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Title 27 — ZONING

Chapter 27.40 — BUILDING HEIGHT AND BULK

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

27.40.010 SCOPE.

This chapter applies only to the study area encompassed by the Downtown Specific Plan of the General Plan of the City as adopted by the City Council and as may be amended by the Council from time to time. No special permit is required for buildings or structures which meet the height and bulk standards of this chapter.

27.40.020 HEIGHT.

Structures and building heights as defined in Section 27.04.080 shall be permitted to be developed provided they do not exceed the maximum height delineated for the respective project sites as shown on the Building Height and Bulk Plan in the Downtown Specific Plan. High-rise buildings over fifty-five (55) feet in height may be permitted if a site plan and architectural review is first approved by the Planning Commission as provided in Chapter 27.06.

27.40.030 BULK.

(1) Structures and buildings shall be developed in accordance with the following standards:

Building/Structure Height
(Feet)
Bulk Dimensions
0 thru 55 No limitation
56 thru 75 Above fifty-five (55) feet maximum building dimension of 150 lineal feet and maximum diagonal
dimension of 170 lineal feet.
  • (2) Bulk is measured as illustrated in the following diagrams:

(3) Variations to the maximum building bulk for buildings greater than fifty-five (55) feet in height may be permitted by a special use permit approved by the Planning Commission subject to the following criteria:

(A) A better and more appropriate design for the site is achieved than without the variation;

(B) The parcel coverage will not exceed 40%;

(C) The parcel size is at least one and one half (1.5) acres;

(D) The design preserves view corridors and sunlight access as well as a design that conforms to all requirements of the Downtown Specific Plan;

(E) The design conforms to the goals, policies and the streetwall area standards of the Downtown Specific Plan;

(F) The project site is designated for residential use in the Downtown Specific Plan, and the floor area above fifty-five (55) feet is utilized exclusively for residential use.

Chapter 27.42 STREET WALL AREA DISTRICT

27.42.010 STREET WALL AREA.

Structures and buildings on parcels identified as Street Wall Area on the Building Height and Bulk Plan in the Downtown Specific Plan shall be developed in accordance with the following diagram:

(1) The maximum building height at the parcel boundary is equal to the horizontal distance between midpoint of the public right-of-way and the parcel boundary (A) or thirty-six (36) ft., whichever is greater.

(2) The maximum depth of the street wall area is equal to two times the distance of (A).

(3) The building height at any point within the street wall area shall not exceed the slope defined by a forty-five degree (45�) angle measured from the midpoint of the public right-of-way, except as allowed by section (1) above at the parcel boundary.

(4) The maximum building height beyond the street wall area shall be controlled by the Building Height and Bulk Plan in the Downtown Specific Plan.

(5) The area above the street wall area as defined in Section (3), shall be open to the sky. Elevators, stairwells and other mechanical or other appurtenances are not permitted to protrude above the street wall area. Allowable intrusions above the street wall area are limited to minor architectural detailing not exceeding four (4) feet in height and parapets including railings and arbors and landscaped planting areas, subject to approval of a site plan and architectural review.

(6) Outdoor uses shall be allowed in area (B).

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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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