Title 8 — ZONING & DEVELOPMENT CODE

Chapter 8.32 — R3-A, AFFORDABLE HOUSING DISTRICT

San Mateo County Zoning Code · 2026-06 edition · ingested 2026-07-06 · San Mateo County

8.32.010 Regulations for R3-A Districts.

The following regulations shall apply in all “R-3-A” Districts and shall be subject to all applicable provisions of Article 2 (Development Procedures) and Article 3 (General Development Standards) of Title 8.

8.32.020 Purpose.

The purpose of the “R-3-A” District is to provide opportunities for low and moderate income households within new residential developments on designated sites.

8.32.030 Uses Permitted.

  • (a) A use permit, as provided in Chapter 24 of this Part, shall be required for all uses in “R-3-A” Districts.

  • (b) The granting of a use permit as required in Section 8.32.030(a) shall be based on the required finding, in addition to those specified in Chapter 8.280 of Title 8, that the residential development complies with Policies 3.19, 3.28, and 3.29 of the Local Coastal Plan Housing Component.

  • (c) Prior to granting a use permit for any parcel, the granting authority shall require the owner of that parcel to submit for approval a development plan for that parcel. The development plan shall show: property lines; streets and parking; building sites and all proposed structures; building elevations; the number, size, location, and method of financing of affordable housing units; landscaping plans, recreation facilities; and the reserved open space.

Development shall be permitted in phases, but future development shall conform to the approved development plan.

  • (d) The following uses shall be permitted in the “R-3-A” District:

    1. One-family dwellings.

    2. Multiple-family dwellings.

    3. Accessory buildings and accessory uses appurtenant to a residential use; provided, however, that such accessory buildings shall not be constructed until the main building shall have been constructed.

    4. Institutional facilities including but not limited to the following:

      • a. Community centers.

      • b. Day care centers.

(Prior Code § 6182, 6183, 6184; Ord 2773 – 04/06/83)

(Prior Code § 6184(d)5; Ord 3791 – 10/21/97)

(Prior Code § 6184(d)5; Ord 4844 – 05/03/21)