Costello Kennedy Landscape Architecture

Costello Kennedy Landscape Architecture is a full-service landscape architecture firm located in Marin County, California.

Architecture and Planning

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Headquarters: San Rafael, California, United StatesSource: RevenueBaseRetrieved October 13, 2026
Employee range: 1 to 10Source: RevenueBaseRetrieved October 13, 2026
Founded: 2004Source: RevenueBaseRetrieved October 13, 2026
Published list appearances: 1 supported appearance ↗Source: RevenueBase lists

The company at a glance

What does Costello Kennedy Landscape Architecture do?

Its local work spans Marin, Sonoma, the Peninsula, and the Greater San Francisco Bay Area. The firm also has work throughout the United States and internationally.

Based on the company’s public LinkedIn information, supplied through RevenueBase.

Who it serves

The firm provides landscape design services for residential, cultural, commercial, housing, resort, and educational projects.

What the business offers

Services & capabilities.

Landscape design

The firm provides landscape design for residential, cultural, commercial, housing, resort, and educational projects.

Source: LinkedIn company description · Retrieved October 13, 2026

Explore the business in context

Company lists.

Supported appearances on published RevenueBase lists, including available memberships beyond displayed rankings.

#17OF 18

San Rafael

Architectural firms

Snapshot: September 5, 2026

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Costello Kennedy Landscape Architecture

#17 Architectural firms

Snapshot: September 5, 2026

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Sources & data notes.

RevenueBase prepared this profile from the company’s public LinkedIn information and RevenueBase company data. These source records were retrieved on October 13, 2026. AI helped summarize these sources, with a separate automated check against the source text completed on November 1, 2026. Directory positions use company-contact counts from separate saved list snapshots dated September 5, 2026. How the company lists are built.

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