ADU Checklist

Accessory Dwelling Units (ADUs) – Every dwelling unit functions as a separate unit. They are commonly known as “mother-in-law apartments”, “granny-flats” or studio apartments. An accessory dwelling unit (ADU) is a second dwelling unit created on a lot with a house, attached house or manufactured home.

NEW Detached ADU Specs

Lot Has 200-650 SF Footprint Available
Footprint for ADU will be 10′ or more from the existing residence
Footprint for ADU can fit with 4′ from any side or rear lot line
The ADU Footprint is smaller than 50% of the principal residence
Overall building coverage complies with applicable overlay zoning district (this is site specific)
*The maximum height of the ADU is 17′ (*Exception: If the single family dwelling on the property is over 17′ in height, and ADU may be equal to the height of the single family dwelling up to a maximum building height of 24′ with a pitched roof, 20′ for a flat roof. Setbacks will need to be 10′ from rear and side property lines.)
The entrance to the ADU needs to face an alley, public street, or facing the rear of the single family residence

Submit Site Plan

Things to gather:
The applicant shall submit a site plan drawn to an acceptable scale (as deemed by the Zoning Administrator) to display the following:
Lot dimensions;
Access ways, including driveways;
Foot prints of existing primary and accessory buildings on site;
Proposed ADU and accessory buildings square footage;
Location and dimensions of structures on the site;
Location and type of outdoor lighting;
ADU should be designed to preserve or compliment the architectural design, style and appearance of the primary single-family dwelling. As such, include in the site plan the appearance of the primary dwelling unit and include the following;
roof pitch,
Siding material,
Color
Window treatments (outside)

Gather Documents

You will need a completed building permit application form and payment of fees associated with the building permit.
Provide required or recorded easements on the property.

Proof of Owner Occupancy

Confirm the property is owner occupied (Proof of owner occupancy (2 documents), such as:
o Driver’s license
o Bank statement dated within last 30 days
o Current mortgage contract
o Vehicle registration
o Utility bill)

Site Context Photographs

Showing the site and the context of surrounding buildings/property (no panoramic photos)
Taken at the curb and along the property boundaries
Show adjacent improvements and existing on-site conditions
Aerial photographs of the site

Submit Building Plan

Make sure your submitted building plan includes:
Date, graphic scale and north arrow
Scaled site plan of property, showing all existing and proposed structures and parking spaces
Scaled floor plans indicating the total area in square feet of the entire home and the proposed area of the accessory dwelling unit
Building setbacks for existing and proposed structures
Show all existing and proposed off-street parking stalls (minimum of 4)
Indicate and label the entrance for the primary residence and the entrance for the proposed ADU
Show all existing and proposed landscaping and buffering measures
Lot coverage and area calculations for all proposed detached structures
Elevation drawings of all new proposed structures
Any proposed site grading for new proposed structures (label existing and finished grade)
For all work requiring a building permit, adequate building plans and engineering calculations must be submitted with the building permit application

ADUs Permitted

ADUs are currently permitted in the following cities:
Sandy City
Heber City
Provo City
North Ogden City
Alpine City
South Jordan City
Midvale City
Taylorsville City
Bountiful City
Cedar Hills City
Park City
Payson City
Enoch City
Orem City
Cottonwood City

ADUs Not Permitted

ADUs are not yet permitted in the following cities:
Kaysville City
Saratoga Springs
Centerville City
Millcreek
Holladay City

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