Spacious equestrian and rural-residential lots provide ample room for detached ADUs, strong demand from families drawn to top-rated Capistrano Unified schools, Metrolink commuter rail access, and a unique small-town character that commands premium rental rates in south Orange County.
San Juan Capistrano is one of Orange County's most distinctive cities, anchored by the historic Mission San Juan Capistrano — the birthplace of Orange County — and the surrounding Los Rios Historic District, the oldest continuously occupied residential neighborhood in California. The city's rural-residential character sets it apart from the master-planned communities to the north, with equestrian-zoned neighborhoods featuring generous lots of 10,000 to 20,000+ square feet along streets like Paseo Adelanto and Calle Arroyo. The annual Return of the Swallows celebration draws visitors each March, and the Capistrano Depot anchors a walkable downtown with independent restaurants and galleries. San Juan Capistrano sits along the Metrolink Orange County Line, providing commuter rail access to Irvine, Laguna Niguel, and Los Angeles. Major employers in the surrounding area include the Capistrano Unified School District, St. Margaret's Episcopal School, and the equestrian and agricultural industries that define the local economy.
Confirm your property's zoning on the city's GIS map. Check whether your parcel falls within the Historic Town Center Plan, Los Rios Historic District, or an equestrian overlay zone — each may carry additional objective design standards for ADUs.
Create architectural plans including site plan, floor plan, elevations, structural, mechanical, electrical, and plumbing. For equestrian properties, show existing structures (stables, arenas) and riding easements. In the Historic District, design facades to complement the adobe and early-California architectural character.
Submit your complete plan set to the Development Services Department. Include Title 24 energy compliance, soils report (especially important in hillside areas near Ortega Highway), and any required septic or sewer connection documentation.
The city reviews plans for compliance with building codes and ADU regulations. State law mandates a 60-day maximum review period for compliant ADU applications. Historic District properties may require concurrent review by the Cultural Heritage Commission under objective standards only.
Once permitted, begin construction with your licensed contractor. Schedule required inspections at each milestone — foundation, framing, rough mechanical/electrical/plumbing, insulation, and final. Equestrian-area builds should coordinate construction vehicle access to avoid impacting horse trails.
Request final inspection from the Building Division. Once passed, receive your Certificate of Occupancy. Your ADU is now legal to rent or occupy.