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City of Santa Clara, California: ADU Regulations

City or County:

City of Santa Clara, California

Date Updated:

11.30.2020
Santa Clara has not updated its municipal code in compliance with California statewide regulations.

Zoning:

Any residential or mixed-use zone. One Attached/Detached, and One JADU

Types of ADUs:

Attached, Detached, Junior

Stories:

Detached: Single-story

New second-story Attached/Junior subject to Architectural Review.

Lot Size:

No minimum provided the lot already has an existing single-family dwelling and the lot can sustain an ADU that meets yard coverage limits and necessary setbacks.

Maximum ADU Floor Area:

Attached ADU: 50% of living area of main dwelling up to 1,200 sq.ft.

Detached ADU: 1,200 sq.ft.

Junior ADU: 500 sq.ft.

Lot Coverage:

N/A

Bedroom:

Two bedrooms maximum

Storage:

No min/max

Kitchen:

Require separate kitchen facilities (permanent range, counters, refrigerator, sink). Junior require efficiency kitchen.

Bath:

Require separate bathroom facilities, limited to 1 bathroom maximum. Junior can share with primary residence.

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

Parking:

UNCLEAR WITH CURRENT CITY APPLICATION OF STATE LAW. DEFAULT TO STATE GUIDELINES.

Previous regulation in City of Santa Clara: Properties with an ADU are not required to provide additional onsite parking beyond lot requirements. If required covered parking is demolished during the development of the ADU, two replacement parking spaces must be provided. Additionally, if main dwelling unit is subject to a preferential parking permit program for on-street parking, ADU to also be eligible for preferential parking permit program.

Setbacks:

Side and Rear: 4’

No setbacks required for conversions of existing structures

Height:


Detached ADU: 16’ max

Attached/Junior: Same as primary residence

Location:

N/A

Rear Yard Coverage:

N/A

Design:

The roof, siding, and windows must be consistent with the roof slope, materials and design of the main dwelling. Additional design regulations apply to attached second-story ADUs.

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

Entryways:

Enclosed or internal staircases to access attached second-floor ADUs are required.

Source Code:

Important Note: Rules and regulations are updated and changed frequently. It’s one of our jobs to be up to speed and navigate those regulations. Let us know if our website isn’t up to date or if you have any information that could help. Cheers!