Are ADUs allowed in Sacramento:
Number of ADUs allowed:
A maximum of one secondary dwelling unit is permitted on one lot.
Types of ADUs allowed:
Attached, detached and conversion of existing structures (which are exempt from the majority of requirements)
A lot must be at least 5,200 sq. ft. to allow for an ADU.
1,200 sq.ft. max, excluding garage space and exterior stairs.
Must include independent and permanent provisions for eating and cooking.
Setback requirements applicable to the lot on which the primary dwelling is located apply to the ADU, except for the following:
No setback is required for an existing legally-constructed accessory structure that is converted to an ADU; and
No interior side-yard or rear-yard setback is required for ADU with building height of 10’ or less, has an overall height of 18’ or less, and is located more than 60’ from the front property line
No interior side-yard or rear-yard setback is required for the ground floor of a multi floor ADU located more than 60’ from the front property line; and
An ADU constructed above an accessory structure, or an ADU less than 60 feet from the front property line, shall have a minimum rear-yard setback of 5'; and a minimum side-yard setback equal to the side-yard setback required by the zoning designation for the primary dwelling unit or 5', whichever is less
ADU must maintain at least a 4' separation from the primary dwelling.
Must comply with requirements applicable to the lot on which the ADU is located.
Fire sprinklers are required in accessory dwellings if also required in primary dwelling.
Note: Fire Department regulations should be assessed on a project by project basis.
1. The design of the ADU shall conform to the design guidelines applicable to the lot on which the ADU is located. If the design of the primary single-unit dwelling or surrounding neighborhood conflict with the applicable design guidelines, the design guidelines control.
2. New ADUs should use universal access design features, including “no step” entrances, where topography and site constraints allow.
3. No portion of an ADU balcony, deck, or open-stair landing that faces the rear lot line or the side lot line nearest to the ADU shall be higher than 3' from the ground
Note: Historic Neighborhoods or Districts should be assessed on a project by project basis.
ADU must comply with height requirements applicable to the lot on which the ADU is located.
Must have independent exterior access from the existing primary dwelling.
ADUs cannot be offered for sale separate from the primary dwelling unit but may be rented.
ADUs must have access to public sewer and water facilities in the RD zones.
Note: Drainage and sewer connections should be assessed on a project by project basis.
Any ADUs located within a historic district or accessory to a landmark is subject to the site plan and design review under chapter 17.808.
Passageways are not required during construction of any ADU.
Conversion of existing structures is permitted provided that the ADU is entirely contained within an existing single-unit dwelling or existing legally-constructed accessory structure, is not located within a historic district, does not involve a landmark or involve modifications to the exterior of the landmark, has exterior access independent from the primary dwelling, and features side and rear setbacks are sufficient for fire safety.
Potential Rental Income:
According to Zillow.com, an ADU in Sacramento can generate $18,600+ per year in possible rental income.
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!