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Title 27 — ZONINGChapter 27.28 — DOWNTOWN

Article III — R6-D DISTRICT—MULTIPLEFAMILY DWELLINGS (HIGH DENSITY)

San Mateo Zoning Code · 2026-06 edition · updated 2026-07-25 · San Mateo

27.28.070 PERMITTED USES.

Use of buildings, or land in this district and buildings hereafter erected, structurally altered or enlarged shall be limited to the uses permitted in R1, R2, R3, R4, R4-D, R5 or R5-D Districts.

27.28.072 SPECIAL USES.

Unless otherwise provided, any special uses permitted in R4, R4-D, R5 or R5-D Districts may be permitted subject to approval of a special use permit by the Planning Commission.

27.28.074 OFF-STREET PARKING.

Off-street parking facilities shall be provided as required in Chapter 27.64 subject to the design standards in Section 27.25.030 in the R4-D District.

27.28.076 MINIMUM DEVELOPMENT STANDARDS.

Residential development on properties zoned R6-D shall not exceed 50 units per acre regardless of parcel size.

27.28.078 MAXIMUM COVERAGE OF PARCELS.

(a) The maximum coverage of parcels (including enclosed or covered parking) shall be limited to fifty-five percent (55%) of the total parcel area.

(b) All areas open to the sky, excluding driveways and accessways, shall be landscaped.

27.28.080 MAXIMUM FLOOR AREA RATIO.

The maximum floor area ratio in this district is 3.0.

27.28.082 YARD AREAS GENERALLY.

(a) Buildings shall not be erected or enlarged unless required yard areas are provided and maintained in connection with such building, structure or enlargement. Required yards may be combined in various ways through a planned unit development to preserve and enhance the existing site elements (including sunlight, protection of existing heritage trees, creeks, waterways, historical or architecturally important sites, or structures, and archaeological sites). Such combinations shall be considered by the City as part of the planning application review.

(b) For one family and two family dwellings the regulations of the R1-B district shall apply.

27.28.084 FRONT YARDS.

A front yard of not less than twenty (20) feet shall be provided and maintained.

27.28.086 SIDE YARDS.

A side yard of not less than fifteen (15) feet shall be provided and maintained.

27.28.088 REAR YARDS.

A rear yard of not less than twenty-five (25) feet shall be provided and maintained.

27.28.090 LANDSCAPING.

At least twenty-five (25) percent of the required rear yard shall be landscaped and planted as defined in Section 27.04.267 for usable open space only (exclusive of parking areas, driveways, or accessory facilities) and maintained in common.

27.28.092 USABLE OPEN SPACE REQUIREMENTS.

(a) The open space requirements of this district are in addition to any open space requirements resulting from the approval and filing of a subdivision map, any open space requirements imposed upon a planned development in accord with the general plan, or any required off street parking areas or driveways. Open space required by this section is intended to be for the use and enjoyment of the residents of the development.

(b) Each dwelling unit shall be provided with the following:

(1) Not less than eighty (80) square feet per dwelling unit of private open space directly accessible to each unit provided that no single creditable private open space shall be less than seventy-five (75) square feet or have a dimension of less than six (6) feet in each direction, or

(2) 150 percent of the private usable open space requirement in common usable open spaces provided that no creditable common usable open space shall be less than 300 square feet with a dimension not less than fifteen (15) feet in each direction, or

(3) A proportional combination of both of the above.

27.28.094 DWELLING STANDARDS.

Section 27.22.110 in the R3 district shall apply.

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Contents — San Mateo Zoning Code
San Mateo Zoning Code
  1. Title 27 — ZONING
    Overview
    1. Chapter 27.02 — GENERAL PROVISIONS
    2. Chapter 27.04 — DEFINITIONS
    3. Chapter 27.06 — ADMINISTRATION
    4. Chapter 27.08 — RULES OF PROCEDURE
    5. Chapter 27.10 — REVIEW PROCEDURE
    6. Chapter 27.12 — FEES
    7. Chapter 27.13 — TRANSPORTATION IMPROVEMENT FEE
    8. Chapter 27.14 — REDEVELOPMENT
    9. Chapter 27.15 — DENSITY BONUS
    10. Chapter 27.16 — RESIDENCE DISTRICTS
    11. Chapter 27.18 — R1 DISTRICTS
    12. Chapter 27.19 — ACCESSORY DWELLING UNITS AND JUNIOR ACCESSORY …
    13. Chapter 27.21 — TWO-UNIT
    14. Chapter 27.24 — R4 DISTRICT—MULTIPLE FAMILY DWELLINGS (HIGH DE…
    15. Chapter 27.26 — R5 DISTRICT—MULTIPLE FAMILY DWELLINGS (HIGH DE…
    16. Chapter 27.27 — RESIDENTIAL
    17. Chapter 27.28 — DOWNTOWN
    18. Chapter 27.29 — RESIDENTIAL OVERLAY DISTRICT—MIXED USE
    19. Chapter 27.30 — C1 DISTRICTS— NEIGHBORHOOD COMMERCIAL
    20. Chapter 27.32 — C2 DISTRICTS—
    21. Chapter 27.34 — C3 DISTRICTS—
    22. Chapter 27.36 — C4 DISTRICTS
    23. Chapter 27.38 — CBD DISTRICTS— CENTRAL BUSINESS DISTRICT
    24. Chapter 27.39 — CBD SUPPORT DISTRICT— CENTRAL BUSINESS DISTRIC…
    25. Chapter 27.40 — BUILDING HEIGHT AND BULK
    26. Chapter 27.44 — E1 DISTRICTS—EXECUTIVE PARK
    27. Chapter 27.48 — E2 DISTRICTS —EXECUTIVE OFFICES
    28. Chapter 27.54 — MANUFACTURING DISTRICTS
    29. Chapter 27.56 — M1 DISTRICTS
    30. Chapter 27.59 — S DISTRICTS
    31. Chapter 27.60 — SPECIAL DISTRICTS
    32. Chapter 27.61 — SC DISTRICTS—SENIOR CITIZEN OVERLAY DISTRICT—S…
    33. Chapter 27.62 — PLANNED DEVELOPMENTS —SPECIAL USE PERMITS
    34. Chapter 27.63 — ADULT ENTERTAINMENT BUSINESSES
    35. Chapter 27.64 — OFF-STREET PARKING AND LOADING
    36. Chapter 27.65 — AMUSEMENT ARCADES AND MACHINES
    37. Chapter 27.66 — HISTORIC PRESERVATION
    38. Chapter 27.67 — OPEN AIR VENDORS
    39. Chapter 27.68 — MAINTENANCE OF PROJECT SITE
    40. Chapter 27.69 — RECYCLING FACILITIES
    41. Chapter 27.70 — ACCESSORY BUILDINGS AND STRUCTURES IN REQUIRED…
    42. Chapter 27.72 — NONCONFORMING BUILDINGS AND USES
    43. Chapter 27.73 — TC DISTRICT—
    44. Chapter 27.74 — SPECIAL USE PERMITS
    45. Chapter 27.75 — MIXED USE CONVENIENCE MARKET/AUTOMOBILE SERVIC…
    46. Chapter 27.76 — PERFORMANCE STANDARDS
    47. Chapter 27.77 — DESIGN REVIEW STANDARDS FOR SERVICE STATIONS
    48. Chapter 27.78 — VARIANCES
    49. Chapter 27.79 — REASONABLE
    50. Chapter 27.80 — AMENDMENTS
    51. Chapter 27.82 — MAPS—BOUNDARY LINES
    52. Chapter 27.83 — SLOPE AND HILLSIDE DEVELOPMENT STANDARDS
    53. Chapter 27.84 — FENCES, TREES AND HEDGES
    54. Chapter 27.85 — DAY CARE CENTERS
    55. Chapter 27.86 — RECYCLING COLLECTION AREAS
    56. Chapter 27.87 — OUTDOOR RESTAURANT SEATING AND MERCHANDISE DIS…
    57. Chapter 27.88 — BAY MEADOWS SPECIFIC PLAN
    58. Chapter 27.90 — TOD DISTRICT— TRANSIT ORIENTED DEVELOPMENT
    59. Chapter 27.92 — HILLSDALE STATION AREA PLAN
    60. Chapter 27.94 — HOUSING

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