Solana Beach pre-approved ADU plans
Solana Beach's Pre-Approved ADU (PADU) program lets designers get detached ADU plans approved once, so owners can reuse them with a streamlined, lower-cost review, subject to site-specific considerations. Here's how it works, from the Solana Beach PADU Processing Guide.
What a PADU plan is
| Type | Detached ADU; may include configuration options |
|---|---|
| Floor area | 800 sq ft maximum |
| Height | 16 ft maximum, from the lower of pre-existing or proposed grade |
| Sprinklers | Plans include a sprinkler system, with a note that sprinklers aren't required where the existing house has none |
| Where | Residential and mixed-use zones with existing single-family or multifamily homes |
Using one
- Unmodified: email the building permit application to counter@cosb.org with the plan
- Modified: standard building permit review
Site conditions such as sensitive habitat, steep slopes or fire mitigation can still require extra reports. The city encourages owners to call Planning at (858) 720-2440 before starting.
Fees
Plan check fees cover Planning, Engineering and Fire review; permit issuance fees cover inspections. Other fees may apply: state, regional, school, water district, impact and covenant recording. Staff confirm them at consultation.
For designers
A preliminary PADU meeting is required before submittal (email counter@cosb.org, subject "Preliminary pre-approved PADU plans meeting request"). Review takes about 15 days per cycle for complete plans. Approved plans are listed on the city site and must be refiled when codes change.
Our role
We check whether a listed plan fits your lot, its grading and its utilities, then build it with verified, licensed contractors.
What a PADU plan includes
- Architectural plans, sections and details
- Height up to 16 ft from the lower of existing or proposed grade; floor area up to 800 sq ft
- Structural plans and calculations, with truss calcs possibly deferred
- Seismic, special inspection and Title 24 documentation
- An automatic fire sprinkler system, with a note that sprinklers aren't required where the house has none
Review time
The guide estimates about 15 days per review cycle for designers' plan approval, based on complete submittals. Approved plans are listed on the city website with the designer's contact information.
Also checked Oct 14, 2026: Solana Beach PADU Processing Guide.
Sources, checked Oct 14, 2026: Solana Beach PADU Processing Guide.
FAQ
What is a PADU?
A detached ADU design pre-approved by the City of Solana Beach, which the city lists on its website so owners can use it with a streamlined review subject to site conditions.
What size are PADU plans?
Up to 800 sq ft and 16 ft high, measured from the lower of pre-existing or proposed grade.
What if I change a PADU plan?
A modified plan goes through the standard building permit review, which may take longer.