Lake Forest · Land use · Apartment building
Where is an apartment building (multifamily housing) allowed in Lake Forest?
In Lake Forest, an apartment building (multifamily housing) is allowed in 2 base zones (R2 and R4, all with a condition) and needs a permit in 5 (RP, MU 32, MU 43, UI 25 and UI 43) (Lake Forest use tables, read October 2026).
Key points
- Allowed: R2 and R4
- Needs a permit: RP, MU 32, MU 43, UI 25 and UI 43
Find your lot's zone on the city zoning map, then read its row. Every status below was read from the Lake Forest 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
Lake Forest's code calls this use “Multifamily 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 |
|---|---|---|
| R2 R2 Multifamily Dwellings District | Allowed — see note Note 5 or more units: Principal uses subject to a site development permit (S14): "Multifamily dwellings with five or more dwelling units (except condominium, stock cooperative, and community apartment projects as permitted by Section 9.146.070)" | § 9.56.020 |
| R4 R4 Suburban Multifamily Residential District | Allowed — see note Note 5 or more units: Principal uses subject to a site development permit (S20): "Multifamily dwellings with five or more dwelling units (except condominium, stock cooperative, and community apartment projects) as permitted by Section 9.146.070" | § 9.64.020 |
| RP RP Residential-Professional District | Needs an use permit | § 9.68.040 |
| MU 32 | Needs a site development permit | § 9.73.065 |
| MU 43 | Needs a site development permit | § 9.73.065 |
| UI 25 | Needs a site development permit | § 9.73.065 |
| UI 43 | Needs a site development permit | § 9.73.065 |
What else applies
- R2 and R4 split by size: 4 or fewer units permitted; 5 or more units site development permit (§ 9.56.030, § 9.64.030). Condominium, stock cooperative and community apartment projects need a use permit in R2 and R4 (§ 9.56.040 E, § 9.64.040 E).
- 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: PD Planned Development (no table); MUO (see zones). Overlay zones and specific plans can also change the answer.
Other uses in Lake Forest
Who this affects
Frequently asked questions
Can I have an apartment building (multifamily housing) in the RP zone in Lake Forest?
Only with an use permit. Lake Forest's use table lists it that way in RP (RP Residential-Professional District) (§ 9.68.040).
Can I have an apartment building (multifamily housing) in the R2 zone in Lake Forest?
Yes, with a condition. Lake Forest's use table lists it as allowed in R2 (R2 Multifamily Dwellings District) (§ 9.56.020). The code adds a condition: “Principal uses subject to a site development permit (S14): "Multifamily dwellings with five or more dwelling units (except condominium, stock cooperative, and community apartment projects as permitted by Section…”
General information, not legal advice.
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