The intent of the O-S zone is to protect and preserve open space land as a limited and valuable resource, to permit a reasonable use of open space while at the same time preserving and protecting inherent open space characteristics, and to implement the open space provisions of the general plan.

The following uses are permitted in the O-S zone:

The following uses may be established in the O-S zone, subject to the granting of a conditional use permit, in accordance with the provisions of Chapter 17.50 or an administrative zoning permit in accordance with the provision of Chapter 17.40.

Other than personal cultivation of marijuana as defined in Chapter 17.243, marijuana cultivation, delivery, dispensary, manufacturing and storage are prohibited in the O-S zone. No permit, whether conditional or otherwise, shall be issued for the establishment or use of such activities.

District requirements are as follows:

The minimum required lot area for a single-family residence is two acres exclusive of required driveway projections for panhandle or flag lots. All other developments, including planned unit developments, shall have a minimum lot area of five acres.

The minimum lot width shall be 100 feet.

Panhandle or flag lots may be created in the O-S zone by subdivision or parcel map provided that they include a projection with a minimum width of 20 feet connecting the lot to frontage on a public street. The projection shall be used as a driveway providing access to the panhandle or flag lot. The maximum length of such driveway projections shall be 300 feet. If the driveway is longer than 200 feet, the grade of the driveway shall not exceed 10 percent, unless a steeper driveway is approved by the fire department. When two flag lots are created side by side, and the length of the two flag projections are abutting, and both property owners are guaranteed the right to use both adjacent driveways, the driveway width may be reduced to 15 feet for each individual adjacent lot, for a combined width of 30 feet for the shared driveway.

Every lot shall maintain a front yard of not less than 30 feet, with the following exceptions:

Side yard requirements shall be as follows:

Every lot shall maintain a rear yard not less than 25 feet in depth; however, an attached carport or covered patio, open on at least two sides and not greater than 50 percent of the width of the lot, may be constructed; provided such structure is not closer than 12 feet to the rear property line.

The maximum building height is 35 feet for primary structures.

See Section 17.140.120 for regulations relating to accessory buildings in residential zones.

For general residential parking requirements, including driveway widths and parking area development standards refer to Chapter 17.185. For parking requirements in a planned unit development, refer to Chapter 17.60. Parking for uses requiring approval of a conditional use permit shall be determined by the planning commission.

Refer to Chapter 17.190 for sign regulations.