Company lists · Data refreshed September 2026

Top 25 Landscape architecture firms based in Washington, United States

Name: Landscape architecture firms based in Washington, United States
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Sep 17, 2026 37 companies tracked

RevenueBase identified 37 landscape architecture firms headquartered in Washington, United States as of September 2026 and tracks 486 professional contacts across them, including 261 with verified work emails. New York is the largest hub.

This list covers landscape architecture firms 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 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

37Companies

486Contacts tracked

261Verified emails

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The 25 largest landscape architecture firms based in Washington, United States

Ranked by team size

Top 25 of 37 landscape architecture firms based in Washington, 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	Torti Gallas Partners	Partial evidence	Washington, DC, United StatesHQ checked Sep 17, 2026	51-200	142 contacts →
	Partial evidence “With a passion for architecture, urban design, planning and placemaking, Torti Gallas + Partners (TG+P) designs places and buildings that transform neighborhoods, promoting…” Source: RevenueBase Database · checked Sep 17, 2026
2	Shalom Baranes Associates	Partial evidence	Washington, DC, United StatesHQ checked Sep 17, 2026	51-200	84 contacts →
	Partial 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 17, 2026
3	David M. Schwarz Architects	Indirect evidence	Washington, DC, United StatesHQ checked Sep 17, 2026	11-50	40 contacts →
	Indirect evidence “David M.” Source: RevenueBase Database · checked Sep 17, 2026
4	CGS Architects	Partial evidence	Washington, DC, United StatesHQ checked Sep 17, 2026	11-50	30 contacts →
	Partial evidence “CGS Architects was founded in Georgetown in 1981 to provide services in master planning, architecture and interior design.” Source: RevenueBase Database · checked Sep 17, 2026
5	Fillat Architecture	Indirect evidence	Washington, DC, United StatesHQ checked Sep 17, 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 17, 2026
6	Oehme, VAN Sweden OVS	Strong evidence	Washington, DC, United StatesHQ checked Sep 17, 2026	11-50	18 contacts →
	Strong evidence “OvS is an award-winning practice of landscape architecture based in Washington, DC.” Source: RevenueBase Database · checked Sep 17, 2026
7	KGP Design Studio, LLC	Partial evidence	Washington, DC, United StatesHQ checked Sep 17, 2026	11-50	17 contacts →
	Partial evidence “KGP design studio is a diverse, international and multidisciplinary design firm with expertise in architecture, urban design and transit.” Source: RevenueBase Database · checked Sep 17, 2026
8	Bradley Site Design, INC	Strong evidence	Washington, DC, United StatesHQ checked Sep 17, 2026	11-50	16 contacts →
	Strong evidence “Located in Washington, DC, Bradley Site Design is a dynamic Landscape Architecture, Civil Engineering and Planning firm founded in 1994 and dedicated to the creation of socially…” Source: RevenueBase Database · checked Sep 17, 2026
9	LEE And Associates, INC	Indirect evidence	Washington, DC, United StatesHQ checked Sep 17, 2026	11-50	12 contacts →
	Indirect evidence “lee and associates, inc (lai) is a respected and highly responsive firm offering planning and design professional services as it relates to how man relates to the land and the…” Source: RevenueBase Database · checked Sep 17, 2026
10	Studiomb	Partial evidence	Washington, DC, United StatesHQ checked Sep 17, 2026	11-50	12 contacts →
	Partial evidence “StudioMB, located in Washington, D.C, pursues a range of project types and provides complete professional services in the fields of architecture, campus and community planning…” Source: RevenueBase Database · checked Sep 17, 2026
11	Mcla Architectural Lighting Design	Partial evidence	Washington, DC, United StatesHQ checked Sep 17, 2026	11-50	10 contacts →
	Partial evidence “MCLA is a thriving architectural lighting design firm founded in 1996 by Maureen Moran.” Source: RevenueBase Database · checked Sep 17, 2026
12	Richardson & Associates Landscape Architecture	Indirect evidence	Washington, DC, United StatesHQ checked Sep 17, 2026	1-10	8 contacts →
	Indirect evidence “We create distinctive, sophisticated natural environments for modern living.” Source: RevenueBase Database · checked Sep 17, 2026
13	GTM DC	Partial evidence	Washington, DC, United StatesHQ checked Sep 17, 2026	1-10	8 contacts →
	Partial evidence “GTM Architects of Washington DC, LLC (GTM\|DC) is a full service, award-winning firm offering services in architecture, planning and design.” Source: RevenueBase Database · checked Sep 17, 2026
14	Casey & Company	Partial evidence	Washington, DC, United StatesHQ checked Sep 17, 2026	1-10	6 contacts →
	Partial evidence “At Casey & Company, we help commercial and residential property owners, governments, and municipalities create sustainable, high-impact landscapes that inspire, endure, and…” Source: RevenueBase Database · checked Sep 17, 2026
15	Townhome Landscapes	Partial evidence	Washington, DC, United StatesHQ checked Sep 17, 2026	1-10	6 contacts →
	Partial evidence “Washington DC's Premier One-Stop Shop for Landscape Design, Build, and Maintenance.” Source: RevenueBase Database · checked Sep 17, 2026
16	R2l Architects, Pllc	Partial evidence	Washington, DC, United StatesHQ checked Sep 17, 2026	11-50	5 contacts →
	Partial evidence “R2L:Architects, PLLC was founded in 2010 to create elegant solutions to the architectural challenges faced by our clients, including communities, corporations, institutions, and…” Source: RevenueBase Database · checked Sep 17, 2026
17	Natural Resources Design, INC	Indirect evidence	Washington, DC, United StatesHQ checked Sep 17, 2026	1-10	5 contacts →
	Indirect evidence Source: RevenueBase Database · checked Sep 17, 2026
18	Carvalho And Good, Pllc	Indirect evidence	Washington, DC, United StatesHQ checked Sep 17, 2026	1-10	3 contacts →
	Indirect evidence “Carvalho & Good, PLLC believes in establishing strong working relationships with our clients.” Source: RevenueBase Database · checked Sep 17, 2026
19	Arentz Landscape Architects	Partial evidence	Washington, DC, United StatesHQ checked Sep 17, 2026	11-50	3 contacts →
	Partial evidence “Arentz Landscape Architects is a boutique firm with regional offices in Washington, DC, Warrenton, VA and Rochester, NY.” Source: RevenueBase Database · checked Sep 17, 2026
20	Outerbridge Horsey Associates	Partial evidence	Washington, United StatesHQ checked Sep 17, 2026	11-50	2 contacts →
	Partial evidence “Outerbridge Horsey Assoc is an Architecture and Planning company located in 1228 1/2 31st St Nw, Washington, Null, United States.” Source: RevenueBase Database · checked Sep 17, 2026
21	Push Studio, LLC	Indirect evidence	Washington, DC, United StatesHQ checked Sep 17, 2026	1-10	2 contacts →
	Indirect evidence “PUSH believes that the interpretation of special site signatures yields innovative and interactive designed environments.” Source: RevenueBase Database · checked Sep 17, 2026
22	Studio AKA Landscape Architecture	Indirect evidence	Washington, United StatesHQ checked Sep 17, 2026	1-10	2 contacts →
	Indirect evidence Source: RevenueBase Database · checked Sep 17, 2026
23	Checa Architects	Indirect evidence	Washington, DC, United StatesHQ checked Sep 17, 2026	1-10	2 contacts →
	Indirect evidence “A full service firm creating exquisitely crafted, modern, ecologically sensitive, light-filled spaces and homes that lift the human spirit.” Source: RevenueBase Database · checked Sep 17, 2026
24	Lawson Yardscapes	Partial evidence	Washington, DC, United StatesHQ checked Sep 17, 2026	1-10	1 contacts →
	Partial evidence “Creating fulfilling and sustainable landscapes in the DC/Maryland/VA area - Landscapes that celebrate our unique living spaces and minimizing lawns in lieu of native plants that…” Source: RevenueBase Database · checked Sep 17, 2026
25	David Wooden Studio	Strong evidence	Washington, DC, United StatesHQ checked Sep 17, 2026	1-10	1 contacts →
	Strong evidence “David Wooden Studio is a landscape architecture firm based in Washington, DC.” 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 37 landscape architecture firms based in Washington, United States

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Landscape architecture firms based in Washington, United States at a glance

As of Sep 17, 2026

53.7%Verified-email coverage

13.1Average contacts per company

1-10Median size (employees)

521.6%Largest-city concentration · New York

Sep 17, 2026Page data refreshed

Companies by employee count

1-10

11-50

51-200

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 37 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 Washington, 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 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, 261 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 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 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 Washington, United States?

RevenueBase identified 37 landscape architecture firms 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?

Torti Gallas Partners, headquartered in Washington, 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 261 verified decision-maker contacts tracked across these 37 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.