ADU Services in San Ysidro, CA.
ADUz designs, permits, and builds accessory dwelling units here, with honest feasibility and bilingual service from start to finish.
Building an ADU in San Ysidro
Along San Ysidro Boulevard and the residential streets near the Blue Line trolley terminus, families have been building multigenerational homes for generations. A permitted ADU is just the modern version of that tradition. San Ysidro has some of the most affordable entry-level home prices left within San Diego city limits, and many of those homes sit on land that can support a backyard unit or a converted garage. The rental demand is real too. Proximity to the international border, the trolley corridor, and Las Americas makes this one of the more active commuter zones in the county, and a well-designed ADU here can produce steady monthly income. ADUz handles the full scope from this side of the border: Alma Sanchez leads design and city permitting, and The Rock Remodel builds. Bilingual team, San Diego-based, licensed under CA contractor law.
San Ysidro falls within the city of San Diego, so permits go through the city's Development Services Department rather than San Diego County. That distinction matters because city timelines and ADU-specific standards differ from what unincorporated county parcels follow. The housing stock here leans toward smaller lots with older single-family homes and multi-family buildings, most built between the 1950s and 1980s. On the tighter lots common near San Ysidro Boulevard and the border zone, an attached addition or garage conversion often makes more sense than a detached backyard unit because setback and lot coverage requirements are easier to satisfy. The residential areas around Beyer Hills and East San Ysidro tend to have slightly more rear yard depth, which opens up more options for a detached unit. ADUz runs a parcel-level feasibility check before any design work begins, so you know what your lot can actually support before spending a dollar.
Neighborhoods we serve in San Ysidro: San Ysidro proper · East San Ysidro · Beyer Hills · Via de San Ysidro corridor · Border zone residential · Las Americas area · Tijuana River Valley edge
How much does an ADU cost in San Ysidro?
Most ADUs in this part of San Diego County land between $150,000 and $400,000, depending on whether it is a garage conversion or a detached new build, the size, and your finishes. We give you an honest range before you commit.
We start with a feasibility check, then give you a clear design and build quote for San Ysidro. No surprise line items, and the price is confirmed before anything gets built.
What services are available in San Ysidro?
Every service we offer is available in San Ysidro. Same family team, same honest pricing as the rest of the county.
What do San Ysidro homeowners ask?
How much does an ADU cost to build in San Ysidro?
A garage conversion or attached ADU in San Ysidro typically runs somewhere between $80,000 and $180,000 depending on size, finish level, and what the existing structure needs. A detached backyard unit with its own foundation and utility connections usually starts closer to $150,000 and can go higher based on complexity. ADUz gives you a realistic range during the feasibility stage, before any money goes toward design.
How long does the permitting process take in San Ysidro?
San Ysidro goes through the city of San Diego's permit process, not the county. A standard ADU permit can take anywhere from 3 to 9 months depending on plan check volume and whether the city requires revisions. ADUz manages the submission and communicates with the city directly, so you're not left navigating the back-and-forth on your own.
What type of ADU fits best on a San Ysidro lot?
Most San Ysidro properties have smaller footprints and older structures, which makes attached additions and garage conversions the most practical starting point. They work within existing setbacks and often avoid the need for new utility connections from the street. For properties in East San Ysidro or the Beyer Hills area with more rear yard space, a detached unit is worth exploring, that's exactly what the feasibility check is designed to figure out.
Other South County communities we serve
Where we work in San Ysidro
We serve San Ysidro and the surrounding area daily.
Thinking about an ADU in San Ysidro?
Tell us your address and your goal. We'll tell you what's possible, in English or Spanish.