Company lists · Data refreshed September 2026

Top 25 Environmental design firms based in Irvine, United States

Name: Environmental design firms based in Irvine, United States
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Sep 19, 2026 53 companies tracked

RevenueBase identified 53 company matches for environmental design firms associated with Irvine, United States as of September 2026 and tracks 2,586 professional contacts across them, including 1,352 with verified work emails. Across the United States, New York is the largest hub for this category (553 companies); Irvine has 53.

This list covers company matches for environmental design firms associated with Irvine, 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 September 19, 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 Sep 19, 2026 How this list was built

53Companies

2,586Contacts tracked

1,352Verified emails

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The 25 largest environmental design firms based in Irvine, United States

Ranked by team size

Top 25 of 53 company matches for environmental design firms based in Irvine, United States, ordered by professional contacts tracked in RevenueBase, largest first. Recorded Sep 19, 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	Lpa, INC	Exact match	Irvine, CA, United StatesHQ recorded Sep 19, 2026	501-1,000	728 contacts →
	Exact match “Since LPA was founded in 1965, it's been our mission to deliver timeless, sustainable designs that benefit the environment, generate lasting value, enrich the human experience and…” Recorded in the RevenueBase company graph · Sep 19, 2026 · View company records in RevenueBase
2	KTGY	Exact match	Irvine, CA, United StatesHQ recorded Sep 19, 2026	201-500	461 contacts →
	Exact match “Design Lives at KTGY.” Recorded in the RevenueBase company graph · Sep 19, 2026 · View company records in RevenueBase
3	LSA	Exact match	Irvine, CA, United StatesHQ recorded Sep 19, 2026	201-500	332 contacts →
	Exact match “LSA is a diversified environmental, transportation, and community planning firm that evolved from a small consulting firm.” Recorded in the RevenueBase company graph · Sep 19, 2026 · View company records in RevenueBase
4	IDS Group, INC	Exact match	Irvine, CA, United StatesHQ recorded Sep 19, 2026	51-200	205 contacts →
	Exact match “IDS is an award-winning engineering and architectural firm offering multidisciplinary consulting services through our staff of 90 professionals.” Recorded in the RevenueBase company graph · Sep 19, 2026 · View company records in RevenueBase
5	WHA Architects Planners Designers	Exact match	Irvine, CA, United StatesHQ recorded Sep 19, 2026	51-200	140 contacts →
	Exact match “Original, relevant designs that work in the real world.” Recorded in the RevenueBase company graph · Sep 19, 2026 · View company records in RevenueBase
6	TCA Architects, INC	Exact match	Irvine, CA, United StatesHQ recorded Sep 19, 2026	51-200	112 contacts →
	Exact match “Inspired by cultural narrative and evolutionary design, TCA Architects are dedicated to creating experiences that champion community and promote forward-thinking change.” Recorded in the RevenueBase company graph · Sep 19, 2026 · View company records in RevenueBase
7	MVE Partners, INC	Exact match	Irvine, CA, United StatesHQ recorded Sep 19, 2026	51-200	111 contacts →
	Exact match “Established in 1974, MVE + Partners (MVE) is one of the country’s most innovative and respected design and planning firms encompassing a 100-person team of architects, designers…” Recorded in the RevenueBase company graph · Sep 19, 2026 · View company records in RevenueBase
8	Mission Landscape Companies	Exact match	Irvine, CA, United StatesHQ recorded Sep 19, 2026	201-500	86 contacts →
	Exact match “Mission Landscape Companies are award winning, and one of the largest integrated professional landscape firms in the United States.” Recorded in the RevenueBase company graph · Sep 19, 2026 · View company records in RevenueBase
9	Bassenian Lagoni Architects	Exact match	Irvine, CA, United StatesHQ recorded Sep 19, 2026	51-200	68 contacts →
	Exact match “Bassenian Lagoni is an award-winning architectural, planning and interior design firm involved with projects around the globe.” Recorded in the RevenueBase company graph · Sep 19, 2026 · View company records in RevenueBase
10	Robert Hidey Architects	Exact match	Irvine, CA, United StatesHQ recorded Sep 19, 2026	11-50	30 contacts →
	Exact match “The mission of Robert Hidey Architects is to offer a complete relationship with clients that address their goals by providing a superior level of timeless architectural designs…” Recorded in the RevenueBase company graph · Sep 19, 2026 · View company records in RevenueBase
11	Hpa, INC	Exact match	Irvine, CA, United StatesHQ recorded Sep 19, 2026	11-50	29 contacts →
	Exact match “HPA, Inc, is a multi-disciplined design corporation that offers services in architecture, planning, and interiors to institutions, corporations, and developers throughout the…” Recorded in the RevenueBase company graph · Sep 19, 2026 · View company records in RevenueBase
12	SMS Architects	Exact match	Irvine, CA, United StatesHQ recorded Sep 19, 2026	11-50	22 contacts →
	Exact match “SMS Architects is a full-service design firm providing architecture, master planning, interior architecture/design, space planning, programming, historical and adaptive reuse…” Recorded in the RevenueBase company graph · Sep 19, 2026 · View company records in RevenueBase
13	Lifescapes International INC	Exact match	Irvine, CA, United StatesHQ recorded Sep 19, 2026	11-50	19 contacts →
	Exact match “Beauty is good business.” Recorded in the RevenueBase company graph · Sep 19, 2026 · View company records in RevenueBase
14	Brightview Design Group	Exact match	Irvine, CA, United StatesHQ recorded Sep 19, 2026	51-200	17 contacts →
	Exact match “BrightView Design Group (BVDG) is the landscape architecture and design practice within BrightView, the nation's largest integrated landscape services company.” Recorded in the RevenueBase company graph · Sep 19, 2026 · View company records in RevenueBase
15	Paramount & CO	Exact match	Irvine, CA, United StatesHQ recorded Sep 19, 2026	11-50	16 contacts →
	Exact match “You've seen our work on huge stadiums and tiny vehicles.” Recorded in the RevenueBase company graph · Sep 19, 2026 · View company records in RevenueBase
16	Ridge Landscape Architects	Exact match	Irvine, CA, United StatesHQ recorded Sep 19, 2026	11-50	15 contacts →
	Exact match “Welcome to Ridge Landscape Architects WHO WE ARE EXPERIENCE RLA (Ridge Landscape Architects) is a professional landscape architectural firm that offers over 25 years of experience…” Recorded in the RevenueBase company graph · Sep 19, 2026 · View company records in RevenueBase
17	Tatsumi & Partners, INC	Exact match	Irvine, CA, United StatesHQ recorded Sep 19, 2026	11-50	15 contacts →
	Exact match “Landscape Architecture - Urban Design - Visual Management” Recorded in the RevenueBase company graph · Sep 19, 2026 · View company records in RevenueBase
18	Plantscapers, INC	Exact match	Irvine, CA, United StatesHQ recorded Sep 19, 2026	11-50	15 contacts →
	Exact match Recorded description not available. Recorded in the RevenueBase company graph · Sep 19, 2026 · View company records in RevenueBase
19	IMA Design	Exact match	Irvine, CA, United StatesHQ recorded Sep 19, 2026	11-50	14 contacts →
	Exact match “ima creates exceptional spaces that give form and character to the landscape, providing distinctive artistry and economic value for our clients.” Recorded in the RevenueBase company graph · Sep 19, 2026 · View company records in RevenueBase
20	TD Architects, INC	Exact match	Irvine, CA, United StatesHQ recorded Sep 19, 2026	1-10	12 contacts →
	Exact match “ABOUT US TD Architects, Inc.” Recorded in the RevenueBase company graph · Sep 19, 2026 · View company records in RevenueBase
21	Land Concern	Exact match	Irvine, CA, United StatesHQ recorded Sep 19, 2026	11-50	11 contacts →
	Exact match “At Land Concern, our mission is to provide exceptional landscape architecture services for master-planned communities, commercial developments, and hospitality projects.” Recorded in the RevenueBase company graph · Sep 19, 2026 · View company records in RevenueBase
22	Lynn Capouya, Inc. Landscape Architects	Exact match	Irvine, CA, United StatesHQ recorded Sep 19, 2026	11-50	10 contacts →
	Exact match “Lynn Capouya, Inc.(LCI) founded in 1979 is a full service landscape architectural design firm specializing in sustainable landscape design for both public and private market…” Recorded in the RevenueBase company graph · Sep 19, 2026 · View company records in RevenueBase
23	GAA Architects, INC	Exact match	Irvine, CA, United StatesHQ recorded Sep 19, 2026	11-50	10 contacts →
	Exact match “Established in 1978, and under new ownership since 2005, GAA Architects is an architecture, planning, and interior design firm uniquely qualified to design and master plan office…” Recorded in the RevenueBase company graph · Sep 19, 2026 · View company records in RevenueBase
24	Rost Architects	Exact match	Irvine, CA, United StatesHQ recorded Sep 19, 2026	1-10	9 contacts →
	Exact match “Contemporary Architecture and Interior Design firm based in Orange County California.” Recorded in the RevenueBase company graph · Sep 19, 2026 · View company records in RevenueBase
25	Knitter Partners International	Exact match	Irvine, CA, United StatesHQ recorded Sep 19, 2026	11-50	8 contacts →
	Exact match “Knitter Partners International (KPI) is a full service Architectural and Planning firm established in 1980.” Recorded in the RevenueBase company graph · Sep 19, 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 “environmental design 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 53 environmental design firms based in Irvine, United States

See the full list, filter by size, metro and specialty, and access 1,352 tracked professional contacts with verified work emails. Direct dials are available where recorded.

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Environmental design firms based in Irvine, United States at a glance

As of Sep 19, 2026

52.3%Verified-email coverage

48.8Average contacts per company

11-50Median size (employees)

Sep 19, 2026Page data refreshed

Companies by employee count

1-10

11-50

51-200

201-500

501-1,000

Email recency for this list is measured across the whole United States list rather than for Irvine, so it is reported there. Company counts and contact totals on this page are exact for Irvine, over 53 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 Irvine, United States whose business descriptions match “environmental design 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 1,352 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 September 19, 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.

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

How many environmental design firms are there based in Irvine, United States?

RevenueBase identified 53 company matches for environmental design firms associated with Irvine, United States as of September 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?

Lpa, INC 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 environmental design firms?

New York leads the United States with 553 company records, followed by Los Angeles (272) and Chicago (205). Irvine has 53.

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 1,352 professional contacts with verified work emails tracked across these 53 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 September 19, 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.