Company lists · Data refreshed October 2026

Top 25 Landscape engineering firms based in St. Louis, United States

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

Compiled by the RevenueBase Data Team Data refreshed Oct 17, 2026 55 companies tracked

RevenueBase identified 55 company matches for landscape engineering firms associated with St. Louis, United States as of October 2026 and tracks 1,609 professional contacts across them, including 846 with verified work emails. Across the United States, New York is the largest hub for this category (197 companies); St. Louis has 55.

This list covers company matches for landscape engineering firms associated with St. Louis, 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

55Companies

1,609Contacts tracked

846Verified emails

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The 25 largest landscape engineering firms based in St. Louis, United States

Ranked by team size

Top 25 of 55 company matches for landscape engineering firms based in St. Louis, 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	Trileaf Corporation	Exact match	St. Louis, MO, United StatesHQ recorded Oct 17, 2026	201-500	226 contacts →
	Exact match “Quality work and quick responses - Trileaf gives you both.” Recorded in the RevenueBase company graph · Oct 17, 2026 · View company records in RevenueBase
2	Lawrence Group	Exact match	St. Louis, MO, United StatesHQ recorded Oct 17, 2026	51-200	220 contacts →
	Exact match “Lawrence Group is a best-in-class design firm using the power of people with great ideas to bring clients’ dreams to life.” Recorded in the RevenueBase company graph · Oct 17, 2026 · View company records in RevenueBase
3	David Mason Associates DMA	Exact match	St. Louis, MO, United StatesHQ recorded Oct 17, 2026	51-200	138 contacts →
	Exact match “David Mason + Associates (DMA) is a professional engineering company, incorporated in 1989.” Recorded in the RevenueBase company graph · Oct 17, 2026 · View company records in RevenueBase
4	CDG Engineers, INC	Exact match	St. Louis, MO, United StatesHQ recorded Oct 17, 2026	51-200	114 contacts →
	Exact match “CDG Engineers is a full service, multi-discipline professional services organization with capabilities in civil, structural, electrical and mechanical engineering, as well as…” Recorded in the RevenueBase company graph · Oct 17, 2026 · View company records in RevenueBase
5	CD Companies	Exact match	St. Louis, MO, United StatesHQ recorded Oct 17, 2026	51-200	103 contacts →
	Exact match “Founded in 1959, CD Companies has a rich history of Engineering and Architecture services.” Recorded in the RevenueBase company graph · Oct 17, 2026 · View company records in RevenueBase
6	Cole & Associates	Exact match	St. Louis, MO, United StatesHQ recorded Oct 17, 2026	51-200	100 contacts →
	Exact match “Cole focuses on providing civil engineering, surveying, planning, landscape architecture, GIS, and ADA transition planning services of the highest professional caliber to…” Recorded in the RevenueBase company graph · Oct 17, 2026 · View company records in RevenueBase
7	Cochran	Exact match	St. Louis, MO, United StatesHQ recorded Oct 17, 2026	51-200	79 contacts →
	Exact match “Cochran is a growing, multi-location Civil Engineering/Land Surveying firm currently ranked #11 among the Largest Engineering Firms in the St.” Recorded in the RevenueBase company graph · Oct 17, 2026 · View company records in RevenueBase
8	Case Engineering, INC	Exact match	St. Louis, MO, United StatesHQ recorded Oct 17, 2026	51-200	74 contacts →
	Exact match “The principals at Case Engineering, Inc.” Recorded in the RevenueBase company graph · Oct 17, 2026 · View company records in RevenueBase
9	JEMA	Exact match	St. Louis, MO, United StatesHQ recorded Oct 17, 2026	11-50	51 contacts →
	Exact match “JEMA is a planning, architecture, and design firm located in St.” Recorded in the RevenueBase company graph · Oct 17, 2026 · View company records in RevenueBase
10	SWT Design	Exact match	St. Louis, MO, United StatesHQ recorded Oct 17, 2026	11-50	36 contacts →
	Exact match “Since 1995, we’ve turned the possibilities of urban and natural spaces into living realities, adding meaning and purpose to micro details and macro views.” Recorded in the RevenueBase company graph · Oct 17, 2026 · View company records in RevenueBase
11	Stock & Associates Consulting Engineers, INC	Exact match	St. Louis, MO, United StatesHQ recorded Oct 17, 2026	11-50	30 contacts →
	Exact match Recorded description not available. Recorded in the RevenueBase company graph · Oct 17, 2026 · View company records in RevenueBase
12	Quiet Village Landscaping	Exact match	St. Louis, MO, United StatesHQ recorded Oct 17, 2026	11-50	26 contacts →
	Exact match “You want an outdoor oasis that looks amazing; breaking away from the “cookie cutter” boring yard every other neighbor has.” Recorded in the RevenueBase company graph · Oct 17, 2026 · View company records in RevenueBase
13	Casco Architecture & Engineering	Exact match	St. Louis, MO, United StatesHQ recorded Oct 17, 2026	51-200	23 contacts →
	Exact match “CASCO is a national full-service architecture, engineering, and design firm.” Recorded in the RevenueBase company graph · Oct 17, 2026 · View company records in RevenueBase
14	The Clayton Engineering Company	Exact match	St. Louis, MO, United StatesHQ recorded Oct 17, 2026	11-50	23 contacts →
	Exact match “Clayton Engineering was established in 1926 as a surveying company.” Recorded in the RevenueBase company graph · Oct 17, 2026 · View company records in RevenueBase
15	O'hara Outdoors	Exact match	St. Louis, MO, United StatesHQ recorded Oct 17, 2026	11-50	19 contacts →
	Exact match “As a leading St.” Recorded in the RevenueBase company graph · Oct 17, 2026 · View company records in RevenueBase
16	Frisella Landscape Group	Exact match	St. Louis, MO, United StatesHQ recorded Oct 17, 2026	51-200	19 contacts →
	Exact match “Frisella Landscape Group is a full-service landscape design, build and maintenance company that is proud to serve the St.” Recorded in the RevenueBase company graph · Oct 17, 2026 · View company records in RevenueBase
17	SFP Landscaping INC	Exact match	St. Louis, MO, United StatesHQ recorded Oct 17, 2026	51-200	18 contacts →
	Exact match “SFP Landscaping Inc is a construction company based out of 9800 Gravois Rd, St Louis, MO, United States.” Recorded in the RevenueBase company graph · Oct 17, 2026 · View company records in RevenueBase
18	Frontenac Engineering Group	Exact match	St. Louis, MO, United StatesHQ recorded Oct 17, 2026	11-50	14 contacts →
	Exact match “At Frontenac Engineering, we design and implement solutions, not just projects.” Recorded in the RevenueBase company graph · Oct 17, 2026 · View company records in RevenueBase
19	Arbolope Studio	Exact match	St. Louis, MO, United StatesHQ recorded Oct 17, 2026	11-50	12 contacts →
	Exact match “Arbolope Studio is an award-winning Landscape Architecture, Urban Design and Public Art practice based in the City of St.” Recorded in the RevenueBase company graph · Oct 17, 2026 · View company records in RevenueBase
20	Volz Incorporated	Exact match	St. Louis, MO, United StatesHQ recorded Oct 17, 2026	11-50	11 contacts →
	Exact match “Since our formation in 1969, Volz Incorporated, a professional services company, has been providing Professional Engineering, Land Planning, and Land Surveying services.” Recorded in the RevenueBase company graph · Oct 17, 2026 · View company records in RevenueBase
21	Dtls Landscape Architecture	Exact match	St. Louis, MO, United StatesHQ recorded Oct 17, 2026	11-50	10 contacts →
	Exact match “DTLS is a St.” Recorded in the RevenueBase company graph · Oct 17, 2026 · View company records in RevenueBase
22	Grimes Consulting, INC	Exact match	St. Louis, MO, United StatesHQ recorded Oct 17, 2026	11-50	10 contacts →
	Exact match “Civil Engineering and Surveying Services.” Recorded in the RevenueBase company graph · Oct 17, 2026 · View company records in RevenueBase
23	Planning Design Studio LLC	Exact match	St. Louis, MO, United StatesHQ recorded Oct 17, 2026	1-10	9 contacts →
	Exact match “Planning Design Studio (PDS) is an award-winning landscape architecture, planning, and urban design firm based in Saint Louis, Missouri.” Recorded in the RevenueBase company graph · Oct 17, 2026 · View company records in RevenueBase
24	Allen Outdoor Solutions	Exact match	St. Louis, MO, United StatesHQ recorded Oct 17, 2026	11-50	9 contacts →
	Exact match Recorded description not available. Recorded in the RevenueBase company graph · Oct 17, 2026 · View company records in RevenueBase
25	Triteq INC	Exact match	St. Louis, MO, United StatesHQ recorded Oct 17, 2026	11-50	8 contacts →
	Exact match “TRITEQ provides structural engineering, drafting, and design services to contractors, architects, owners, and manufacturers in the exterior building envelope industry.” 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 55 landscape engineering firms based in St. Louis, United States

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Landscape engineering firms based in St. Louis, United States at a glance

As of Oct 17, 2026

52.6%Verified-email coverage

29.3Average contacts per company

11-50Median size (employees)

Oct 17, 2026Page data refreshed

Companies by employee count

1-10

11-50

51-200

201-500

Email recency for this list is measured across the whole United States list rather than for St. Louis, so it is reported there. Company counts and contact totals on this page are exact for St. Louis, over 55 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 St. Louis, 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 846 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 in the United States

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 St. Louis, United States?

RevenueBase identified 55 company matches for landscape engineering firms associated with St. Louis, 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?

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

Which city in the United States has the most landscape engineering firms?

New York leads the United States with 197 company records, followed by Houston (151) and Austin (147). St. Louis has 55.

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 846 professional contacts with verified work emails tracked across these 55 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.