Chapter 17.20 — Foster City Zoning Code

R-4 HIGH DENSITY MULTIPLE-FAMILY RESIDENCE DISTRICT

Sections:

17.20.010 Regulation generally.

17.20.020 Permitted uses.

17.20.030 Conditional uses.

17.20.040 Area, bulk, yard and height regulations.

17.20.050 Parking.

17.20.060 Design standards.

17.20.010 Regulation generally. ¶

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The specific regulations set forth in this chapter shall apply in all R-4 districts. (Ord. 674 § 2 (Exh. F), 2024)

17.20.020 Permitted uses. ¶

The following uses shall be permitted in the R-4 districts:

A. Any use permitted in any R-3 residential districts;
B. Accessory uses which are necessary to the above-mentioned uses. (Ord. 674 § 2 (Exh. F), 2024)

17.20.030 Conditional uses. ¶

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

A. Any conditional use permitted in the R-3 multiple-family residential districts;

B. Convalescent homes, rest homes or nursing homes accommodating more than five persons in addition to the owner or manager and his family wherein the total structure has been designed specifically for the use permitted. (Ord. 674 § 2 (Exh. F), 2024)

17.20.040 Area, bulk, yard and height regulations. ¶

The following area, bulk, yard and height regulations shall apply in the R-4 districts:

Minimum Building Site	Minimum Building Site	Minimum Density Permitted (units per acre)	Maximum Density Permitted (units per acre)	Minimum Yards Required	Minimum Yards Required	Minimum Yards Required	Maximum Height Permitted	Maximum Height Permitted	Maximum Coverage Permitted	Open Green Area Required
Average Width (ft.)	Minimum Area (sq. ft.)			Front (ft.)	Side (ft.)	Rear (ft.)	Stories	Ft.	(%)	(%)
150	15,000	15/201	35	10	5/102	10	5	55	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.

2 Side setbacks shall be increased to 10 feet where the property abuts property in the R-1 or R-1/PD district.

(Ord. 674 § 2 (Exh. F), 2024)

17.20.050 Parking. ¶

Parking shall be provided in accordance with Chapter 17.62. (Ord. 674 § 2 (Exh. F), 2024)

17.20.060 Design standards. ¶

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

17.22

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