Company lists · Data refreshed September 2026

Top 25 Landscape architecture firms based in the United States

Name: Landscape architecture 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 17, 2026 7,813 companies tracked

RevenueBase identified 7,813 landscape architecture firms headquartered in the United States as of September 2026 and tracks 95,391 professional contacts across them, including 41,769 with verified work emails. New York is the largest hub.

This list covers landscape architecture 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 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

7,813Companies

95,391Contacts tracked

41,769Verified emails

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The 25 largest landscape architecture firms based in the United States

Ranked by team size

Top 25 of 7,813 landscape architecture firms based in the United States, ranked by team size, largest first. Data refreshed Sep 17, 2026. RevenueBase Smart Search rates how each company's information relates to landscape architecture 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	Perkins&will	Indirect evidence	Chicago, IL, United StatesHQ checked Sep 17, 2026	1,001-5,000	2,958 contacts →
	Indirect evidence “Since 1935, we’ve believed that design has the power to make the world a better, more beautiful place.” Source: RevenueBase Database · checked Sep 17, 2026
2	Landcare LLC	Indirect evidence	Frederick, MD, United StatesHQ checked Sep 17, 2026	1,001-5,000	1,388 contacts →
	Indirect evidence “Inspiring Others with Meaningful Environments: LandCare is committed to creating and maintaining meaningful environments for customers nationwide.” Source: RevenueBase Database · checked Sep 17, 2026
3	Bge, INC	Indirect evidence	Houston, TX, United StatesHQ checked Sep 17, 2026	1,001-5,000	1,112 contacts →
	Indirect evidence “Ranked No.” Source: RevenueBase Database · checked Sep 17, 2026
4	Goodwyn Mills Cawood GMC	Partial evidence	Montgomery, AL, United StatesHQ checked Sep 17, 2026	501-1,000	653 contacts →
	Partial evidence “ENR Southeast 2024 Design Firm of the Year Goodwyn Mills Cawood (GMC) is one of the largest architecture and engineering firms in the Southeast.” Source: RevenueBase Database · checked Sep 17, 2026
5	Watg And Wimberly Interiors	Strong evidence	Tustin, CA, United StatesHQ checked Sep 17, 2026	201-500	646 contacts →
	Strong evidence “Advisory \| Master Planning \| Architecture \| Landscape Architecture \| Wimberly Interiors.” Source: RevenueBase Database · checked Sep 17, 2026
6	Cushing Terrell	Indirect evidence	Billings, MT, United StatesHQ checked Sep 17, 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 17, 2026
7	Parkhill	Indirect evidence	Lubbock, TX, United StatesHQ checked Sep 17, 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 17, 2026
8	SWA	Strong evidence	Sausalito, CA, United StatesHQ checked Sep 17, 2026	201-500	559 contacts →
	Strong evidence “SWA is a global landscape architecture, planning, and urban design firm with eight independent studios across the U.S.” Source: RevenueBase Database · checked Sep 17, 2026
9	Mcadams	Strong evidence	Raleigh, NC, United StatesHQ checked Sep 17, 2026	501-1,000	555 contacts →
	Strong 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 17, 2026
10	KLJ	Indirect evidence	Bismarck, ND, United StatesHQ checked Sep 17, 2026	501-1,000	539 contacts →
	Indirect evidence “Since the 1930s, KLJ has worked alongside communities and clients of all sizes, partnering with cities, counties, and developers – just to name a few.” Source: RevenueBase Database · checked Sep 17, 2026
11	WGI	Indirect evidence	West Palm Beach, FL, United StatesHQ checked Sep 17, 2026	501-1,000	522 contacts →
	Indirect 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 17, 2026
12	Sasaki	Strong evidence	Boston, MA, United StatesHQ checked Sep 17, 2026	201-500	515 contacts →
	Strong 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 17, 2026
13	Ewingcole	Partial evidence	Philadelphia, PA, United StatesHQ checked Sep 17, 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 17, 2026
14	HED	Indirect evidence	Royal Oak, MI, United StatesHQ checked Sep 17, 2026	201-500	508 contacts →
	Indirect evidence “At HED, great design is about thinking creatively to overcome challenges and improve real world outcomes.” Source: RevenueBase Database · checked Sep 17, 2026
15	Mark Thomas	Strong evidence	San Jose, CA, United StatesHQ checked Sep 17, 2026	501-1,000	489 contacts →
	Strong 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 17, 2026
16	Ceso, INC	Indirect evidence	Dayton, OH, United StatesHQ checked Sep 17, 2026	501-1,000	485 contacts →
	Indirect evidence “For over thirty-five years, CESO has combined creativity with technical expertise to provide solutions that address our clients’ unique challenges and opportunities.” Source: RevenueBase Database · checked Sep 17, 2026
17	RICK	Indirect evidence	San Diego, CA, United StatesHQ checked Sep 17, 2026	201-500	446 contacts →
	Indirect evidence “RICK is an award-winning planning, design, and engineering firm.” Source: RevenueBase Database · checked Sep 17, 2026
18	Design Workshop	Strong evidence	Denver, CO, United StatesHQ checked Sep 17, 2026	51-200	418 contacts →
	Strong evidence “Design Workshop is a 100% employee-owned international design studio spanning the fields of landscape architecture, urban design, planning, economics, environmental graphic…” Source: RevenueBase Database · checked Sep 17, 2026
19	AKRF	Partial evidence	New York, NY, United StatesHQ checked Sep 17, 2026	201-500	394 contacts →
	Partial evidence “Founded in 1981, AKRF employs 400 planners, engineers, scientists, economists, landscape designers, geologists, historians, archaeologists, acousticians, and many related…” Source: RevenueBase Database · checked Sep 17, 2026
20	NAC	Indirect evidence	Seattle, WA, United StatesHQ checked Sep 17, 2026	201-500	377 contacts →
	Indirect evidence “NAC is an award-winning design firm with talented team members working in offices in Seattle and Spokane, WA, Los Angeles and San Diego, CA, and Columbus, OH.” Source: RevenueBase Database · checked Sep 17, 2026
21	ASD SKY	Strong evidence	Atlanta, GA, United StatesHQ checked Sep 17, 2026	201-500	344 contacts →
	Strong evidence “Established in 1963, ASD \| SKY has evolved into a multi-disciplinary design firm offering interiors, architectural, landscape, and graphic design services to a variety of…” Source: RevenueBase Database · checked Sep 17, 2026
22	SCB	Partial evidence	Chicago, IL, United StatesHQ checked Sep 17, 2026	201-500	343 contacts →
	Partial evidence “SCB is an architecture, planning, interior and urban design firm.” Source: RevenueBase Database · checked Sep 17, 2026
23	Greenbergfarrow GF	Strong evidence	Atlanta, GA, United StatesHQ checked Sep 17, 2026	201-500	342 contacts →
	Strong evidence “GF is a fully integrated architecture, engineering, planning, interior design, landscape architecture and land development firm.” Source: RevenueBase Database · checked Sep 17, 2026
24	OTAK	Indirect evidence	Portland, OR, United StatesHQ checked Sep 17, 2026	201-500	341 contacts →
	Indirect evidence “Otak values people, both those in our workplace and those that are impacted by the projects we undertake.” Source: RevenueBase Database · checked Sep 17, 2026
25	Cooper Carry	Partial evidence	Atlanta, GA, United StatesHQ checked Sep 17, 2026	201-500	336 contacts →
	Partial evidence “Cooper Carry is a national architecture firm that brings an internationally recognized team of design professionals to the wide variety of project types we engage in, all united…” 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: landscape architecture 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 landscape architecture firms.
Partial evidence: Its own public description names part of landscape architecture firms, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name landscape architecture 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 7,813 landscape architecture firms based in the United States

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Landscape architecture firms based in the United States at a glance

As of Sep 17, 2026

43.8%Verified-email coverage

12.2Average contacts per company

1-10Median size (employees)

2.5%Largest-city concentration · New York

Sep 17, 2026Page data refreshed

Companies by employee count

1-10

4,486

11-50

2,505

51-200

624

201-500

105

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 7,813 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 landscape architecture 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 “landscape architecture 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 landscape architecture 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 landscape architecture 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, 41,769 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.

Landscape architecture 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 landscape architecture 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 landscape architecture firms are there based in the United States?

RevenueBase identified 7,813 landscape architecture 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?

Perkins&will, headquartered in Chicago, tops this list with the largest team on record.

Which city has the most landscape architecture firms?

New York leads with 193 headquartered companies, followed by Los Angeles (122) and Austin (110).

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 41,769 verified decision-maker contacts tracked across these 7,813 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.