- EDSA
 - Santa Monica - International planning, landscape architecture, and graphic design firm with expertise in resorts, planned communities, public sector, and entertainment projects. - EPT
- Pasadena - Providing planning and urban design services.
- Lawrence R. Moss and Associates
- Glendale - Southern California landscape architecture firm.
- Lost West
- Offers public and private landscape architecture as well as landscape construction and maintenance.
- Marcia Babalas Landscape Design
- Urban design, commercial, residential, and corporate landscapes.
- Tua, Inc.
- West Covina - Specialises in Japanese garden design, suatainable landscape design and environmental planning.
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