Check your property's zoning, browse designs & get contractor estimates for your ADU project:
Number of ADUs allowed:
One (1) ADU in a residential use single-family and two (2) detached ADUs and no more than 25% of existing units within the existing multiple family dwelling in a multi-family district.
Types of ADUs allowed:
Detached ADU, Attached ADU, Junior ADU are allowed. ADUs may be new construction or converted from existing space. Junior ADUs must be converted from existing space.
Residential properties will not be subject to any minimum lot size for ADUs by ordinance or of the underlying zoning district. ~ AB68 & AB881 Update
ADU: 1,000 square feet.
JADU: 500 square feet.
Setbacks for a detached new construction Accessory Dwelling Unit shall be no more than 4 feet from the rear and side lot lines. No setbacks shall be required for Accessory Dwelling Units and Junior ADUs converted from legally eastablished existing space. Attached new construction Accessory Dwelling Units and conversions from existing space to be expanded must comply with the setbacks of the underlying zone. ~ According To AB68
One off-street parking space required, which may be provided as tandem parking on existing driveway.
a. The accessory dwelling unit is located within one-half mile of public transit.
b. The accessory dwelling unit is located within an architecturally and historically significant historic district.
c. The accessory dwelling unit is a part of the existing main dwelling unit or an existing accessory structure.
d. When on-street parking permits are required but not offered to the occupant of the accessory dwelling unit.
e. When there is a car share vehicle located within one block of the accessory dwelling unit.
f. When on-site parking is removed to allow for an accessory dwelling unit.
shall not be required to provide fire sprinklers if they are not required for the primary dwelling.
Shape, materials and style:
Shall incorporate the same or similar architectural features, building materials, roof pitch, and colors as the main dwelling unit UNLESS using a City of Redding approved ADU master plan.
A detached accessory dwelling unit shall not exceed two stories or a maximum height of twenty-two feet, unless additional height is permitted with approval of a site development permit by the director.
design review. design review is NOT required for an accessory dwelling unit. design review is required for unrelated work to the site or primary dwelling, if that work requires design review for some other reason (e.g., Hillside Design District, etc.) If any work to the primary dwelling requires design review, submit the completed design review application to the Planning Counter. Remove all references to the accessory dwelling unit from the design review submittal (to the maximum extent feasible). 5. OTHER APPLICATIONS REQUIRED. Existing zoning standards may require additional applications. If a project requests relief from applicable zoning standards please consult the Planning Counter to discuss viable options.
Number of Bedrooms:
Not specified by State Standards.
Owner-occupancy will not be required for new Accessory Dwelling Unit (ADU)s (conversion and new construction) built between 2020 and 2025. ~ SB13 Update
Local health officer approval where a private sewage disposal system is being used, if required. (State requirements)
*** Beginning in 2020, according to state law, all residential zoning districts, including single-family and multi-family, are allowed to build Accessory Dwelling Units. ***
Residential Building Code:
The California Building Code (CBC) 2019 is adopted.
ADU Design Library
Browse hundreds of models to find the right fit for your property.
ADU Model 442 sqft
26 ft x 17 ft
ADU Model 700 sqft
35 ft x 20 ft
ADU Model 240 sqft
20 ft x 12 ft
This estimate is based on recently completed projects in the area and is inclusive of all typical soft costs such as permitting, design and engineering fees.