Company lists · Data refreshed October 2026

Top 25 Landscape engineering firms based in the United States

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

Compiled by the RevenueBase Data Team Data refreshed Oct 17, 2026 11,503 companies tracked

RevenueBase identified 11,503 company matches for landscape engineering firms associated with the United States as of October 2026 and tracks 271,821 professional contacts across them, including 130,161 with verified work emails. New York is the largest hub.

This list covers company matches for landscape engineering firms associated with the United States, 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 17, 2026.

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 17, 2026 How this list was built

11,503Companies

271,821Contacts tracked

130,161Verified emails

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The 25 largest landscape engineering firms based in the United States

Ranked by team size

Top 25 of 11,503 company matches for landscape engineering firms based in the United States, ordered by professional contacts tracked in RevenueBase, largest first. Recorded Oct 17, 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	Tetra Tech	Exact match	Pasadena, CA, United StatesHQ recorded Oct 17, 2026	10001+	13,725 contacts →
	Exact match “Tetra Tech is the leader in water, environment and sustainable infrastructure, providing high-end technical and engineering services for projects worldwide.” Recorded in the RevenueBase company graph · Oct 17, 2026 · View company records in RevenueBase
2	WSP In The U.S	Exact match	New York, NY, United StatesHQ recorded Oct 17, 2026	10001+	10,184 contacts →
	Exact match “What if you could shape built and natural environments – and the future of those that use them?” Recorded in the RevenueBase company graph · Oct 17, 2026 · View company records in RevenueBase
3	Terracon	Exact match	Olathe, KS, United StatesHQ recorded Oct 17, 2026	5,001-10,000	6,380 contacts →
	Exact match “Terracon is a 100 percent employee-owned consulting engineering firm providing quality services to clients.” Recorded in the RevenueBase company graph · Oct 17, 2026 · View company records in RevenueBase
4	Perkins&will	Exact match	Chicago, IL, United StatesHQ recorded Oct 17, 2026	1,001-5,000	3,165 contacts →
	Exact match “Since 1935, we’ve believed that design has the power to make the world a better, more beautiful place.” Recorded in the RevenueBase company graph · Oct 17, 2026 · View company records in RevenueBase
5	Geosyntec Consultants	Exact match	Boca Raton, FL, United StatesHQ recorded Oct 17, 2026	1,001-5,000	2,521 contacts →
	Exact match “Geosyntec is a consulting and engineering firm that works with private and public sector clients to address new ventures and complex problems involving our environment, natural…” Recorded in the RevenueBase company graph · Oct 17, 2026 · View company records in RevenueBase
6	Brown And Caldwell	Exact match	Walnut Creek, CA, United StatesHQ recorded Oct 17, 2026	1,001-5,000	2,510 contacts →
	Exact match “Headquartered in Walnut Creek, Calif, Brown and Caldwell is an employee-owned firm with 2,100+ professionals serving clients locally and globally from 52 locations.” Recorded in the RevenueBase company graph · Oct 17, 2026 · View company records in RevenueBase
7	Langan Engineering & Environmental Services	Exact match	Parsippany, NJ, United StatesHQ recorded Oct 17, 2026	1,001-5,000	2,402 contacts →
	Exact match “Langan's client-focused, highly entrepreneurial culture cultivates an environment of opportunities in which career growth and teamwork flourish.” Recorded in the RevenueBase company graph · Oct 17, 2026 · View company records in RevenueBase
8	Olsson	Exact match	Lincoln, NE, United StatesHQ recorded Oct 17, 2026	1,001-5,000	2,229 contacts →
	Exact match “Olsson is an engineering firm made up of people who craft expert solutions and designs that improve communities.” Recorded in the RevenueBase company graph · Oct 17, 2026 · View company records in RevenueBase
9	LJA	Exact match	Houston, TX, United StatesHQ recorded Oct 17, 2026	1,001-5,000	2,148 contacts →
	Exact match “Employee-Owned.” Recorded in the RevenueBase company graph · Oct 17, 2026 · View company records in RevenueBase
10	IMEG	Exact match	Rock Island, IL, United StatesHQ recorded Oct 17, 2026	1,001-5,000	2,064 contacts →
	Exact match “Leaders in Engineering and Innovation.” Recorded in the RevenueBase company graph · Oct 17, 2026 · View company records in RevenueBase
11	Carollo Engineers	Exact match	Walnut Creek, CA, United StatesHQ recorded Oct 17, 2026	1,001-5,000	1,811 contacts →
	Exact match “For more than 90 years, Carollo Engineers has been dedicated exclusively to water and wastewater solutions.” Recorded in the RevenueBase company graph · Oct 17, 2026 · View company records in RevenueBase
12	Bowman Consulting	Exact match	Reston, VA, United StatesHQ recorded Oct 17, 2026	1,001-5,000	1,778 contacts →
	Exact match “Headquartered in Reston, Virginia, Bowman is a national engineering services firm delivering infrastructure solutions to customers who own, develop and maintain the built…” Recorded in the RevenueBase company graph · Oct 17, 2026 · View company records in RevenueBase
13	CHA Consulting, INC	Exact match	Albany, NY, United StatesHQ recorded Oct 17, 2026	1,001-5,000	1,733 contacts →
	Exact match “CHA Consulting, Inc.(CHA) is an innovative, full-service engineering, design, consulting, and program/construction management firm providing a wide range of technology-enhanced…” Recorded in the RevenueBase company graph · Oct 17, 2026 · View company records in RevenueBase
14	GEI Consultants, INC	Exact match	Woburn, MA, United StatesHQ recorded Oct 17, 2026	1,001-5,000	1,639 contacts →
	Exact match Recorded description not available. Recorded in the RevenueBase company graph · Oct 17, 2026 · View company records in RevenueBase
15	Landcare LLC	Exact match	Frederick, MD, United StatesHQ recorded Oct 17, 2026	1,001-5,000	1,461 contacts →
	Exact match “Inspiring Others with Meaningful Environments: LandCare is committed to creating and maintaining meaningful environments for customers nationwide.” Recorded in the RevenueBase company graph · Oct 17, 2026 · View company records in RevenueBase
16	Walter P Moore	Exact match	Houston, TX, United StatesHQ recorded Oct 17, 2026	1,001-5,000	1,404 contacts →
	Exact match “Welcome to Walter P Moore!” Recorded in the RevenueBase company graph · Oct 17, 2026 · View company records in RevenueBase
17	Apex Companies	Exact match	Rockville, MD, United StatesHQ recorded Oct 17, 2026	1,001-5,000	1,266 contacts →
	Exact match “Who is Apex?” Recorded in the RevenueBase company graph · Oct 17, 2026 · View company records in RevenueBase
18	Volkert, INC	Exact match	Mobile, AL, United StatesHQ recorded Oct 17, 2026	1,001-5,000	1,201 contacts →
	Exact match “Volkert’s history began in 1925 when it was founded in New Orleans as Doullut & Erwin to provide waterfront and heavy construction services, as well as airport design services…” Recorded in the RevenueBase company graph · Oct 17, 2026 · View company records in RevenueBase
19	Bohler	Exact match	Herndon, VA, United StatesHQ recorded Oct 17, 2026	501-1,000	1,184 contacts →
	Exact match “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…” Recorded in the RevenueBase company graph · Oct 17, 2026 · View company records in RevenueBase
20	Bge, INC	Exact match	Houston, TX, United StatesHQ recorded Oct 17, 2026	1,001-5,000	1,134 contacts →
	Exact match “Ranked No.” Recorded in the RevenueBase company graph · Oct 17, 2026 · View company records in RevenueBase
21	WSB	Exact match	Minneapolis, MN, United StatesHQ recorded Oct 17, 2026	1,001-5,000	1,133 contacts →
	Exact match “Forge ahead.” Recorded in the RevenueBase company graph · Oct 17, 2026 · View company records in RevenueBase
22	Timmons Group	Exact match	Richmond, VA, United StatesHQ recorded Oct 17, 2026	1,001-5,000	1,122 contacts →
	Exact match “Timmons Group is an engineering & technology firm specializing in civil, environmental, GIS, and surveying services to clients across the US.” Recorded in the RevenueBase company graph · Oct 17, 2026 · View company records in RevenueBase
23	David Evans And Associates, INC	Exact match	Portland, OR, United StatesHQ recorded Oct 17, 2026	501-1,000	1,068 contacts →
	Exact match “Since its founding in 1976 in Portland, Oregon, DEA has become a recognized leader for progressive and sustainable design and management solutions for complex transportation, land…” Recorded in the RevenueBase company graph · Oct 17, 2026 · View company records in RevenueBase
24	Bolton & Menk, INC	Exact match	Mankato, MN, United StatesHQ recorded Oct 17, 2026	1,001-5,000	1,041 contacts →
	Exact match “Bolton & Menk is a proudly employee‑owned and operated firm and Top Workplace, delivering quality engineering, design, and planning solutions.” Recorded in the RevenueBase company graph · Oct 17, 2026 · View company records in RevenueBase
25	GZA Geoenvironmental, INC	Exact match	Norwood, MA, United StatesHQ recorded Oct 17, 2026	501-1,000	903 contacts →
	Exact match “Founded in 1964 as a soils and foundations specialty consultant, GZA GeoEnvironmental, Inc.(GZA) has grown into a full-service company providing its clients with highly…” Recorded in the RevenueBase company graph · Oct 17, 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 “landscape engineering 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 11,503 landscape engineering firms based in the United States

See the full list, filter by size, metro and specialty, and access 130,161 tracked professional contacts with verified work emails. Direct dials are available where recorded.

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Landscape engineering firms based in the United States at a glance

As of Oct 17, 2026

47.9%Verified-email coverage

23.6Average contacts per company

1-10Median size (employees)

1.7%Largest-city concentration · New York

Oct 17, 2026Page data refreshed

Companies by employee count

1-10

5,847

11-50

4,058

51-200

1,205

201-500

228

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 11,503 companies.

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.
What qualifies: Company records associated with the United States whose business descriptions match “landscape engineering 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. Where headquarters information is recorded, preview rows are also filtered to this page’s location. 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 130,161 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 17, 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.

Landscape engineering firms by metro

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 “landscape engineering firms”; each Exact match badge shows search membership, not an individual similarity or quality score.

How many landscape engineering firms are there based in the United States?

RevenueBase identified 11,503 company matches for landscape engineering firms associated with the United States 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?

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

Which city has the most landscape engineering firms?

New York leads with 197 company records, followed by Houston (151) and Austin (147).

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 130,161 professional contacts with verified work emails tracked across these 11,503 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 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 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.