimore, New York and San Diego.” Source: RevenueBase Database · checked Sep 16, 2026
10	Interagency INC	Indirect evidence	Washington, DC, United StatesHQ checked Sep 16, 2026	11-50	19 contacts →
	Indirect evidence “InterAgency provides preconstruction consulting for the Washington Metro Area’s most complex and challenging infrastructure projects.” Source: RevenueBase Database · checked Sep 16, 2026
11	Amis Patel Brewer	Indirect evidence	Washington, DC, United StatesHQ checked Sep 16, 2026	1-10	18 contacts →
	Indirect evidence “Amis, Patel & Brewer, LLP is a boutique law firm focused on providing legal services to the renewable energy and sustainability sectors.” Source: RevenueBase Database · checked Sep 16, 2026
12	Bell Architects, PC	Indirect evidence	Washington, DC, United StatesHQ checked Sep 16, 2026	11-50	16 contacts →
	Indirect evidence “BELL Architects' works closely with communities to create places where people want to be.” Source: RevenueBase Database · checked Sep 16, 2026
13	Co2efficient	Indirect evidence	Washington, DC, United StatesHQ checked Sep 16, 2026	1-10	14 contacts →
	Indirect evidence “CO2EFFICIENT LLC (COEFFICIENT) was founded in 2017 as a mission-focused Washington, D.C.” Source: RevenueBase Database · checked Sep 16, 2026
14	Sustainable YOU	Indirect evidence	Washington, DC, United StatesHQ checked Sep 16, 2026	51-200	14 contacts →
	Indirect evidence “Sustainable You is a national strategic consulting firm in solar and sustainability serving residential and small commercial clients with a focus in the DC, Maryland and Virginia…” Source: RevenueBase Database · checked Sep 16, 2026
15	Greenscape Energy	Indirect evidence	Washington, DC, United StatesHQ checked Sep 16, 2026	11-50	14 contacts →
	Indirect evidence “Greenscape Energy is the fastest-growing green solutions provider in the Region As a group of highly-trained professionals, the Greenscape team stands ready to meet the needs of…” Source: RevenueBase Database · checked Sep 16, 2026
16	Blue Skye Construction And Development, DC	Indirect evidence	Washington, DC, United StatesHQ checked Sep 16, 2026	11-50	12 contacts →
	Indirect evidence “Founded in 2006, Blue Skye Construction, LLC is an award-winning construction and development firm located in Ward 3 in the District of Columbia.” Source: RevenueBase Database · checked Sep 16, 2026
17	Bhi- Construction & Real Estate Development	Indirect evidence	Washington, DC, United StatesHQ checked Sep 16, 2026	11-50	8 contacts →
	Indirect evidence “BHI Construction & Real Estate Development helps owners plan, protect, and deliver complex real estate, capital improvement, and construction projects.” Source: RevenueBase Database · checked Sep 16, 2026
18	SORG	Indirect evidence	Washington, DC, United StatesHQ checked Sep 16, 2026	11-50	7 contacts →
	Indirect evidence “Sorg is a full-service, international design firm offering architectural design services as well as programming, interior design, and construction management that was established…” Source: RevenueBase Database · checked Sep 16, 2026
19	Green Capitol	Indirect evidence	Washington, United StatesHQ checked Sep 16, 2026	1-10	7 contacts →
	Indirect evidence “Green Capitol LLC works on sustainable development policy at the state, federal and international levels, serving clients on agriculture, energy and environment concerns via…” Source: RevenueBase Database · checked Sep 16, 2026
20	Energy Shrink, LLC	Indirect evidence	Washington, DC, United StatesHQ checked Sep 16, 2026	1-10	6 contacts →
	Indirect evidence “Energy Shrink is an environmental consulting practice specialized in sustainability and energy efficiency in buildings, that is, high-performance or green buildings.” Source: RevenueBase Database · checked Sep 16, 2026
21	Adaptive Green	Indirect evidence	Washington, DC, United StatesHQ checked Sep 16, 2026	11-50	4 contacts →
	Indirect evidence “Adaptive Green designs, installs and maintains green building components such as green roofs, solar panels, green walls and sustainable water management systems.” Source: RevenueBase Database · checked Sep 16, 2026
22	Deborah Brosnan & Associates	Indirect evidence	Washington, DC, United StatesHQ checked Sep 16, 2026	1-10	4 contacts →
	Indirect evidence “Leading and innovative company that finding solutions, bridging gaps and driving positive action for clients and the planet.” Source: RevenueBase Database · checked Sep 16, 2026
23	Lightbox Energy	Indirect evidence	Washington, DC, United StatesHQ checked Sep 16, 2026	1-10	4 contacts →
	Indirect evidence “Lightbox Energy is an energy and sustainability program management firm.” Source: RevenueBase Database · checked Sep 16, 2026
24	Taurus Development Group And Taurus Renovation & Construction	Indirect evidence	Washington, DC, United StatesHQ checked Sep 16, 2026	11-50	4 contacts →
	Indirect evidence “A full service Development, Construction and Management Firm Development, Energy Efficiency, Benchmarking, Program Management, Development Consulting, Construction Management…” Source: RevenueBase Database · checked Sep 16, 2026
25	Studio Upwall Architects	Indirect evidence	Washington, DC, United StatesHQ checked Sep 16, 2026	1-10	3 contacts →
	Indirect evidence “Our goal is to create healthy indoor environments that are regenerative and infused with natural daylight and ventilation and are designed to maximize access to outdoor spaces.” Source: RevenueBase Database · checked Sep 16, 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: carbon neutral 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 carbon neutral contractors.
Partial evidence: Its own public description names part of carbon neutral contractors, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name carbon neutral 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 65 carbon neutral contractors based in Washington, United States

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Carbon neutral contractors based in Washington, United States at a glance

As of Sep 16, 2026

48.3%Verified-email coverage

14.9Average contacts per company

1-10Median size (employees)

406.2%Largest-city concentration · New York

Sep 16, 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 Washington, so it is reported there. Company counts and contact totals on this page are exact for Washington, over 65 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 carbon neutral 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 Washington, United States whose own description of what they do matches “carbon neutral 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 carbon neutral 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 carbon neutral contractors, and records with no verified work email. Companies headquartered outside Washington 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, 468 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 16, 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.

Carbon neutral 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 carbon neutral 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 carbon neutral contractors are there based in Washington, United States?

RevenueBase identified 65 carbon neutral contractors headquartered in Washington, 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?

Setty & Associates, headquartered in Washington, tops this list with the largest team on record.

Which city has the most carbon neutral contractors?

New York leads with 264 headquartered companies, followed by Houston (106) and Los Angeles (106).

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 468 verified decision-maker contacts tracked across these 65 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 16, 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.