Company lists · Data refreshed September 2026

Top 25 Sustainable landscape design firms based in the United States

Name: Sustainable landscape design 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 22, 2026 6,690 companies tracked

RevenueBase identified 6,690 sustainable landscape design firms headquartered in the United States as of September 2026 and tracks 56,473 professional contacts across them, including 22,596 with verified work emails. New York is the largest hub.

This list covers sustainable landscape design 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 22, 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 22, 2026 86% judged on-target in blind review

6,690Companies

56,473Contacts tracked

22,596Verified emails

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The 25 largest sustainable landscape design firms based in the United States

Ranked by team size

Top 25 of 6,690 sustainable landscape design firms based in the United States, ranked by team size, largest first. Data refreshed Sep 22, 2026. RevenueBase Smart Search rates how each company's information relates to sustainable landscape design 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	Partial evidence	Chicago, IL, United StatesHQ checked Sep 22, 2026	1,001-5,000	2,958 contacts →
	Partial 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 22, 2026
2	Landcare LLC	Indirect evidence	Frederick, MD, United StatesHQ checked Sep 22, 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 22, 2026
3	OLA	Strong evidence	Austin, TX, United StatesHQ checked Sep 22, 2026	n/a	1,145 contacts →
	Strong evidence “OLA Sustainability, LLC OLA Sustainability is a consulting firm that focuses on integrating sustainable practices into commercial and multifamily design projects.” Source: RevenueBase Database · checked Sep 22, 2026
4	Cushing Terrell	Indirect evidence	Billings, MT, United StatesHQ checked Sep 22, 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 22, 2026
5	SWA	Strong evidence	Sausalito, CA, United StatesHQ checked Sep 22, 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 22, 2026
6	Sasaki	Strong evidence	Boston, MA, United StatesHQ checked Sep 22, 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 22, 2026
7	Design Workshop	Strong evidence	Denver, CO, United StatesHQ checked Sep 22, 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 22, 2026
8	ASD SKY	Strong evidence	Atlanta, GA, United StatesHQ checked Sep 22, 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 22, 2026
9	Hord Coplan Macht	Strong evidence	Baltimore, MD, United StatesHQ checked Sep 22, 2026	201-500	333 contacts →
	Strong evidence “Hord Coplan Macht is an integrated firm offering planning, architecture, landscape architecture, interior design and environmental graphic design with offices in Baltimore…” Source: RevenueBase Database · checked Sep 22, 2026
10	RDG Planning & Design	Partial evidence	Des Moines, IA, United StatesHQ checked Sep 22, 2026	201-500	300 contacts →
	Partial evidence “We're a nationally recognized, relationship-focused interdisciplinary design and planning firm.” Source: RevenueBase Database · checked Sep 22, 2026
11	Landdesign	Strong evidence	Charlotte, NC, United StatesHQ checked Sep 22, 2026	201-500	295 contacts →
	Strong evidence “LandDesign is an award-winning design firm offering urban design, planning, civil engineering and landscape architecture solutions to public, private and federal sector clients…” Source: RevenueBase Database · checked Sep 22, 2026
12	Hart Howerton	Strong evidence	San Francisco, CA, United StatesHQ checked Sep 22, 2026	51-200	294 contacts →
	Strong evidence “We are a team of planners, architects, landscape architects and interior designers headquartered in New York and San Francisco with a network of domestic and international offices.” Source: RevenueBase Database · checked Sep 22, 2026
13	Mithun	Partial evidence	Seattle, WA, United StatesHQ checked Sep 22, 2026	51-200	287 contacts →
	Partial evidence “Mithun is an integrated design firm dedicated to creating positive change in people’s lives.” Source: RevenueBase Database · checked Sep 22, 2026
14	Lhb, INC	Strong evidence	Duluth, MN, United StatesHQ checked Sep 22, 2026	201-500	283 contacts →
	Strong evidence “LHB is a multidisciplinary architecture, engineering, and planning firm known for its sustainable design leadership.” Source: RevenueBase Database · checked Sep 22, 2026
15	BSB Design	Partial evidence	West Des Moines, IA, United StatesHQ checked Sep 22, 2026	51-200	281 contacts →
	Partial evidence “For 60 years, BSB Design has partnered with clients to shape places that perform.” Source: RevenueBase Database · checked Sep 22, 2026
16	Kirksey Architecture	Partial evidence	Houston, TX, United StatesHQ checked Sep 22, 2026	201-500	252 contacts →
	Partial evidence “We are Kirksey, a Texas-based architecture firm, passionate about great architecture and all things sustainable.” Source: RevenueBase Database · checked Sep 22, 2026
17	RRM Design Group	Indirect evidence	San Luis Obipso, United StatesHQ checked Sep 22, 2026	201-500	230 contacts →
	Indirect evidence “RRM’s mission is Creating Environments People Enjoy®.” Source: RevenueBase Database · checked Sep 22, 2026
18	Clean Scapes	Partial evidence	Austin, TX, United StatesHQ checked Sep 22, 2026	1,001-5,000	226 contacts →
	Partial evidence “Clean Scapes Landscaping provides full-service commercial landscaping, specializing in the construction and maintenance of softscape, hardscape, and irrigation.” Source: RevenueBase Database · checked Sep 22, 2026
19	Marina Landscape	Partial evidence	Eight Mile, United StatesHQ checked Sep 22, 2026	501-1,000	208 contacts →
	Partial evidence “Marina Landscape is one of the most acclaimed and successful landscape contractors in the United States today, providing state-of-the-art commercial landscaping services to both…” Source: RevenueBase Database · checked Sep 22, 2026
20	Ayers Saint Gross	Strong evidence	Baltimore, MD, United StatesHQ checked Sep 22, 2026	51-200	202 contacts →
	Strong evidence “Ayers Saint Gross is an interdisciplinary design firm of architects, planners, landscape architects, interior designers, graphic designers, and space analysts.” Source: RevenueBase Database · checked Sep 22, 2026
21	Mariani Landscape	Strong evidence	Lake Bluff, IL, United StatesHQ checked Sep 22, 2026	1,001-5,000	196 contacts →
	Strong evidence “For more than 60 years, Mariani Landscape has been the trusted market leader in the residential landscape industry, and has earned a reputation for designing, constructing…” Source: RevenueBase Database · checked Sep 22, 2026
22	Norris Design	Strong evidence	Denver, CO, United StatesHQ checked Sep 22, 2026	51-200	190 contacts →
	Strong evidence “Established in 1985, Norris Design’s strategic partnership in planning, landscape architecture and branding encompasses local, regional, national and international projects.” Source: RevenueBase Database · checked Sep 22, 2026
23	Rotolo Consultants, INC	Strong evidence	Slidell, LA, United StatesHQ checked Sep 22, 2026	501-1,000	184 contacts →
	Strong evidence “Since 1976, RCI has designed, constructed and maintained many of the most innovative and beautiful landscapes in the southeastern United States.” Source: RevenueBase Database · checked Sep 22, 2026
24	Davis Partnership Architects	Partial evidence	Denver, CO, United StatesHQ checked Sep 22, 2026	51-200	183 contacts →
	Partial evidence “Davis Partnership Architects provides innovative design solutions, earning the trust and respect of our clients and peers alike.” Source: RevenueBase Database · checked Sep 22, 2026
25	WRT	Strong evidence	Philadelphia, PA, United StatesHQ checked Sep 22, 2026	51-200	180 contacts →
	Strong evidence “WRT is a team of planners, urban designers, architects, and landscape architects.” Source: RevenueBase Database · checked Sep 22, 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: sustainable landscape design 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 sustainable landscape design firms.
Partial evidence: Its own public description names part of sustainable landscape design firms, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name sustainable landscape design 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 6,690 sustainable landscape design firms based in the United States

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Sustainable landscape design firms based in the United States at a glance

As of Sep 22, 2026

40.0%Verified-email coverage

8.4Average contacts per company

1-10Median size (employees)

2.0%Largest-city concentration · New York

Sep 22, 2026Page data refreshed

Companies by employee count

1-10

4,140

11-50

2,005

51-200

418

201-500

501-1,000

1,001-5,000

5,001-10,000

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 6,690 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 sustainable landscape design 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 “sustainable landscape design 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 sustainable landscape design 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 sustainable landscape design 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, 22,596 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 22, 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.

Sustainable landscape design 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 sustainable landscape design 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 sustainable landscape design firms are there based in the United States?

RevenueBase identified 6,690 sustainable landscape design 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 sustainable landscape design firms?

New York leads with 136 headquartered companies, followed by Austin (97) and Seattle (90).

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 22,596 verified decision-maker contacts tracked across these 6,690 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 22, 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.