Redwood City, CA

Accessory Dwelling Unit (ADU) Regulations



Lot size:

No min/max but must follow zoning guidelines on lot coverage, lot must have existing or proposed single-family dwelling.

Maximum ADU Floor Area:

700 sq.ft., 800 sq.ft. for ADUs that meet 11A Standards on accessibility

900 sq.ft. for ADUs on RH or R-1 lots larger than 9,999 sq.ft.

No. of Bedrooms:

No min/max


No min/max


Require separate bathroom and kitchen facilities (must be a stove/oven, 220 amp circuits, sink and food preserving appliance.  Wet bars with countertop ovens are not acceptable.


No additional parking required.


Attached:  must meet height standards for underlying zoning district.

Detached: must be 10' from rear property line, at least 6' from any other structure and meet minimum side yard setback for zoning district.


Attached:  must meet height standards for underlying zoning district.

Detached: 14'


May be attached to house or detached in rear yard.

Rear Yard Coverage:

50% max.


Must be architecturally compatible with style, exterior paint and materials of single-family dwelling on same lot.


Garage or patio doors may not be used as main entrance, unit must be accessed by a side-hinged swinging door.

Join Our Mailing List!

Name *
E-mail *


Acton Construction is a close-knit group that shares the same commitment to creative innovation, reliable service and exceptional quality.

See Our People

View Careers

Acton Construction serves Silicon Valley and the surrounding areas of Campbell, Cupertino, Los Altos, Los Gatos, Menlo Park, Palo Alto, San Jose, Santa Clara and Saratoga.


View Homeowner Reviews

View Our Services View Our Services
View Our Projects View Our Projects
Contact Us Contact Us