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planning@redwoodcity.org — 650.780.7236
Standards | Details |
|---|---|
Zones allowed | All residential and mixed-use zones |
Lot Restrictions | ADUs exempt from lot coverage calculations |
Minimum Lot Size | 0 |
Min/Max ADU Size | Min: 150 sf Max one bedroom or less: 850 square feet Max two or more bedrooms: 1000 square feet Max JADU: 500 square feet ADA Compliant ADU: 1,200 sq ft” – ADA compliant meeting 11A building code *Not more than 50% of main home floor area, unless under 800 square feet (state law allows an ADU up to 800 square feet on every property, some exceptions.) |
ADU Building Height | Attached: same as underlying zoning unless encroaching setbacks Detached: 24 feet (top of plate – 20 feet, roof slope: 4 feet) |
Setbacks | Rear and side: 4 feet. Front: 15 feet. Distance between buildings: 6 feet |
Parking Requirements | No parking required but, if provided, can be tandem and/or in driveway |
Owner Occupancy | ADU: None. JADU: Owner must live in the main dwelling or the ADU |
Sample fees from recent permits | 400 square feet – Attached Addition: $4,400 |
Other requirements | ADU may require fire sprinklers if the existing house already has fire sprinklers, or the total area of the ADU and any substantial remodeling exceeds 50 percent of the main living area or 1,000 square feet, whichever is less. ADU requires fire flow and geotechnical soils report ADU must be generally consistent in shape, material and style to the primary dwelling. If any structure on the lot is historic, additional standards may apply. Only one ADU and JADU per property is allowed. ADUs must comply with all requirements of the underlying zoning district. |
Process | Making an appointment to meet with a planner in the initial stages of the project can help avoid challenges and is highly recommended. Deed restrictions for JADUs are required to be notarized by the owner of the property. |
Exceptions | People with disabilities may apply for a waiver of the rules. |
Created by Community Planning Collaborative
