Sec. 78-80.4(a)

Accessory dwelling units

• Comply with building code

  An accessory dwelling unit shall comply with all applicable building code standards.

• Detached ADUAccessory dwelling unit (ADU)A second, smaller home on a lot that already has one — a garage flat, basement flat or backyard cottage. limited to rear yardYardThe open space left between a building and its lot line — the space a setback creates.

  Detached accessory dwelling units are limited to the rear yard.

• Detached ADUAccessory dwelling unit (ADU)A second, smaller home on a lot that already has one — a garage flat, basement flat or backyard cottage. setbacksSetbackThe distance a building must be held back from a lot line.10 ft

  A detached accessory dwelling unit shall have a minimum setback of ten feet from the rear and side property lines and ten feet from the principal structure.

• Entrance on side or rear

  The external entrance for internal or attached accessory dwelling units shall be located on the side or the rear of the structure. On corner lots, the entrance may face the secondary front setback.

• Maximum bedrooms2 bedrooms

  An accessory dwelling unit shall not contain more than two bedrooms or be occupied by more than three persons.

• Maximum floor area for detached900 sqftsq ftSquare feet. An acre is 43,560 sq ft; a typical suburban lot is 7,000–10,000.

  The maximum gross floor area of a detached accessory dwelling unit shall not exceed 900 square feet.

• Maximum floor area for internal/attached1,200 sqftsq ftSquare feet. An acre is 43,560 sq ft; a typical suburban lot is 7,000–10,000.

  The floor area of an internal or attached accessory dwelling unit shall not exceed 40 percent of the gross floor area of the principal dwelling, or 1,200 square feet, whichever is less.

• Maximum occupancy3 persons

  An accessory dwelling unit shall not contain more than two bedrooms or be occupied by more than three persons.

• No mobile homesManufactured homeA dwelling built in a factory to a federal standard and transported to the site. or recreational vehicles

  Mobile homes, recreational vehicles, travel trailers, manufactured homes, and the like shall not be used as accessory dwelling units.

• Not to be sold separately

  Accessory dwelling units shall not be sold apart from the principal dwelling upon the same lot where they are located.

• One accessoryAccessory useA secondary activity customarily incidental to the main use of the lot — a garage, a home office. unit per lot1 unit

  There shall be no more than one accessory dwelling unit on a lot in addition to the principal dwelling.

• Owner occupancy required

  Either the accessory dwelling unit or the principal dwelling shall be occupied by the owner of the principal dwelling as their primary residence.

• Minimum off-street parkingMinimum parkingThe number of off-street spaces a development must provide before it may open. spaces1 spaces

  There shall be a minimum of one off-street parking space with convenient access to a street for the accessory dwelling unit. The off-street parking shall be in addition to the off-street spaces required in Article X - Parking, Loading, and Circulation, for the principal dwelling.

• Special exception for internal ADUAccessory dwelling unit (ADU)A second, smaller home on a lot that already has one — a garage flat, basement flat or backyard cottage. in townhouseTownhouseA single-family home sharing side walls with its neighbours, each on its own lot.

  A special exception shall be required when an internal accessory dwelling unit is proposed in a single-family attached townhouse.

• Zoning inspection permit required

  A zoning inspection permit is required for an accessory dwelling unit.