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Earlier editions: 2026-09

Title 27 — ZONING

San Mateo Municipal Code Ch. 27.34 C3 Districts—regional/Community Commercial

San Mateo Municipal Code · 2026-10 edition · updated 2026-10-05 · San Mateo

Cite as: San Mateo Municipal Code Chapter 27.34 · Text as of 2026-10-05

27.34.005 PURPOSE.

The Regional/Community Commercial District is intended to create and maintain major commercial centers accommodating a broad range of office, retail, and service uses of community-wide or regional significance. The C3 District differs from the C2 District in that a broader range of uses are allowed in the C3 District.

Exceptions & meaning →

27.34.010 PERMITTED USES.

The following uses are permitted:

(a) Permitted uses in the C1 and C2 districts; however, secondary units are prohibited;

(b) Ambulance service;

(c) Automobile, boat, and truck sales and rental, including service and repair as accessory to the primary sales use, sales may occur on open lot;

(d) Automobile service, parts, and repairs, classified as minor motor vehicle repair in Section 27.04.325;

(e) Car wash and detailing facilities, may not occur on open lot;

(f) Laboratories, research, experimental, and testing, provided no production or manufacturing of products occurs on the premises;

(g) Accessory uses to principle uses permitted; and

(h) Other compatible uses as determined by the Zoning Administrator.

prior code § 147.04(A)

Exceptions & meaning →

27.34.020 SPECIAL USES.

The following uses may also be permitted, subject to approval of a special use permit:

(a) Special uses permitted in the C1 and C2 districts;

(b) Auditorium, stadium, arena, armory, gymnasium, and other similar uses for public events;

(c) Restaurants, with drive-thru facilities; and

(d) Other compatible uses as determined by the Zoning Administrator subject to the granting of a special permit.

prior code § 147.04(B)

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27.34.030 CONDITIONS OF USE.

All uses permitted in this district shall be retail or service establishments dealing directly with consumers and shall be subject to the following conditions:

(a) That there shall be no manufacturing, processing or treatment of products other than those which are clearly incidental and essential to the retail business conducted on the same premises;

(b) That all permitted uses in this district be conducted without objection from adjoining users due to odor, dust, smoke, noise, vibration, or other similar cause;

(c) That any exterior sign displayed shall pertain only to a use conducted within the building;

(d) All uses permitted under this chapter shall be conducted wholly within an enclosed building, except as may be specifically authorized by special permit.

prior code § 147.04(C)

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27.34.040 OFF-STREET PARKING AND LOADING.

Automobile parking and loading facilities shall be provided as required or permitted in Chapter 27.64.

Prior code § 147.04(D)

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27.34.050 MAXIMUM FLOOR AREA RATIO.

The floor area ratio of all buildings and structures on a zoning plot shall be as follows:

(a) In a C3-1 district, the floor area ratio shall not exceed 1.0;

(b) In a C3-2 district, the floor area ratio shall not exceed 2.0.

Prior code § 147.04(E)

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27.34.055 BUILDING HEIGHT.

Building height shall not exceed the standards set forth on the Building Height Plan of the General Plan.

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27.34.060 BUFFERS.

The regulations governing buffers in the C1 districts shall also apply in the C3 districts.

Prior code § 147.04(F)

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27.34.070 SETBACK AND BUILD-TO-LINE STANDARDS FOR EL CAMINO REAL.

The regulations governing setback and build-to-line standards for El Camino Real in the C1 districts shall apply.

Exceptions & meaning →

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