Kimley-Horn expands its San Diego footprint as infrastructure and private development demand rises regionally

Consulting firm adds capacity in a region shaped by transportation, water, and development projects

Kimley-Horn, a national engineering, planning, and design consulting firm, is expanding an already sizable presence in San Diego County as demand remains strong across public infrastructure and private development work. The firm maintains offices in Downtown San Diego and Escondido, reflecting a strategy of serving both urban project hubs and North County growth areas.

The company’s Downtown San Diego office is located at 401 B Street, positioning staff near major civic agencies, transportation stakeholders, and project teams tied to the region’s dense employment centers and redevelopment zones. Its Escondido location extends proximity to North County municipalities and development corridors, where land planning, utilities, and roadway work frequently move in parallel with housing and commercial growth.

Local project mix shows focus on mobility, entitlements, and utilities

The firm’s published San Diego-area work spans transportation and site-development assignments. In the Del Sur area, Kimley-Horn provided advisory, approvals, and construction-phase services for the Del Sur Town Center retail project, including grading, drainage, utilities, water-quality elements, and retaining wall design associated with phased construction.

On the public infrastructure side, the firm has worked on the I-5/Genesee Avenue Interchange, which involved environmental clearance coordination, accelerated design delivery, bridge replacement and widening, ramp realignments, and bicycle and pedestrian facilities. The project has received multiple industry recognitions dating to 2019, highlighting its prominence within regional mobility upgrades.

Kimley-Horn has also been involved in conceptual, preliminary, and final design work connected to San Diego’s Blue Line corridor station reconstruction between Barrio Logan and San Ysidro, an effort focused on accessibility, station circulation, and multimodal improvements across multiple stations while maintaining active transit service.

Growth approach: wider service lines and hiring to meet market demand

The firm describes its San Diego capabilities as multidisciplinary, listing areas that include development and entitlement services, transportation and roadways, landscape architecture, water and wastewater utilities, structural engineering, transit and rail, and community infrastructure and resilience. Recent recruiting materials for San Diego-based roles indicate continued staffing needs tied to local delivery capacity.

• San Diego County offices: Downtown San Diego and Escondido
• Primary local work types: transportation design, transit station reconstruction, private development entitlements and utilities
• Operational signals: continued hiring for San Diego-based positions

Kimley-Horn’s San Diego-area portfolio points to a combined emphasis on mobility projects and development-support services—two areas closely linked to the region’s long-term housing and infrastructure planning timelines.

Nationally, Kimley-Horn reports a workforce approaching 10,000 employees and more than 150 offices in North America, scale that can be leveraged for large programs while maintaining local teams for day-to-day project coordination in San Diego.