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3932 Woodcreek Lane San Jose, CA 95117

(408) 490-4248

Accessory Dwelling Unit (ADU) City Regulations for

Cupertino, CA

Cupertino is a city in California’s Silicon Valley. Cupertino is where Apple Headquarters is located where you can visit the Apple Park Visitor Center. If visiting the area be sure to check out Ridge Vineyards or Pichettie Winery to get a taste of the local wines.  



Lot Size:

Detached: lots greater than 10,000 sq.ft. Attached: lots smaller than 10,000 sq.ft. (however, it may be detached if the proposed architecture, colors, materials etc. consistent with main house).

Maximum ADU Floor Area:

Min. 150 sq.ft. and limited to 10% of net lot area up to 1,000 sq.ft., or 50% of existing living space of main dwelling, whichever is more restrictive.

Number of Bedrooms:

No min/max, but must follow allowable density guidelines of lot.


No min/max


Require separate bathroom and kitchen facilities (permanent range, counters, refrigerator and sink).


Require no additional parking, otherwise must have additional parking space onsite if less than minimum off-street parking spaces available for the main house. Parking exceptions apply


Front: 20′ in residential zones, 30′ in agricultural zones.

Rear: 3′ Side: interior 3′, street side on corner 15′, street side on corner adjacent to key lot 20′.


Attached: Limited to first floor.

Detached: 20′ limited to 1 story


Must follow guidelines of underlying zone.

Rear Yard Coverage:

30% Max


ADU to be consistent with existing general plan and zoning land use designation for lot.


Independent outdoor access must be provided without going through the principal dwelling. Where second-story ADU allowed, entry shall not be provided by exterior staircase. All access to ADU to be screened from public street.