San Marino · Land use · Apartment building
Where is an apartment building (multifamily housing) allowed in San Marino?
In San Marino, an apartment building (multifamily housing) is allowed in 4 base zones (RM1, RIH, MU-1 and MU-2) (San Marino use tables, read October 2026).
Key points
- Allowed: RM1, RIH, MU-1 and MU-2
Find your lot's zone on the city zoning map, then read its row. Every status below was read from the San Marino Municipal Code use tables (read October 2026). Base zones only. General information, not legal advice — check with the city before you apply.
Zones where an apartment building (multifamily housing) can go
San Marino's code calls this use “Multi-family dwelling units”. Each row links to the use table it comes from. A zone marked “see note” has a condition in the code, for example upper floors only or a larger lot.
| Zone | Status | Code |
|---|---|---|
| RM1 | Allowed | § 23.20.02 |
| RIH | Allowed | § 23.20.02 |
| MU-1 | Allowed | § 23.21.02 |
| MU-2 | Allowed | § 23.21.02 |
What else applies
- State law: State laws such as AB 2011, SB 6 and the density bonus law can allow homes on some commercial sites, or more units than this table shows.
- Not covered here: R-1 has a use list (S1), not a table; only the single-family dwelling is read from it; P&R (S2) and H&C (S3) have short use lists; C-1 Commercial Zone and any other commercial or area districts: no use table in the packet. Overlay zones and specific plans can also change the answer.
Other uses in San Marino
Who this affects
Frequently asked questions
Can I have an apartment building (multifamily housing) in the RM1 zone in San Marino?
Yes. San Marino's use table lists it as allowed in RM1 (§ 23.20.02).
General information, not legal advice.
Ask about an apartment building (multifamily housing) at an address in San Marino
Ask GoCodebook what the zoning at a specific address allows and get an answer that cites the section.
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