Snapshot
Population
12,216
US Census ACS, 2024 / FBI UCR Table 8, 2024
Median home price
$3,448,718
Redfin, 2026-08
Median rent
$3,501/mo
US Census ACS, 2024
Crime / 1k
12.1
FBI UCR Table 8, 2024
Market
Price / sq ft
$1,113
Redfin, 2026-08
Months of supply
3.4
Redfin, 2026-08
Median days on market
27
Redfin, 2026-08
Renter-occupied
17.2%
US Census ACS, 2024
Median household income
$214,167
US Census ACS, 2024
Housing units
4,439
US Census ACS, 2024
Developments
No tracked developments for San Marino yet.
What you can build here — ADU
Typical SFR: 1 conversion + 1 detached ADU + 1 JADU. Size: detached up to 1,200 SQFT; attached 50% of primary (min 150, max 1,200 SQFT). Height: detached 16 ft / 1 story (18 ft near transit or multifamily multistory); attached up to 25 ft or primary/zone limit (max 2 stories). Side/rear setback 4 ft. JADU max 500 SQFT. State fee exemptions apply. 60-day ministerial clock.
§23.02.25. Last verified 2026-08-18. Not legal advice — confirm current requirements with San Marino's planning department. See the statewide ADU floor every city sits on top of.
What you can build here — zoning standards
| Zone(s) | Density | Height | Setbacks F / S / R | Lot coverage | |
|---|---|---|---|---|---|
| Single-family | R-1 districts (IE–VII) | 1 du/lot | 30–35 ft | 25–40' / 5–20' / 25–40' | 18–40% (varies) |
| — | — | — | (by district) | ||
| Duplex | Limited; primarily SF | — | — | — | — |
| Townhome | Limited multi-family in C-1 | Limited | — | — | — |
| Multifamily | C-1 (min 5,000 sf/family) | Very limited | — | — | — |
Parking · Bedroom-based parking; landscaping required in yards.
Overlays to check · SB 9 lot-split eligible · Density Bonus Law applicable
Base zoning — always check for a project-specific overlay or density-bonus increase. Not legal advice. San Marino Municipal Code Art 02; Residential Plan Information Sheet; Housing Element Table 24. Last verified 2026-08-23. Full zoning code
Advisory Desk
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