SB 1211 for 10-unit apartment in Fremont

Fremont's SB 1211 math for 10-unit apartment owners: 8 detached ADUs (the §66323 cap), plus 2 interior conversions. Total: 10 new homes. At Fremont's median rent of $2,900/mo, that's ~$348K in additional gross annual rent.

10new homes possible
8detached ADUs
2interior conversions
$348Kest. annual rent

The Fremont scenario

Run it as a sequence: stabilize existing 10 units → permit 8 detached ADUs ministerially under §66314 → convert 2 interior spaces into rentable units → re-tenant at Fremont medians.

Fremont-specific note: Tech-corridor rents; high tenant demand.

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 units10
Detached ADUs (SB 1211)8
Interior conversions2
Total new units10
Median 1BR rent in Fremont$2,900/mo
Est. additional gross rent$348K/yr
Estimated total project cost~$2,016K
Year-1 NOI estimate~$261K
Stabilized cap rate at cost12.9%
Replacement parking requiredNo (§66313)
Approval pathwayMinisterial · §66314
Typical permit timeline in Fremont70-115 days

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Other property types in Fremont

Duplex in Fremontup to 3 new homesTriplex in Fremontup to 4 new homesFourplex / 4-unit in Fremontup to 5 new homes5-unit apartment in Fremontup to 6 new homes6-unit apartment in Fremontup to 7 new homes8-unit apartment in Fremontup to 10 new homes12-unit apartment in Fremontup to 11 new homes16-unit apartment in Fremontup to 12 new homes20-unit apartment in Fremontup to 13 new homes24-unit apartment in Fremontup to 14 new homes32-unit apartment in Fremontup to 16 new homes

10-unit apartment owners in other Bay Area cities

10-unit apartment in San Francisco~$372K/yr rent · 90-150 days10-unit apartment in Oakland~$324K/yr rent · 70-120 days10-unit apartment in San Jose~$348K/yr rent · 60-100 days10-unit apartment in Berkeley~$336K/yr rent · 75-130 days10-unit apartment in Hayward~$300K/yr rent · 70-115 days10-unit apartment in Richmond~$288K/yr rent · 70-115 days10-unit apartment in Concord~$288K/yr rent · 70-115 days10-unit apartment in Walnut Creek~$324K/yr rent · 75-120 days10-unit apartment in Santa Rosa~$276K/yr rent · 75-120 days10-unit apartment in Napa~$288K/yr rent · 75-120 days10-unit apartment in Vallejo~$252K/yr rent · 70-110 days10-unit apartment in Fairfield~$252K/yr rent · 70-110 days

Topics relevant to this scenario

Utility hookups for multifamily ADUsImpact fees on SB 1211 ADUsExisting vs proposed buildings under SB 1211Fire code compliance for SB 1211 ADUsSB 1211 and rent controlHOAs and SB 1211Financing multifamily ADUs under SB 1211HCD-approved modular ADUs