Definitions. For purposes of this § 220-9.1, the following definitions shall apply:
ACCESSORY APARTMENT
A preexisting second dwelling unit approved by the Lancaster Board of Appeals as provided at § 220-9G, prior to February 4, 2025.
ACCESSORY DWELLING UNIT (ADU)
A self-contained housing unit, inclusive of sleeping, cooking, and sanitary facilities on the same lot as a principal dwelling, subject to otherwise applicable dimensional and requirements, that maintains a separate entrance, either directly from the outside or through an entry hall or corridor shared with the principal dwelling sufficient to meet the requirements of the Building and Fire Code for safe egress. ADUs may be detached, attached, or internal to the principal dwelling. Where ADU appears in this bylaw without reference to the type of ADU, it shall be read to include both protected use ADUs and Local ADUs.
DWELLING UNIT
A single-housing unit providing complete, independent living facilities for one or more persons, including permanent provisions for living, sleeping, eating, cooking, and sanitation. This can include a housing unit within a single-family, duplex, or multi-unit development.
EOHLC
The Executive Office of Housing and Livable Communities.
GROSS FLOOR AREA (GFA)
The sum of the areas of all stories of the building of compliant ceiling height pursuant to the Building Code, including basements, lofts, and intermediate floored tiers, measured from the interior faces of exterior walls or from the centerline of walls separating buildings or dwelling units but excluding crawl spaces, garage parking areas, attics, enclosed porches, and similar spaces. Where there are multiple principal dwellings on the lot, the GFA of the largest principal dwelling shall be used for determining the maximum size of a protected use ADU.
LOCAL ADU
An ADU that is not a protected use ADU but includes rules specific to Lancaster's Zoning Bylaw.
LOT
An area of land with definite boundaries that is used, or available for use, as the site of a structure, or structures, regardless of whether the site conforms to requirements of zoning.
MODULAR DWELLING UNIT
A pre-designed dwelling unit assembled and equipped with internal plumbing, electrical or similar systems, in compliance with the Building and Fire Code, prior to movement to the site where such dwelling unit is affixed to a foundation and connected to external utilities; or any portable structure with walls, a floor, and a roof, designed or used as a dwelling unit, transportable in one or more sections and affixed to a foundation and connected to external utilities.
PRINCIPAL DWELLING
A structure, regardless of whether it, or the lot it is situated on, conforms to zoning, including use requirements and dimensional requirements, such as setbacks, bulk, and height, that contains at least one dwelling unit and is, or will be, located on the same lot as a protected use ADU or local ADU.
PROTECTED USE ADU
An attached, detached or internal ADU that is located, or is proposed to be located, on a lot in a Residential Zoning District and is not larger in gross floor area than 1/2 the gross floor area of the principal dwelling or 900 square feet, whichever is smaller, provided that only one ADU on a lot may qualify as a protected use ADU. An ADU that is nonconforming to zoning shall still qualify as a protected use ADU if it otherwise meets this definition.
RESIDENTIAL DWELLING UNIT
A structure on a lot containing not more than one single-family, two-family, or multi-family dwelling units.
RESIDENTIAL ZONING DISTRICT
Any zoning district where single-family residential dwellings are a permitted, or an allowable use, including any zoning district where single-family residential dwellings are allowed as of right, or by special permit.
TRANSIT STATION
The Montachusett Regional Transit Authority (MART) Bus Station currently located on Old Turnpike Road in Lancaster. Transit station shall also include any additional location designated by MART after the effective date of this § 220-9.1.