Company lists · Data refreshed October 2026

Top 25 Energy efficient building design firms worldwide

Name: Energy efficient building design firms worldwide
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Oct 12, 2026 19,206 companies tracked

RevenueBase identified 19,206 company matches for energy efficient building design firms worldwide as of October 2026 and tracks 149,943 professional contacts across them, including 50,198 with verified work emails. The United States is the largest market and London the largest hub.

This list covers company matches for energy efficient building design firms worldwide, 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 October 12, 2026. Country and city lists for energy efficient building design firms follow the table.

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 Oct 12, 2026 How this list was built

19,206Companies

149,943Contacts tracked

50,198Verified emails

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The 25 largest energy efficient building design firms worldwide

Ranked by team size

Top 25 of 19,206 company matches for energy efficient building design firms worldwide, ordered by professional contacts tracked in RevenueBase, largest first. Recorded Oct 12, 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	Mckinstry	Exact match	Seattle, WA, United StatesHQ recorded Oct 12, 2026	1,001-5,000	2,293 contacts →
	Exact match “We're a national construction and energy services company dedicated to innovating the waste and climate harm out of the built environment.” Recorded in the RevenueBase company graph · Oct 12, 2026 · View company records in RevenueBase
2	IMEG	Exact match	Rock Island, IL, United StatesHQ recorded Oct 12, 2026	1,001-5,000	2,064 contacts →
	Exact match “Leaders in Engineering and Innovation.” Recorded in the RevenueBase company graph · Oct 12, 2026 · View company records in RevenueBase
3	DLR Group	Exact match	30 Offices, MN, United StatesHQ recorded Oct 12, 2026	1,001-5,000	2,039 contacts →
	Exact match “DLR Group is an integrated design firm delivering architecture, engineering, interiors, planning, and building optimization for new construction, renovation, and adaptive reuse.” Recorded in the RevenueBase company graph · Oct 12, 2026 · View company records in RevenueBase
4	OLA	Exact match	Austin, TX, United StatesHQ recorded Oct 12, 2026	n/a	1,150 contacts →
	Exact match “OLA Sustainability, LLC OLA Sustainability is a consulting firm that focuses on integrating sustainable practices into commercial and multifamily design projects.” Recorded in the RevenueBase company graph · Oct 12, 2026 · View company records in RevenueBase
5	KPF	Exact match	New York, NY, United StatesHQ recorded Oct 12, 2026	501-1,000	1,058 contacts →
	Exact match “KPF is dedicated to transforming cities through impactful design, collaborating closely with the world’s most forward-thinking clients to create high performing, carefully crafted…” Recorded in the RevenueBase company graph · Oct 12, 2026 · View company records in RevenueBase
6	ARE OY	Exact match	Vantaa, FinlandHQ recorded Oct 12, 2026	1,001-5,000	896 contacts →
	Exact match “Dedicated to engineering a better life for your building.” Recorded in the RevenueBase company graph · Oct 12, 2026 · View company records in RevenueBase
7	Syska Hennessy Group	Exact match	New York, United StatesHQ recorded Oct 12, 2026	501-1,000	835 contacts →
	Exact match “Consult Engineer Commission At Syska Hennessy Group, we create exceptional environments.” Recorded in the RevenueBase company graph · Oct 12, 2026 · View company records in RevenueBase
8	PAE	Exact match	Portland, OR, United StatesHQ recorded Oct 12, 2026	201-500	835 contacts →
	Exact match “PAE provides mechanical and electrical engineering design, technology system design, energy modeling and analysis, and more.” Recorded in the RevenueBase company graph · Oct 12, 2026 · View company records in RevenueBase
9	ZGF Architects	Exact match	Portland, OR, United StatesHQ recorded Oct 12, 2026	501-1,000	827 contacts →
	Exact match “With our origins in Oregon, attention to craft and beauty is elemental to the ZGF culture.” Recorded in the RevenueBase company graph · Oct 12, 2026 · View company records in RevenueBase
10	Introba	Exact match	St. Louis, MO, United StatesHQ recorded Oct 12, 2026	1,001-5,000	816 contacts →
	Exact match “Introba is one of the world’s largest building engineering and consulting firms with more than employees in offices across the United States, Canada, the United Kingdom, Serbia…” Recorded in the RevenueBase company graph · Oct 12, 2026 · View company records in RevenueBase
11	Vanderweil Engineers	Exact match	Boston, MA, United StatesHQ recorded Oct 12, 2026	201-500	562 contacts →
	Exact match “Vanderweil is a mechanical, electrical, plumbing, fire protection, technology, sustainability, commissioning, and power engineering firm dedicated to providing customized and…” Recorded in the RevenueBase company graph · Oct 12, 2026 · View company records in RevenueBase
12	Little Diversified Architectural Consulting	Exact match	Little Global, VA, United StatesHQ recorded Oct 12, 2026	201-500	524 contacts →
	Exact match “At Little, we deliver results far beyond architecture-results you wouldn’t expect from an architectural firm.” Recorded in the RevenueBase company graph · Oct 12, 2026 · View company records in RevenueBase
13	Sitelogiq	Exact match	Minneapolis, MN, United StatesHQ recorded Oct 12, 2026	501-1,000	491 contacts →
	Exact match “SitelogIQ provides design, engineering, and construction management services that help organizations nationwide modernize their facilities and infrastructure.” Recorded in the RevenueBase company graph · Oct 12, 2026 · View company records in RevenueBase
14	Tengbom	Exact match	Stockholm, SwedenHQ recorded Oct 12, 2026	201-500	443 contacts →
	Exact match “Tengbom är ett av Nordens ledande arkitektföretag.” Recorded in the RevenueBase company graph · Oct 12, 2026 · View company records in RevenueBase
15	AESG	Exact match	London, United Arab EmiratesHQ recorded Oct 12, 2026	201-500	418 contacts →
	Exact match “AESG is an international Consultancy, Engineering and Advisory firm committed to driving sustainability in the built environment and beyond.” Recorded in the RevenueBase company graph · Oct 12, 2026 · View company records in RevenueBase
16	Arcxis	Exact match	Houston, TX, United StatesHQ recorded Oct 12, 2026	501-1,000	392 contacts →
	Exact match “ARCXIS (Formerly DPIS Builder Services), is the largest provider of HERS inspections, ENERGY STAR ratings, engineering and design, construction quality assurance and other builder…” Recorded in the RevenueBase company graph · Oct 12, 2026 · View company records in RevenueBase
17	Estudio Architecture	Exact match	Houston, TX, United StatesHQ recorded Oct 12, 2026	n/a	391 contacts →
	Exact match “eStudio is a specialized full service architectural and boutique design firm.” Recorded in the RevenueBase company graph · Oct 12, 2026 · View company records in RevenueBase
18	Glumac	Exact match	San Francisco, CA, United StatesHQ recorded Oct 12, 2026	201-500	386 contacts →
	Exact match “Glumac, a Tetra Tech Company, is a global leader in building engineering, committed to delivering a low carbon future for all.” Recorded in the RevenueBase company graph · Oct 12, 2026 · View company records in RevenueBase
19	IES LTD	Exact match	Glasgow, United KingdomHQ recorded Oct 12, 2026	201-500	385 contacts →
	Exact match “IES is an innovative company at the forefront of the development and application of powerful software simulation tools and consulting services for architects, engineers and others…” Recorded in the RevenueBase company graph · Oct 12, 2026 · View company records in RevenueBase
20	P2s	Exact match	Long Beach, CA, United StatesHQ recorded Oct 12, 2026	201-500	381 contacts →
	Exact match “P2S has brought forward-thinking, sustainable engineering solutions to California, the Pacific Northwest, and beyond, for over 30 years.” Recorded in the RevenueBase company graph · Oct 12, 2026 · View company records in RevenueBase
21	Wendel Companies	Exact match	Williamsville, NY, United StatesHQ recorded Oct 12, 2026	201-500	367 contacts →
	Exact match “Wendel is an Architecture, Engineering, Energy Efficiency, and Construction Management Firm that delivers customized solutions and turnkey projects in innovative ways.” Recorded in the RevenueBase company graph · Oct 12, 2026 · View company records in RevenueBase
22	Edifice Consultants Pvt. LTD	Exact match	Mumbai, IndiaHQ recorded Oct 12, 2026	201-500	353 contacts →
	Exact match “Edifice Consultants Pvt.” Recorded in the RevenueBase company graph · Oct 12, 2026 · View company records in RevenueBase
23	Performance Services	Exact match	Indianapolis, IN, United StatesHQ recorded Oct 12, 2026	201-500	339 contacts →
	Exact match “We design and construct high-performing buildings and systems.” Recorded in the RevenueBase company graph · Oct 12, 2026 · View company records in RevenueBase
24	MBH Architects	Exact match	Alameda, CA, United StatesHQ recorded Oct 12, 2026	201-500	338 contacts →
	Exact match “MBH Architects is a full-service architectural firm headquartered in a LEED Gold office in the San Francisco Bay Area with offices in New York City, Denver, Mumbai, and Bengaluru.” Recorded in the RevenueBase company graph · Oct 12, 2026 · View company records in RevenueBase
25	RDH Building Science	Exact match	Burnaby, BC, CanadaHQ recorded Oct 12, 2026	201-500	336 contacts →
	Exact match “RDH is a multidisciplinary consulting firm specializing in building performance, durability, and resilience.” Recorded in the RevenueBase company graph · Oct 12, 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 “energy efficient building design 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 19,206 energy efficient building design firms worldwide

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Energy efficient building design firms worldwide at a glance

As of Oct 12, 2026

33.5%Verified-email coverage

7.8Average contacts per company

1-10Median size (employees)

1.3%Largest-city concentration · London

Oct 12, 2026Page data refreshed

Companies by employee count

1-10

13,434

11-50

4,663

51-200

774

201-500

142

501-1,000

1,001-5,000

5,001-10,000

10001+

Email recency is reported on each country list linked below.

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.
Coverage: Every country. Country and city lists for energy efficient building design firms are linked below.
What qualifies: Company records worldwide whose business descriptions match “energy efficient building design 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. 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 50,198 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 October 12, 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.

Energy efficient building design firms by location

91 lists · largest first

Every Energy efficient building design firms list RevenueBase publishes, by country and city. Counts are matching companies in each list as of its own refresh date.

Countries

Cities

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 “energy efficient building design firms”; each Exact match badge shows search membership, not an individual similarity or quality score.

How many energy efficient building design firms are there worldwide?

RevenueBase identified 19,206 company matches for energy efficient building design firms worldwide as of October 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?

Mckinstry tops the displayed preview by professional contacts tracked in RevenueBase. Recorded headquarters appear in the company rows.

Which country has the most energy efficient building design firms?

The United States leads with 3,761 companies, followed by Germany (1,469) and India (1,102). Every energy efficient building design firms list by country and city is linked on this page.

Which city has the most energy efficient building design firms?

London leads with 244 company records, followed by New York (180) and Paris (152).

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 50,198 professional contacts with verified work emails tracked across these 19,206 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 October 12, 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.