Chapter 17.18 — R-3 MEDIUM DENSITY MULTIPLE-FAMILY RESIDENCE DISTRICT — Foster City Zoning Code

Sections:

17.18.010 Regulations generally.

17.18.020 Permitted uses.

17.18.030 Conditional uses.

17.18.040 Area, bulk, yard and height regulations.

17.18.050 Parking.

17.18.060 Design standards. ¶

17.18.010 Regulations generally. ¶

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The specific regulations set forth in this chapter shall apply in all R-3 districts. (Ord. 674 § 2 (Exh. E), 2024)

17.18.020 Permitted uses. ¶

The following uses shall be permitted in the R-3 districts:

A. Multiple-family dwellings.
B. Accessory uses which are related to multiple-family dwellings.
C. Home occupations as defined in Section 17.04.020.

D. Community care facilities including family day care homes, day care centers, residential care facilities, low-barrier navigation centers, transitional housing and supportive housing as defined by Section 17.04.020.

E. Accessory dwelling units in compliance with Chapter 17.78. (Ord. 684 § 2 (Exh. C), 2024; Ord. 674 § 2 (Exh. E), 2024)

17.18.030 Conditional uses. ¶

The following uses shall be permitted only when authorized by a conditional use permit issued in accordance with Chapter 17.72:

Those uses permitted in any R-1 or R-2 districts with a conditional use permit and as regulated therein. (Ord. 674 § 2 (Exh. E), 2024)

17.18.040 Area, bulk, yard and height regulations. ¶

The following area, bulk, yard and height regulations shall apply in the R-3 districts:

Minimum Building Site	Minimum Building Site	Minimum Density Permitted	Maximum Density Permitted (units per acre)	Minimum Yards Required	Minimum Yards Required	Minimum Yards Required	Maximum Height Permitted	Maximum Height Permitted	Maximum Coverage Permitted	Minimum Open Green Area Required
Average Width (ft.)	Minimum Area (sq. ft.)	(units per acre)		Front (ft.)	Side (ft.)	Rear (ft.)	Stories	Ft.	(%)	(%)
150	15,000	15/201	35	10	10	10	3	38	50	30

1 Minimum density shall depend upon the general plan land use designation. For condominium residential, the permitted density range is 15 – 35 units per acre. For apartment residential, the permitted density range is 20 – 35 units per acre.

(Ord. 674 § 2 (Exh. E), 2024)

17.18.050 Parking. ¶

Parking shall be provided in accordance with Chapter 17.62.

Parking on the first level, not to exceed four feet above finished grade, shall not constitute a story. (Ord. 674 § 2 (Exh. E), 2024)

17.18.060 Design standards. ¶

All development shall comply with Chapter 17.96. (Ord. 674 § 2 (Exh. E), 2024)

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The Foster City Municipal Code is current throu 697, passed November 17, 2025.

Disclaimer: The City Clerk's Office has the official v Foster City Municipal Code. Users should contact t Office for ordinances passed subsequent to the ord above.

17.20

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