Company lists · Data refreshed September 2026

Top 25 Master planning firms based in the United States

Name: Master planning firms based in the United States
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Sep 20, 2026 4,294 companies tracked

RevenueBase identified 4,294 master planning firms headquartered in the United States as of September 2026 and tracks 98,658 professional contacts across them, including 50,486 with verified work emails. New York is the largest hub.

This list covers master planning firms headquartered in the 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 20, 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 20, 2026 86% judged on-target in blind review

4,294Companies

98,658Contacts tracked

50,486Verified emails

Explore this list → Free signup · no credit card · 500 free credits

The 25 largest master planning firms based in the United States

Ranked by team size

Top 25 of 4,294 master planning firms based in the United States, ranked by team size, largest first. Data refreshed Sep 20, 2026. RevenueBase Smart Search rates how each company's information relates to master planning 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	Kimley-Horn	Partial evidence	Raleigh, NC, United StatesHQ checked Sep 20, 2026	5,001-10,000	10,117 contacts →
	Partial evidence “Kimley-Horn is one of the nation’s premier planning and design consulting firms.” Source: RevenueBase Database · checked Sep 20, 2026
2	Dewberry	Indirect evidence	Fairfax, VA, United StatesHQ checked Sep 20, 2026	1,001-5,000	2,795 contacts →
	Indirect evidence “Dewberry is a leading, market-facing firm with a proven history of providing professional services to a wide variety of public- and private-sector clients.” Source: RevenueBase Database · checked Sep 20, 2026
3	HOK	Indirect evidence	New York, NY, United StatesHQ checked Sep 20, 2026	1,001-5,000	2,614 contacts →
	Indirect evidence “HOK is a global interdisciplinary design firm.” Source: RevenueBase Database · checked Sep 20, 2026
4	Skidmore, Owings & Merrill SOM	Indirect evidence	New York, NY, United StatesHQ checked Sep 20, 2026	1,001-5,000	1,967 contacts →
	Indirect evidence “Skidmore, Owings & Merrill (SOM) is a global practice of architects, designers, engineers, and planners, responsible for some of the world’s most technically and environmentally…” Source: RevenueBase Database · checked Sep 20, 2026
5	Corgan	Indirect evidence	Dallas, TX, United StatesHQ checked Sep 20, 2026	1,001-5,000	1,414 contacts →
	Indirect evidence “Corgan is an employee-owned architecture and design firm with 22 locations and more than 1,300 team members globally.” Source: RevenueBase Database · checked Sep 20, 2026
6	Bohler	Indirect evidence	Herndon, VA, United StatesHQ checked Sep 20, 2026	501-1,000	1,136 contacts →
	Indirect evidence “Bohler is a land development consulting and technical design firm that helps developers, owners and other real estate professionals identify and act on opportunities and…” Source: RevenueBase Database · checked Sep 20, 2026
7	Bge, INC	Indirect evidence	Houston, TX, United StatesHQ checked Sep 20, 2026	1,001-5,000	1,112 contacts →
	Indirect evidence “Ranked No.” Source: RevenueBase Database · checked Sep 20, 2026
8	The Liro Group	Indirect evidence	Syosset, NY, United StatesHQ checked Sep 20, 2026	1,001-5,000	874 contacts →
	Indirect evidence “The LiRo Group and Hill International’s Northeast Region have merged to become LiRo-Hill, upholding the firms’ strong, long-standing reputations as leaders in the field, and…” Source: RevenueBase Database · checked Sep 20, 2026
9	M3 Engineering & Technology Corp	Indirect evidence	Tucson, AZ, United StatesHQ checked Sep 20, 2026	501-1,000	707 contacts →
	Indirect evidence “M3 is a privately held full service design firm.” Source: RevenueBase Database · checked Sep 20, 2026
10	OHM Advisors	Indirect evidence	Livonia, MI, United StatesHQ checked Sep 20, 2026	501-1,000	701 contacts →
	Indirect evidence “There are many AEP firms.” Source: RevenueBase Database · checked Sep 20, 2026
11	H2m Architects Engineers	Indirect evidence	Melville, NY, United StatesHQ checked Sep 20, 2026	501-1,000	692 contacts →
	Indirect evidence “About H2M H2M architects + engineers is a multi-disciplinary professional consulting and design firm, proud of its long history of client service and consistent ability to meet…” Source: RevenueBase Database · checked Sep 20, 2026
12	RSP Architects	Indirect evidence	Minneapolis, MN, United StatesHQ checked Sep 20, 2026	201-500	620 contacts →
	Indirect evidence “We are makers.” Source: RevenueBase Database · checked Sep 20, 2026
13	Cushing Terrell	Indirect evidence	Billings, MT, United StatesHQ checked Sep 20, 2026	201-500	618 contacts →
	Indirect evidence “Cushing Terrell was founded in 1938 by architects Ralph Cushing and Everett Terrell.” Source: RevenueBase Database · checked Sep 20, 2026
14	Architecture	Partial evidence	Troy, NY, United StatesHQ checked Sep 20, 2026	n/a	610 contacts →
	Partial evidence “architecture+ is a design and service-oriented architectural and planning firm located in Troy in New York's Capital Region.” Source: RevenueBase Database · checked Sep 20, 2026
15	Parkhill	Indirect evidence	Lubbock, TX, United StatesHQ checked Sep 20, 2026	501-1,000	609 contacts →
	Indirect evidence “We are a full-service design firm of extraordinary planners, designers, architects, and engineers.” Source: RevenueBase Database · checked Sep 20, 2026
16	Whitman, Requardt And Associates, LLP	Partial evidence	Baltimore, MD, United StatesHQ checked Sep 20, 2026	501-1,000	601 contacts →
	Partial evidence “Established in 1915, WRA is a nationally-recognized engineering, architectural and environmental planning firm with a reputation for delivering exceptional work on time and within…” Source: RevenueBase Database · checked Sep 20, 2026
17	Mcadams	Partial evidence	Raleigh, NC, United StatesHQ checked Sep 20, 2026	501-1,000	555 contacts →
	Partial evidence “McAdams is a full-service civil engineering, land planning, landscape architecture, transportation, and geomatics firm headquartered in Raleigh, North Carolina with offices across…” Source: RevenueBase Database · checked Sep 20, 2026
18	Ls3p Associates LTD	Partial evidence	Charleston, SC, United StatesHQ checked Sep 20, 2026	201-500	530 contacts →
	Partial evidence “LS3P is an architecture, interiors, and planning firm celebrating more than 60 years of design excellence.” Source: RevenueBase Database · checked Sep 20, 2026
19	WGI	Partial evidence	West Palm Beach, FL, United StatesHQ checked Sep 20, 2026	501-1,000	522 contacts →
	Partial evidence “WGI is a national design and professional services firm specializing in engineering, planning, environmental, geospatial, and technology-driven solutions for the public and…” Source: RevenueBase Database · checked Sep 20, 2026
20	Sasaki	Partial evidence	Boston, MA, United StatesHQ checked Sep 20, 2026	201-500	515 contacts →
	Partial evidence “For over seventy years, Sasaki has brought together the best of architecture, interior design, landscape architecture, planning, urban design, civil engineering, graphic design…” Source: RevenueBase Database · checked Sep 20, 2026
21	Ewingcole	Partial evidence	Philadelphia, PA, United StatesHQ checked Sep 20, 2026	201-500	509 contacts →
	Partial evidence “EwingCole is a nationally recognized architecture, engineering, interior design, and planning firm with offices in Atlanta, Baltimore, Charlotte, Fort Worth, Irvine, New York…” Source: RevenueBase Database · checked Sep 20, 2026
22	Little Diversified Architectural Consulting	Indirect evidence	Little Global, VA, United StatesHQ checked Sep 20, 2026	201-500	509 contacts →
	Indirect evidence “At Little, we deliver results far beyond architecture-results you wouldn’t expect from an architectural firm.” Source: RevenueBase Database · checked Sep 20, 2026
23	MS Consultants, INC	Indirect evidence	Columbus, OH, United StatesHQ checked Sep 20, 2026	201-500	496 contacts →
	Indirect evidence “We are award-winning engineers, architects, planners, and professionals, annually ranking within ENR’s Top 500 Design Firms.” Source: RevenueBase Database · checked Sep 20, 2026
24	Mark Thomas	Partial evidence	San Jose, CA, United StatesHQ checked Sep 20, 2026	501-1,000	489 contacts →
	Partial evidence “Mark Thomas provides planning, civil and structural engineering, construction management, land surveying, landscape architecture and urban design, and district management for…” Source: RevenueBase Database · checked Sep 20, 2026
25	SRF Consulting Group	Partial evidence	Minneapolis, MN, United StatesHQ checked Sep 20, 2026	201-500	471 contacts →
	Partial evidence “SRF Consulting Group is a full-service consulting firm with a broad base of award-winning services, including- Transportation and Transit Planning - Community and Land Use…” Source: RevenueBase Database · checked Sep 20, 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: master planning 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 master planning firms.
Partial evidence: Its own public description names part of master planning firms, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name master planning 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 4,294 master planning firms based in the United States

See the full list, filter by size, metro and specialty, and get verified emails and direct dials for all 50,486 reachable decision-makers.

Free signup · no credit card

View the full list →

Master planning firms based in the United States at a glance

As of Sep 20, 2026

51.2%Verified-email coverage

23.0Average contacts per company

1-10Median size (employees)

4.0%Largest-city concentration · New York

Sep 20, 2026Page data refreshed

Companies by employee count

1-10

2,491

11-50

1,421

51-200

297

201-500

501-1,000

1,001-5,000

5,001-10,000

10001+

Email recency for this list is measured worldwide rather than for United States, so it is reported there. Company counts and contact totals on this page are exact for United States, over 4,294 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 master planning 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 the United States whose own description of what they do matches “master planning 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 master planning 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 master planning firms, and records with no verified work email. Companies headquartered outside United States 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, 50,486 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 20, 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.

Master planning firms by metro

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 master planning 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 master planning firms are there based in the United States?

RevenueBase identified 4,294 master planning firms headquartered in the 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?

Kimley-Horn, headquartered in Raleigh, tops this list with the largest team on record.

Which city has the most master planning firms?

New York leads with 170 headquartered companies, followed by Los Angeles (75) and Houston (71).

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 50,486 verified decision-maker contacts tracked across these 4,294 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 20, 2026.

Ready to reach these companies? Verified emails and direct dials for all 4,294 master planning firms based in the United States. Start with a free account, no credit card.

Download this list →

Related lists

Master planning firms by geography

Browse the directory

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.