SB 1211 for 10-unit apartment in San Diego
Own a 10-unit apartment in San Diego? SB 1211 lets you stack 10 new units on top of your existing 10: 8 detached + 2 interior. At San Diego's median rent of $2,300/mo, that's ~$276K in additional gross annual rent.
The San Diego scenario
Picture the typical case: a 10-unit 10-unit apartment on a San Diego block built between 1955 and 1975, with surface parking that hasn't been fully utilized in years. SB 1211 turns that parking into 8 detached units plus 2 interior conversions — 10 new doors that didn't exist before 2024.
San Diego-specific note: San Diego's ADU Bonus Program allows additional density in transit areas.
Large multifamily (10+ unit) design playbook
A 10-unit complex is capped at 8 detached ADUs by statute, so the play shifts toward interior conversions: max(1, ⌊units × 25%⌋) = 2 additional units carved from common rooms, oversized lobbies, basement storage, or laundry rooms.
Pro-forma snapshot
| Existing units | 10 |
| Detached ADUs (SB 1211) | 8 |
| Interior conversions | 2 |
| Total new units | 10 |
| Median 1BR rent in San Diego | $2,300/mo |
| Est. additional gross rent | $276K/yr |
| Estimated total project cost | ~$2,016K |
| Year-1 NOI estimate | ~$207K |
| Stabilized cap rate at cost | 10.3% |
| Replacement parking required | No (§66313) |
| Approval pathway | Ministerial · §66314 |
| Typical permit timeline in San Diego | 75-110 days |
Get a personalized SB 1211 feasibility report for 10-unit apartment owners in San Diego
3 minutes. We email you a 4-page PDF with your buildable count, parking determination, jurisdiction overlays, and pro-forma.
No spam · free · delivered in 24 hrs