Mill Valley · Land use · Rooming or boarding house
Where is a rooming or boarding house allowed in Mill Valley?
In Mill Valley, a rooming or boarding house is needs a conditional use permit in 6 (RM-3.5, RM-B, RM-M, RM-PA, RM-P and 1 more) (Mill Valley use tables, read October 2026).
Key points
- Needs a permit: RM-3.5, RM-B, RM-M, RM-PA, RM-P and DR
Find your lot's zone on the city zoning map, then read its row. Every status below was read from the Mill Valley Municipal Code use tables (read October 2026). Base zones only. General information, not legal advice — check with the city before you apply.
Zones where a rooming or boarding house can go
Mill Valley's code calls this use “Single room occupancy (SRO) dwellings”. 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 |
|---|---|---|
| RM-3.5 RM-3.5 Multiple Family | Needs a conditional use permit | § 20.24.020 |
| RM-B Bayfront (En. Knolls/Shelter Ridge) | Needs a conditional use permit | § 20.24.030 |
| RM-M Miller Ave Marsh | Needs a conditional use permit | § 20.24.030 |
| RM-PA Miller Ave Passage | Needs a conditional use permit | § 20.24.030 |
| RM-P Miller Ave Parkway | Needs a conditional use permit | § 20.24.030 |
| DR Downtown Residential | Needs a conditional use permit | § 20.26.020 |
What else applies
- Not covered here: C-R (S12: planned unit development list only), C-F (S14: every use needs a CUP except public schools; § 20.55.025 prohibited uses not in packet) and U (S17: all uses need a CUP): no per-use cells used. Chapter 20.24 RM-3.5 prohibitions beyond the lists are not stated.. Overlay zones and specific plans can also change the answer.
Other uses in Mill Valley
Who this affects
Frequently asked questions
Can I have a rooming or boarding house in the RM-3.5 zone in Mill Valley?
Only with a conditional use permit. Mill Valley's use table lists it that way in RM-3.5 (RM-3.5 Multiple Family) (§ 20.24.020).
General information, not legal advice.
Ask about a rooming or boarding house at an address in Mill Valley
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