Tatsumi and Partners, Inc. was established in 1985 and has served the Southern California transportation market since 1992. The firm has earned a strong reputation as one of the premier transportation-focused landscape architecture firms in the region.

Based in Irvine, the firm’s office is staffed by experienced professionals with expertise in landscape aesthetics, design, irrigation system design and analysis, public outreach, liability risk management, and water management. The team brings decades of experience in transportation-related projects, with a focus on maintenance, safety, and cost-effectiveness.

Over the past 30 years, Tatsumi and Partners has consistently delivered high-quality design solutions tailored to the specific needs of transportation agencies such as Caltrans, METRO, the Orange County Transportation Authority (OCTA), Riverside County Transportation Department, Riverside County Transportation Commission, and the North County Transit District. By combining creativity, technical proficiency, and a proven management approach, the firm has become a recognized leader in transportation-related landscape architecture. Their services include Visual Impact Assessments, planting concepts, PS&E for planting and irrigation (standard and fast-tracked design-build projects), construction administration, and preparation of as-built documentation.