Los Gatos, California: ADU Regulations

City or County:
Los Gatos, California

Zoning:

R-1/R-D/R-1D/RM/HR/RC

Types of ADUs:

Attached, Detached

Stories:

Single story, but may occupy the second story of an existing accessory building

Lot Size:

No minimum as long as ADU complies with lot coverage guidelines.

Maximum ADU Floor Area:

An additional 10% in the FAR standards for all structures, excluding garages, is allowed for an ADU up to 1,200 sq. ft. Planning staff should be consulted to calculate the allowable floor area for an ADU per the HSD&G.

Lot Coverage:

ADUs must comply with lot coverage maximums for the zone except with regard to the addition of a single efficiency unit.

Bedroom:

2 bedrooms max.

Storage:

Must comply with floor area ratios for primary structures.

Kitchen:

To include permanent provisions for living, sleeping, eating, cooking, and sanitation on same parcel as single-family dwelling is situated.

Bath:

To include permanent provisions for living, sleeping, eating, cooking, and sanitation on same parcel as single-family dwelling is situated.

Note: Drainage and sewer connections should be assessed on a project by project basis.

Parking:

Parking may be provided in a front setback on a driveway or through tandem parking. One parking space is required per ADU or per bedroom, whichever is less, with the following exceptions (where no parking is required):

• ADU is within one-half mile of a public transit stop

• ADU is within a historic district

• When existing square footage is converted to an ADU

• When on-street parking permits are required but not offered to the ADU occupant

• When a car share vehicle is located within one block of the ADU

• When the Director finds that the lot does not have adequate area to provide parking

• Attached ADUs do no require additional parking spaces

Setbacks:

Attached: same as the primary dwelling.

Detached in R-1/R-D/RM/R-1D: front and streetside setbacks are the same as the primary dwelling, rear and side setbacks and separation from other structures are 5’ minimum.

Detached in HR/RC: minimum setbacks are the same as primary dwelling unit, located within the least restrictive development area (slopes less than 30%).

Note: Fire Department regulations should be assessed on a project by project basis.

Height:

15’ and one story with the following exceptions:

Attached in R-1/R-D/R-M/R-1D/HR/RC: allowed within existing space, or where a two-story primary dwelling unit exists.

Detached in R-1/R-D/RM/R-1D: allowed within existing space, or above an existing one-story accessory building, where a two-story primary dwelling exists.

Location:

ADUs are not allowed in front of the primary dwelling unit in R-1/R-D/RM/R-1D zones.

Rear Yard Coverage:

In R1/RD/RM zones, the maximum allowable coverage with any roofed structures is 40%. ADUs must comply with lot coverage maximums for the zone except with regard to the addition of a single efficiency unit.

Design:

The design, form, materials, and color of new second dwelling unit to be compatible with primary dwelling unit and neighborhood. ADUs must maintain the single-family appearance of the property.

Note: Historic Neighborhoods or Districts should be assessed on a project by project basis.

Entryways:

Entrances serving the ADU shall not be constructed on any elevation facing a public street. Attached ADUs must have a separate entrance.