Mammoth Lakes · Land use · Senior or assisted living
Where is senior housing or assisted living allowed in Mammoth Lakes?
In Mammoth Lakes, senior housing or assisted living is allowed in 2 base zones (OMR and MLR, 1 with a condition), needs an use permit in 2 (RMF-1 and RMF-2) and not allowed in 3 (Mammoth Lakes use tables, read October 2026).
Key points
- Allowed: OMR and MLR
- Needs a permit: RMF-1 and RMF-2
- Not allowed: RR, RSF and D
Find your lot's zone on the city zoning map, then read its row. Every status below was read from the Mammoth Lakes Municipal Code use tables (read October 2026). Base zones only. General information, not legal advice — check with the city before you apply.
Zones where senior housing or assisted living can go
Mammoth Lakes's code calls this use “Assisted living facility”. 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 |
|---|---|---|
| OMR | Allowed — see note Note 1: Limited to no more than 75 percent of the ground floor area when located along primary and secondary active frontages. A minimum of 25 percent of the ground floor area shall be occupied by uses permitted by right or by administrative permit (i.e., active uses) and shall occupy the building or structure's frontage for a minimum depth of 20 feet (administrative permit required for depths less than 20 feet). | § 17.24.020 |
| MLR | Allowed | § 17.24.020 |
| RMF-1 | Needs an use permit | § 17.20.020 |
| RMF-2 | Needs an use permit | § 17.20.020 |
Zones where it is not allowed
What else applies
- 'Convalescent home' (OMR U) and 'Residential care facility' are separate rows.
- State law: A licensed care home for six or fewer residents is a residential use under state law (Health and Safety Code § 1566.3) and is allowed wherever homes are.
- Not covered here: Zone codes for the industrial district and zone names for RR, RSF, RMF, D, OMR, MLR are not in the packet. Open-space, public-facility and specific-plan districts are not in the packet.. Overlay zones and specific plans can also change the answer.
Other uses in Mammoth Lakes
Who this affects
Frequently asked questions
Can I have senior housing or assisted living in the RMF-1 zone in Mammoth Lakes?
Only with an use permit. Mammoth Lakes's use table lists it that way in RMF-1 (§ 17.20.020).
Can I have senior housing or assisted living in the RR zone in Mammoth Lakes?
No. Mammoth Lakes's use table does not allow it in RR (§ 17.20.020).
Can I have senior housing or assisted living in the OMR zone in Mammoth Lakes?
Yes, with a condition. Mammoth Lakes's use table lists it as allowed in OMR (§ 17.24.020). The code adds a condition: “Limited to no more than 75 percent of the ground floor area when located along primary and secondary active frontages. A minimum of 25 percent of the ground floor area shall be occupied by uses permitted by right or…”
General information, not legal advice.
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