Title 8 — ZONING & DEVELOPMENT CODE
Chapter 8.94 — M2, HEAVY INDUSTRIAL DISTRICTS
San Mateo County Zoning Code · 2026-06 edition · ingested 2026-07-06 · San Mateo County
8.94.010 - Regulations For “M-2” Districts. ¶
The following regulations shall apply in all “M-2” Districts and shall be subject to all applicable provisions of Article 2 (Development Procedures) and Article 3 (General Development Standards) of Title 8.
8.94.020 - USES PERMITTED. ¶
(a) All uses not otherwise prohibited by law except residential and commercial uses; provided that none of the following uses shall be established in any “M-2” District unless and until a use permit in each case, as provided in Chapter 24 of this Part, shall first have been secured for such use:
Distillation of bones.
Drilling for or removal of oil, gas, or other hydrocarbon substances.
Dumping, disposal, incineration or reduction of garbage, sewage offal, dead animals, or refuse.
Fat rendering.
Manufacture or storage of acid, cement, explosives or fireworks, fertilizer, gas, glue, gypsum, lime, or plaster of paris.
Refining of petroleum or its products.
Residential structures for caretaker’s dwelling in connection with uses herein permitted.
Smelting of copper, iron, tin, zinc, or other ores.
Stockyards or slaughtering of animals, and/or poultry.
Tanneries or the storage or curing of raw, green or salted hides or skins.
Junkyards, only when conducted in a building enclosed on all sides, or when enclosed by a solid fence or wall in such a manner as may be specified by the Planning Commission in a use permit under provisions of Chapter 24 of this Part.
Other uses which in the opinion of the Planning Commission are of the same general character as those enumerated in this subsection.
(b) Outdoor advertising structures or signs as defined in Sections 5202 and 5203 of the Business and Professions Code of the State of California.
(c) Exterior signs pertaining to the business uses conducted on the premises and subject to the following limitations:
Signs shall not exceed two hundred (200) square feet in area on one face and not more than five hundred (500) square feet in total area on the premises. Larger areas may be authorized by the use permit in exceptional cases.
Signs shall not project more than one (1) foot beyond the street property line, but if a building is set back from a street property line, then such sign shall not project more than eight (8) feet from the face of the building.
Attached signs shall not project above the roofline or cornice except when in the opinion of the Planning Commission the sign is an architectural part or feature of the building.
Freestanding signs shall not extend to a height more than twenty (20) feet above the sidewalk or paved area except when in the opinion of the Planning Commission the sign is an architectural feature of the site.
Signs shall not face the side line of any adjoining lot in any “R” District when such sign is within twentyfive (25) feet of said side line.
8.94.030 - Building Height Limit. ¶
8.94.040 - Minimum Building Site. ¶
8.94.050 - Yards Required. ¶
Same as specified for “C-1” Districts.
(Prior Code § 6283, 6284; Ord 1483 – 10/10/61)