ADU Town Regulations

For any lot located fully or partially in a Shoreland Zoning district, Accessory Dwelling Units must independently comply with all Shoreland Zoning requirements.

Except as established for lots partially or fully in the Shoreland Zoning District, Accessory Dwelling Units shall be permitted in all zoning districts where single-family housing is permitted, on the same lot as a single-family dwelling, constructed only:

• Within an existing single-family dwelling unit on the lot

• Attached to, or sharing a wall with, a single-family dwelling unit

• As a new structure on a lot for the primary purpose of creating an Accessory Dwelling Unit

• Within an existing detached accessory structure on the same lot as a single-family dwelling

Accessory dwelling units are specifically prohibited in, on, or within any of the following:

• Any two-family or multi-family dwelling

• Any lot that contains one (1) or more principal commercial use(s) either on the parcel or in any structure located on such lot

• Any lot that does not have a single-family dwelling as its principal use

Only one (1) Accessory Dwelling Unit is allowed per lot, and only on a lot on which the CEO has determined the primary use to be a single-family dwelling.

The minimum square footage of finished living area for Accessory Dwelling Units is one hundred-and-ninety (190) square feet

The maximum footprint for any Accessory Dwelling Unit is eight-hundred (800) square feet and shall not exceed the footprint of the primary dwelling unit. If the footprint of the primary dwelling is 800 sf or less, the maximum footprint of the Accessory Dwelling Unit shall not exceed 90% of the primary dwelling’s footprint. The Zoning Board of Appeals shall not have the authority to increase this footprint by variance or otherwise.

Although an existing single-family dwelling may be expanded or utilized for the purposes of creating an Accessory Dwelling Unit, no portion of an Accessory Dwelling Unit shall be located within minimum lot line setbacks, including non-conforming structures of record.

Accessory Dwelling Units must comply with applicable building and fire safety codes.

Accessory dwelling units must have shared common utilities, such as water and wastewater disposal, with the single-family dwelling, except as required by applicable codes.

Accessory Dwelling Unit must be allowed on any lot where a single-family dwelling is the principal structure. In the event that one (1) Accessory Dwelling Unit has been duly permitted and constructed on a lot utilizing this exemption from zoning density requirements for minimum area per dwelling unit, any additional dwelling unit, including any Accessory Dwelling Units, must comply with all established dimensional standards

An Accessory Dwelling Unit shall be permitted only as one (1) floor of living space, such as a one-story structure or a single floor above a garage.

Accessory Dwelling Units are intended to be accessed via the existing driveway and curb cut for the principal single-family dwelling, and must meet established street Ordinances

An accessory dwelling unit shall not be considered a separate dwelling unit when calculating lot area per dwelling unit for this Ordinance.

An Accessory Dwelling Unit is not required to provide any additional parking requirements beyond the minimum number of off-street parking spaces established for the single-family dwelling unit located on the same lot

Ownership of the existing single-family dwelling and the Accessory Dwelling Unit must be held by the same person(s).

Accessory Dwelling Units shall retain and respect the existing streetscape and character of the neighborhood, and preserve the single-family dwelling appearance, architectural style, and character of the dwelling.

The owner of the Accessory Dwelling Unit must provide written verification that the unit is connected to adequate wastewater services prior to receiving a Certificate of Occupancy