Tierrasanta ADU Cost & Builders — 2026
Detached Tierrasanta ADU builds run $210K–$525K all-in ($399–$578/sq ft) once permits, SDC, utility hookups, and finishes are stacked. Compare costs, zoning, rental income, and pull 3 verified quotes below.
Tierrasanta ADU Costs by Build Type
Pricing is derived from the San Diego city average adjusted for Tierrasanta's premium cost tier (1.05× baseline).
| Build type | 2026 cost range | Notes |
|---|---|---|
| Detached new build | $210K–$525K | Stand-alone backyard unit, 600–1,000 sq ft |
| Attached addition | $179K–$446K | Bumped off existing structure |
| Garage conversion | $95K–$236K | Existing shell reused |
| Basement / interior | $116K–$289K | Where lot type permits |
Tierrasanta ADU Rental Income (2026)
Average rents tracked from San Diego MLS, Zillow, and local rental data. ADUs typically command a 5–15% premium over comparable units due to newer construction.
| Unit type | Monthly rent | Annual gross |
|---|---|---|
| 1 bedroom | $2,000–$2,700 | $24K–$32K/yr |
| 2 bedroom | $2,700–$3,400 | $32K–$41K/yr |
Get 3 free quotes from verified Tierrasanta ADU builders
We'll match your lot details with up to 3 builders who have completed ADU projects in or near Tierrasanta. No cost. No obligation. Typical response within 48 hours.
Get 3 free quotes from vetted San Diego ADU builders
No spam. No obligation. Avg response time: 1 business day.
We never sell your data. You control which builders contact you.
Tierrasanta Zoning, HOA & Historic Notes
- Community plan / overlay
- Tierrasanta Community Plan
- Permit considerations
- City of San Diego, Tierrasanta Community Plan. Canyon-adjacent lots may hit brush-management / fire setbacks; otherwise a standard ADU process.
- HOA situation
- Mostly single-family with some HOA tracts; usable lot sizes are good for detached ADUs.
Always pull a property profile on your specific lot before designing — setbacks, height limits, and FAR can change parcel-by-parcel inside Tierrasanta.
Tierrasanta ADU FAQs
How much does an ADU cost in Tierrasanta, San Diego?
Tierrasanta ADUs typically run $210K–$525K all-in for a 600–1,000 sq ft detached unit in 2026. Costs trend above the San Diego city average due to higher land values and finish expectations. Per square foot pricing is typically $380–$550.
Are there special permits or overlays for ADUs in Tierrasanta?
City of San Diego, Tierrasanta Community Plan. Canyon-adjacent lots may hit brush-management / fire setbacks; otherwise a standard ADU process. Always pull a property profile before designing — Tierrasanta's Tierrasanta Community Plan can change setback and height requirements lot-by-lot.
What can I rent a Tierrasanta ADU for?
As of 2026, Tierrasanta commands roughly $2,000–$2,700 for a 1-bedroom ADU and $2,700–$3,400 for a 2-bedroom. Rents lean higher with off-street parking, in-unit laundry, and walkability to transit or commercial corridors.
Are HOAs or historic districts an obstacle in Tierrasanta?
Mostly single-family with some HOA tracts; usable lot sizes are good for detached ADUs.
How do I get a quote from a verified Tierrasanta ADU builder?
Submit your lot details using the quote form on this page. We'll match you with up to 3 Tierrasanta-area builders who have completed projects within 5 miles. There's no cost or obligation, and quotes typically arrive within 48 hours.
Related San Diego ADU Resources
Ready to price your Tierrasanta ADU?
Submit your lot details and we'll match you with up to 3 verified builders in your area. Quotes typically arrive within 48 hours.
Get My Free Quotes →