As applied to a building or structure, a change or rearrangement in the structural parts, or an enlargement or diminution, whether by extending on a side or by increasing in height, or the moving from one location or position to another.

A space having 1/2 or more of its floor-to-ceiling height above the average level of the adjoining ground and with a floor-to-ceiling height of not less than 6 1/2 feet. A basement shall be counted as a story for the purposes of height measurement or the determination of square footage or floor area.

A person, except family, occupying any room or group of rooms forming a single, habitable unit used or intended to be used for living and sleeping, but not for cooking or eating purposes, and paying compensation for lodging or board and lodging by prearrangement for a week or more at a time to an owner or operator. Any person occupying such room or rooms and paying such compensation without prearrangement for less than a week at a time shall be classified for purposes of this chapter not as a roomer, boarder or lodger but as a guest of a commercial lodging establishment (motel, hotel, inn, bed and breakfast, tourist home).

That percentage of the lot area covered by building area.

That area of a lot that has no development restrictions. The building envelope shall not include the area of any required setbacks (except for driveways which would cross yards), buffer yards, natural features with 100% protection standard and the portion of those natural features that may not be developed or intruded upon as specified in § 27-1900, "Natural Resource Protection Standards."

A vertical distance measured from the elevation of the finished grade at the front of the building or structure to the mean roof height of the building or structure.

The rear line of the minimum yard, as herein designated for each use and each district, measured at a distance equal to and no greater than the minimum front yard from the street line as defined in § 27-251, "street line." For exceptions, see § 27-230(d), "lane lot."

The minimum distance between buildings. The minimum building spacing shall be measured from the outermost wall or projection, excluding bay windows, chimneys, flues, columns, ornamental features, cornices and gutters. These exceptions may encroach no more than two feet.

A space with less than 1/2 of its floor-to-ceiling height above the average finished grade of the adjoining ground or with a floor-to-ceiling height of less than 6 1/2 feet. A cellar is not counted as a story for the purposes of height measurement or the determination of square footage or floor area unless the cellar is used for dwelling, office or business purposes.

Real estate, portions of which are designated for separate ownership and the remainder of which is designated for common ownership solely by the owners of those portions. Real estate is not a condominium unless the undivided interests in the common elements are vested in the unit owners.

A condominium is a unit with all of the following characteristics:

An unenclosed patio or porch attached to or immediately adjoining a dwelling unit.

A measure of the number of dwelling units per unit of area. Density shall be expressed in dwelling units per acre.

Any manmade change to improved or unimproved real estate, including but not limited to, buildings or other structures, mining, dredging, filling, grading, paring, excavation or drilling operations.

Any room or group of rooms located within a residential building and forming a single housekeeping unit with facilities which are used or intended to be used for living, sleeping, cooking and eating by one family.

A person who is employed or is engaged in gainful activity. For the purposes of this chapter, the term shall refer to the maximum number of employees on duty at any time at a place of business whether the employees are full- or part-time. If shifts are involved in which two shifts overlap, it refers to the total of both shifts.

One or more persons related by blood, foster relationship, guardianship, marriage or adoption and, in addition, any domestic servants or gratuitous guests thereof; or one or more persons who need not be so related, and in addition, domestic servants or gratuitous guests thereof, who are living together in a single housekeeping unit and maintaining a single cooking facility. A roomer, boarder, or lodger shall not be considered a member of the family.

See § 27-204(b), "area."

The ratio of the floor area to the lot area as determined by dividing the floor area by the lot area.

An activity for gain customarily carried on in a dwelling, or in a building or structure accessory to a dwelling, clearly incidental and secondary to the use of the dwelling for residential purposes.

A soil that is saturated, flooded or ponded long enough during the growing season to develop anaerobic conditions that favor the growth and regeneration of wetlands vegetation. Wetlands vegetation are those plant species that have adapted to the saturated soils and periodic inundations occurring in wetlands. The following soils, classified in the "Soil Survey of Bucks and Philadelphia Counties, Pennsylvania," U.S. Department of Agriculture, Soil Conservation Service, July 1975, are hydric soils:

Those surfaces which do not absorb water. All buildings, parking areas, driveways, roads, sidewalks, and any areas in concrete, asphalt and packed stone shall be considered impervious surfaces within this definition. In addition, other areas determined by the Township Engineer to be impervious with the meaning of this definition will also be classed as impervious surfaces.

A measure of the intensity of use of a piece of land. It is measured by dividing the total area of all impervious surfaces within the site by the base site area.

Natural or artificial bodies of water which retain water, exclusive of retention basins. Artificial ponds may be created by dams, or result from excavation. The shoreline of such waterbodies shall be measured from the spillway crest elevation rather that permanent pool if there is any difference. Lakes are bodies of water two or more acres in area. Ponds are any waterbody less than two acres in area.

Areas around lakes and ponds measured 100 feet from the spillway crest elevation.

A transportable, single-family dwelling unit intended for permanent occupancy, office, or place of assembly, contained in one unit, or in two units designed to be joined into one integral unit capable of again being separated for repeated towing, which arrives at a site complete and ready for occupancy except for minor and incidental unpacking and assembly operations and constructed so that it may be used without a permanent foundation. For the purposes of this chapter, any inhabited mobile home shall be considered a detached dwelling unit and as such shall be subject to all applicable regulations in this chapter or other Township ordinances. As a structure, a mobile home shall be used only in conformance with § 27-304 and Parts 4 through 13.

An parcel of land in a mobile home park, improved with the necessary utility connections and other appurtenances (accessory attachments) necessary for the erection thereon of a single mobile home which is leased by the park owner to the occupants of the mobile home erected on the lot.

See § 27-304(B4).

A dwelling unit erected on a foundation and made of one or more sections built in a factory. The completed unit shall meet the building code in effect.

Open space is land used for recreation, agriculture, resource protection, amenity, educational or municipal use. Open space is accessible to residents of the Township and/or the development as approved by the Township, except in the case of agricultural lands where access may be restricted. Open space is protected by the provisions of this chapter and the Subdivision and Land Development Ordinance [Chapter 22] to insure that it remains in such uses. Open space does not include land occupied by nonrecreational or noneducational buildings, public roads or rights-of-way; nor does it include the yards or lots of dwelling units or parking areas for those dwelling units as required by the provisions of this chapter. Open space for recreational, educational or municipal uses may contain impervious surfaces; and such surfaces shall be included in the calculation of the impervious surface ratio prior to subdivision or land development approval by the Township. Refer to § 27-1903, "Open Space in Residential Developments," for limitations on the use of open space for buffer yards, utility easements, community sewage systems and/or stormwater management improvements.

A measure of the intensity of land use. It is arrived at by dividing the total amount of open space within the site by the base site area.

See § 27-2001(1).

A permanent and nontransitory occupancy of a dwelling unit where the occupancy of the dwelling unit is stable, permanent, and increases the strength and continuity of the community.

A parcel or parcels of land intended to have one or more buildings or intended to be subdivided into one or more lots.

All land area within the site as defined in the deed. This area shall be determined from an actual site survey rather than from a deed description.

The area of the site remaining after subtracting land which is not contiguous land previously subdivided and road and utility rights-of-way from the site area. See § 27-1901(b)(1) for the specific calculations.

The area of the site which may be altered, disturbed or regraded for development purposes. The net buildable site area could contain buildings, roads, parking areas, sewage systems and stormwater management facilities. The net buildable site area would not contain required open space, recreation areas and natural resource protection areas. See § 27-1901(b)(7) for the specific calculations.

The nonbuildable site area is the portion of a tract to be subdivided for single-family detached dwellings in the AP District that may not be developed pursuant to the provisions of this chapter. Land on this tract must be reserved from development if it includes the portion of prime farmland or farmland of statewide importance that must be protected in accordance with § 27-304(b)(2) of this chapter, or the portion of a natural resource that must be protected in accordance with § 27-1900 of this chapter.

The maximum number of lots or dwelling units, the maximum impervious surfaces, the net buildable site area and the minimum required open space as calculated under the provisions of § 27-1901(b)(10), "Site Capacity Summary."

Areas subject to periodic flooding listed in the Official Soil Survey provided by the United States Department of Agriculture, Natural Resources Conservation Service, Web Soil Survey (http://websoilsurvey.nrcs.usda.gov/), as soils having a flood frequency other than none.

Areas of at least 1/4 acre in size where the average slope exceeds 15% which, because of this slope, are subject to high rates of stormwater runoff and, therefore, erosion and flooding.

That portion of a building included between the surface of any floor and the surface of the floor next above it, or if there is no floor above it, then the space between the floor and the ceiling next above it and including those basements used for the principal use. A half story is a space under a sloping roof which has the line of intersection of the roof and wall face not more than three feet above the floor level, and in which space the possible floor area with head room of five feet or less occupies at least 40% of the total floor area of the story directly beneath.

That story with its floor level immediately above the average finished grade level of the adjoining ground at any particular point or side of the building.

A public way used or intended to be used for passage or travel by motor vehicles and/or to provide access to abutting properties.

The dividing line between the street and the lot. The street line shall be the same as the legal right-of-way; provided, that where a future right-of-way width for a road or street has been established, then that width shall determine the location of the street line.

A combination of materials assembled, constructed or erected at a fixed location on or in land or water, including a building or a mobile home, whether or not affixed to the land.

Those which measure at least 10 inches dbh (diameter at breast height of 4 1/2 feet above the ground).

Those services customarily rendered by public utility corporations, municipalities, or municipal authorities, in the nature of electricity, gas, telephone, water and sewerage, including the appurtenances used in connection with the supplying of such services (buildings, wires, pipes, poles and the like).

An intermittent or perennial stream of water, river, brook, creek or swale identified on USGS (United States Geodetic Survey) or SCS (Soil Conservation Service) mapping; and/or delineated Waters of the Commonwealth.

Those areas that are inundated or saturated by surface or groundwater at a frequency and duration sufficient to support, and that under normal circumstances do support, a prevalence of vegetation typically adapted for life in saturated soil conditions, including swamps, marshes, bogs, fens and similar areas.

The transitional area extending from the outer limit of the wetland. For the purposes of this chapter, the wetlands margin shall extend 100 feet from the wetland boundary or the limit of the hydric soils, whichever is less.

Areas comprised of one or more acres of mature or largely mature trees in which the largest trees measure at least six inches dbh (diameter at breast height or 4 1/2 feet above the ground). The woodland shall be measured from the drip line of the outer trees. Woodlands are also 10 or more individual trees which measure at least 10 inches dbh and form a contiguous canopy.