Area and Development Controls; Dimensional Requirements. The purpose of this subsection is to specify the area and development controls and dimensional requirements applicable to all cluster-designed subdivisions, where permitted, within Northampton Township. The regulations pertaining to maximum overall density, minimum open space ratio, maximum impervious surface ratio, maximum building coverage, minimum site area, minimum average lot area per dwelling unit, minimum building setback line and setback from right-of-way per lot, minimum front, side and rear yard, individually and in the aggregate, and the maximum height in feet and in stories shall be as specified in the performance standards and dimensional requirements shown in this subsection.
A.
In computing the maximum number of single-family detached lots which are permitted for a tract or site under the cluster design regulations, the following method shall be utilized:
(1)
The maximum number of lots shall be determined by submitting a standard subdivision plan, showing the number of building lots permitted under the area and development regulations of the applicable zoning district. The subdivision plan shall meet all other applicable provisions of this chapter and shall be drafted in accordance with the requirements for sketch plans and shall meet the design standards of Chapter 22, "Subdivision and Land Development."
(2)
The Township Engineer shall review the standard subdivision plan and shall verify the maximum number of dwelling units attainable under a standard subdivision.
(3)
When the maximum density for the entire tract under a standard subdivision has been verified in accordance with the foregoing procedure, the tract shall become eligible for development as a cluster-designed subdivision at the same maximum density.
(4)
For any cluster-designed subdivision in the AR District, the maximum number of lots allowed on any parcel within the site shall not be more than 150% of what could have been developed on that parcel under a standard subdivision plan as certified by the Township Engineer, and the maximum number of lots allowed on the entire site shall not exceed the number which could be developed under a standard subdivision plan.
B.
Performance Standards. The performance standards required for a cluster-designed subdivision site shall meet the following requirements:
C.
Dimensional requirements for single-family dwelling lots.
D.
Lot Averaging. In order to allow flexibility to treat unusual site conditions and irregularly shaped parcels and to preserve trees, watercourses and other natural features, the minimum and average lot area requirements may be employed. The minimum individual lot area for any dwelling unit shall be as shown below, provided that the average lot area for all dwelling units meets the requirements of Subsection 4C above. The lot width at building setback line and yard requirements for any individual lot for a dwelling unit which is less than the required average may be reduced by no more than 20%.
E.
The lot area and yards required for any new building or use shall not include any part of a lot that is required by any other building or use to comply with the requirements of this chapter. No required lot area and yard shall include any property, the ownership of which has been transferred subsequent to the effective date of this chapter, if such property was a part of the area required for compliance with the dimensional requirements applicable to the lot from which such transfer was made.