| Table of Contents |
| 1. Introduction |
2. Key ADU Policy Changes in San Diego |
2.1 Rollback of the ADU Bonus Program |
2.2 Continued Support for ADU Development |
2.3 Updated Regulations for Junior ADUs (JADUs) |
| 3. How Much Does an ADU Permit Cost in San Diego? |
| 4. Benefits of Building a Permitted ADU |
| 5. FAQ |
Introduction
Key ADU Policy Changes in San Diego
1. Rollback of the ADU Bonus Program
In March 2025, the San Diego City Council voted 6-3 to roll back the ADU Bonus Program in certain single-family zones.This program, implemented in 2020, allowed property owners to build multiple ADUs by designating some as affordable housing.The rollback affects zones with larger lot sizes, such as RS-1-1 to RS-1-11, due to concerns about traffic, parking, and neighborhood aesthetics.
2. Continued Support for ADU Development
Despite the rollback, several development-friendly policies remain active:
Density Bonus Program: Allows additional ADUs in exchange for affordable housing commitments.
Complete Communities Program: Encourages higher-density development in urban areas.
Transit Priority Areas (TPAs): Waives parking requirements for ADUs located near transit hubs.
3. Updated Regulations for Junior ADUs (JADUs)
JADUs must now be converted from existing space within the primary residence and require owner occupancy. They cannot be built inside detached garages or other ADUs.
How Much Does an ADU Permit Cost in San Diego?
The cost of obtaining an ADU permit in San Diego varies based on size, location, and utility requirements. Below is a detailed cost breakdown:
| ADU Size (sqft) | Plan Check Fee | School Impact Fee | Water Capacity Fee | Sewer Capacity Fee | Building Permit Fee | Total Estimated Cost |
|---|---|---|---|---|---|---|
| Up to 499 | $1,414 | $0 | $1,524 | $2,577 | $1,451 | $7,626 |
| 500–749 | $1,837 | $3,056 | $1,524 | $2,577 | $1,725 | $11,379 |
| 750–999 | $2,262 | $4,076 | $1,524 | $2,577 | $2,000 | $13,099 |
| 1,000–1,199 | $2,602 | $4,892 | $1,524 | $2,577 | $2,220 | $17,990 |
Benefits of Building a Permitted ADU
Constructing a permitted ADU in San Diego offers numerous advantages:
Additional Rental Income: Generate passive income by renting out the ADU.
Multigenerational Living: Provide separate living spaces for family members.
Increased Property Value: Enhance the market value of your property.
Flexible Usage: Utilize the ADU as a home office, guesthouse, or studio.
Affordable Housing Contribution: Help address the city's housing shortage.
