Title 8 — ZONING & DEVELOPMENT CODE
Chapter 8.64 — O, OFFICE DISTRICTS
San Mateo County Zoning Code · 2026-06 edition · ingested 2026-07-06 · San Mateo County
8.64.010 - Regulations for “O” Districts. ¶
The following regulations shall apply in all “O” Districts and shall be subject to all applicable provisions of Article 2 (Development Procedures) and Article 3 (General Development Standards) of Title 8..
8.64.020 - Uses Permitted. ¶
(a) All uses permitted in R-1 and R-2 Districts, except animal fanciers and catteries. A use permit, as provided in Chapter 8.280 of Title 8, shall be required for any use which requires a use permit in an R-1 District, except that no new single-family structures shall be permitted. Single-family structures existing at the time of the adoption of this Chapter may be replaced if destroyed or damaged.
(b) Multiple-family dwellings and dwelling groups.
(c) The following uses subject to the securing of a use permit in each case as provided in Chapter 8.280 of this Title 8.
Offices.
Medical and dental clinics.
Prescription pharmacies in connection with medical offices providing there is no exterior entrance.
(Prior Code § 6246(a); Ord 3436 – 11/10/92 )
8.64.030 - Development Standards. ¶
(a) Front, side and rear yard setbacks, height limitation and maximum lot coverage shall conform to the requirements of the combined “S” District.
(b) The required front yard setback shall not be used for parking area. There shall be no storage or parking of commercial or industrial vehicles on the site except for the purpose of loading or unloading.
(c) Buildings may not be used for residential and non-residential use at the same time.
(d) No sales or merchandising shall be permitted except for prescription pharmacies. There shall be no display of merchandise or products whether in a display window or in any other manner visible from the exterior of any building.
(e) There shall be no storage, warehousing, handling, processing or assembling of merchandise or products, except as specifically provided for herein.
(f) There shall be no on-site advertising; provided, however, that a single non-illuminated sign may be used to identify an office building if the sign does not extend above the cornice or eaves and is not freestanding. The sign shall be limited in size to an area of two (2) square feet per office or suite of offices, but shall not exceed a total area of twenty (20) sq. ft. In addition, each office or suite of offices may have an identification sign not exceeding one (1) sq. ft. in area, placed flat against the building.