Title 27 — ZONING San Mateo Zoning Code · 2026-06 edition · ingested 2026-07-06 · San Mateo In this part Chapter 27.02 — GENERAL PROVISIONS Chapter 27.04 — DEFINITIONS Chapter 27.06 — ADMINISTRATION Chapter 27.08 — RULES OF PROCEDURE Chapter 27.10 — REVIEW PROCEDURE Chapter 27.12 — FEES Chapter 27.13 — TRANSPORTATION IMPROVEMENT FEE Chapter 27.14 — REDEVELOPMENT Chapter 27.15 — DENSITY BONUS Chapter 27.16 — RESIDENCE DISTRICTS Chapter 27.18 — R1 DISTRICTS Chapter 27.19 — ACCESSORY DWELLING UNITS AND JUNIOR ACCESSORY DWELLING UNITS Chapter 27.21 — TWO-UNIT Chapter 27.24 — R4 DISTRICT—MULTIPLE FAMILY DWELLINGS (HIGH DENSITY) Chapter 27.26 — R5 DISTRICT—MULTIPLE FAMILY DWELLINGS (HIGH DENSITY) Chapter 27.27 — RESIDENTIAL Article I — R4-D DISTRICT— MULTIPLE FAMILY DWELLINGS FOR DOWNTOWN (MEDIUM HIGH DENSITY) Article III — R6-D DISTRICT—MULTIPLEFAMILY DWELLINGS (HIGH DENSITY) Chapter 27.29 — RESIDENTIAL OVERLAY DISTRICT—MIXED USE Chapter 27.30 — C1 DISTRICTS— NEIGHBORHOOD COMMERCIAL Chapter 27.32 — C2 DISTRICTS— Chapter 27.34 — C3 DISTRICTS— Chapter 27.36 — C4 DISTRICTS Chapter 27.38 — CBD DISTRICTS— CENTRAL BUSINESS DISTRICT Chapter 27.39 — CBD SUPPORT DISTRICT— CENTRAL BUSINESS DISTRICT SUPPORT Chapter 27.40 — BUILDING HEIGHT AND BULK Chapter 27.44 — E1 DISTRICTS—EXECUTIVE PARK Chapter 27.48 — E2 DISTRICTS —EXECUTIVE OFFICES Chapter 27.54 — MANUFACTURING DISTRICTS Chapter 27.56 — M1 DISTRICTS Chapter 27.59 — S DISTRICTS Article I — Agricultural Districts Article II — Open Space Districts Article III — Qualified (Q) Overlay Zoning Districts Chapter 27.61 — SC DISTRICTS—SENIOR CITIZEN OVERLAY DISTRICT—SPECIAL USE PERMITS Article I — GENERAL PROVISIONS Article III — NONRESIDENTIAL PLANNED UNIT DEVELOPMENT Article IV — APPLICATION PROCEDURE AND ADMINISTRATION OF REGULATIONS Chapter 27.63 — ADULT ENTERTAINMENT BUSINESSES Article 1 — OFF-STREET PARKING Article 2 — OFF-STREET LOADING Chapter 27.65 — AMUSEMENT ARCADES AND MACHINES Chapter 27.66 — HISTORIC PRESERVATION Chapter 27.67 — OPEN AIR VENDORS Chapter 27.68 — MAINTENANCE OF PROJECT SITE Chapter 27.69 — RECYCLING FACILITIES Chapter 27.70 — ACCESSORY BUILDINGS AND STRUCTURES IN REQUIRED YARDS Chapter 27.72 — NONCONFORMING BUILDINGS AND USES Chapter 27.73 — TC DISTRICT— Chapter 27.74 — SPECIAL USE PERMITS Chapter 27.75 — MIXED USE CONVENIENCE MARKET/AUTOMOBILE SERVICE STATIONS Chapter 27.76 — PERFORMANCE STANDARDS Chapter 27.77 — DESIGN REVIEW STANDARDS FOR SERVICE STATIONS Chapter 27.78 — VARIANCES Chapter 27.79 — REASONABLE Chapter 27.80 — AMENDMENTS Chapter 27.82 — MAPS—BOUNDARY LINES Chapter 27.83 — SLOPE AND HILLSIDE DEVELOPMENT STANDARDS Chapter 27.84 — FENCES, TREES AND HEDGES Chapter 27.85 — DAY CARE CENTERS Chapter 27.86 — RECYCLING COLLECTION AREAS Chapter 27.87 — OUTDOOR RESTAURANT SEATING AND MERCHANDISE DISPLAY Chapter 27.88 — BAY MEADOWS SPECIFIC PLAN Chapter 27.90 — TOD DISTRICT— TRANSIT ORIENTED DEVELOPMENT Chapter 27.92 — HILLSDALE STATION AREA PLAN Chapter 27.94 — HOUSING