La Jolla ADU Cost & Builders — 2026
Detached La Jolla ADU builds run $260K–$650K all-in ($494–$715/sq ft) once permits, SDC, utility hookups, and finishes are stacked. Compare costs, zoning, rental income, and pull 3 verified quotes below.
La Jolla ADU Costs by Build Type
Pricing is derived from the San Diego city average adjusted for La Jolla's premium cost tier (1.30× baseline).
| Build type | 2026 cost range | Notes |
|---|---|---|
| Detached new build | $260K–$650K | Stand-alone backyard unit, 600–1,000 sq ft |
| Attached addition | $221K–$553K | Bumped off existing structure |
| Garage conversion | $117K–$293K | Existing shell reused |
| Basement / interior | $143K–$358K | Where lot type permits |
La Jolla 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 | $2,700–$3,600 | $32K–$43K/yr |
| 2 bedroom | $3,600–$4,800 | $43K–$58K/yr |
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La Jolla Zoning, HOA & Historic Notes
- Community plan / overlay
- Coastal Overlay Zone
- Permit considerations
- City of San Diego AND the Coastal Overlay Zone — a Coastal Development Permit is required, adding 4–10 weeks. San Diego's highest-cost ADU submarket.
- HOA situation
- Many La Jolla enclaves have HOAs and view covenants that restrict ADU height/placement — verify CC&Rs early.
Always pull a property profile on your specific lot before designing — setbacks, height limits, and FAR can change parcel-by-parcel inside La Jolla.
La Jolla ADU FAQs
How much does an ADU cost in La Jolla, San Diego?
La Jolla ADUs typically run $260K–$650K 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 La Jolla?
City of San Diego AND the Coastal Overlay Zone — a Coastal Development Permit is required, adding 4–10 weeks. San Diego's highest-cost ADU submarket. Always pull a property profile before designing — La Jolla's Coastal Overlay Zone can change setback and height requirements lot-by-lot.
What can I rent a La Jolla ADU for?
As of 2026, La Jolla commands roughly $2,700–$3,600 for a 1-bedroom ADU and $3,600–$4,800 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 La Jolla?
Many La Jolla enclaves have HOAs and view covenants that restrict ADU height/placement — verify CC&Rs early.
How do I get a quote from a verified La Jolla ADU builder?
Submit your lot details using the quote form on this page. We'll match you with up to 3 La Jolla-area builders who have completed projects within 5 miles. There's no cost or obligation, and quotes typically arrive within 48 hours.
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