Central · San Diego County

ADU Services in Tierrasanta, CA.

ADUz designs, permits, and builds accessory dwelling units here, with honest feasibility and bilingual service from start to finish.

Tierrasanta's 1970s and 80s single-family tract homes sit on real lots with real yards, and that housing stock is exactly where ADUs pencil out best. The military and civilian families who planted roots here decades ago are now looking at how to house an aging parent or bring in rental income without leaving the community they built their lives in.
Local context

Building an ADU in Tierrasanta

Along Santo Road, off Mission Gorge Road, and tucked into the hills backing up to Mission Trails Regional Park, Tierrasanta homeowners are sitting on some of the most ADU-ready lots in the City of San Diego. The "Island in the Hills" is 75 percent single-family, with a housing stock that was built out in the 70s and 80s on master-planned parcels that typically have usable side or rear yard space. That combination, mature lots plus strong neighborhood demand, is exactly why families here are calling ADUz. Some are housing a parent. Others are converting underused space into a rental that offsets their mortgage. A few are planning ahead for adult kids who want to stay close but need their own front door. ADUz handles design, permits, and construction for homeowners throughout Tierrasanta, and we know the City of San Diego's ADU process well enough to get you through it without the runaround.

Tierrasanta falls inside City of San Diego jurisdiction, not the county, so your ADU permit goes through the City's Development Services Department. That matters because San Diego has invested in streamlining its ADU process, and standard detached ADUs on single-family lots can move through plan check faster than many neighboring jurisdictions. The typical Tierrasanta lot is a slab-foundation ranch or two-story from the 70s or 80s with a rear yard that backs up to either a neighbor or open space near Mission Trails. Most of those yards can support a detached ADU in the 400 to 800 square foot range depending on setbacks and lot coverage limits. If the rear yard is tight, a junior ADU conversion inside the existing home is often a cleaner path. Garage conversions are also popular here, especially on homes along the Clairemont Mesa Boulevard corridor where the garage faces the street and the rear yard stays private. ADUz will pull your assessor records and walk the lot before we draw anything, so you know what's actually buildable before spending a dollar on plans.

Neighborhoods we serve in Tierrasanta: Tierrasanta · Mission Trails Interface · Santo Road Corridor · Clairemont Mesa Boulevard Corridor · Mission Gorge Road Corridor · Friars Road Approach · North Tierrasanta

Pricing

How much does an ADU cost in Tierrasanta?

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 Tierrasanta. No surprise line items, and the price is confirmed before anything gets built.

Tierrasanta FAQs

What do Tierrasanta homeowners ask?

What does it cost to build an ADU in Tierrasanta?

A detached ADU in Tierrasanta typically runs somewhere between $180,000 and $350,000 depending on size, finish level, and site conditions. Garage conversions and junior ADUs inside the existing home tend to come in at the lower end because you're working with existing structure. ADUz gives you a real number after a site visit, not a guess off a square footage calculator.

How long does the ADU permit process take in the City of San Diego?

For a standard detached ADU, City of San Diego plan check can take anywhere from a few weeks to a few months depending on how complex the project is and current department volume. Construction after permit approval typically adds four to eight months. ADUz submits complete, code-compliant drawings the first time, which cuts down on correction cycles that drag out timelines.

What kind of ADU actually fits a Tierrasanta lot?

Most Tierrasanta single-family homes from the 70s and 80s have enough rear yard to support a detached ADU in the 400 to 650 square foot range, which is the sweet spot for a one-bedroom rental or in-law suite. Homes with attached two-car garages are also strong candidates for a junior ADU conversion inside the home's footprint. ADUz looks at your specific lot before recommending a direction, because what works on Santo Road may not work on a lot that backs to the Mission Trails fire perimeter.

Service area

Where we work in Tierrasanta

We serve Tierrasanta and the surrounding area daily.

Serving Tierrasanta

Thinking about an ADU in Tierrasanta?

Tell us your address and your goal. We'll tell you what's possible, in English or Spanish.