Town of Wilton, NH

Zoning Ordinance (2020)

18.0 Phasing of Developments

18.1 Indicators of Growth Impact.

The Town of Wilton hereby determines that the presence of any of the following conditions constitutes an indicator of Growth Impact. An Indicator of Growth Impact occurs when:

  1. The number of dwelling units for which building permits have been issued (whether for single family or multi-family structures) for either:
    1. the preceding six (6) month period (as measured on June 30 and December 31) equals or exceeds 1.6 percent of the total number of dwelling units existing in the previous calendar year; or
    2. the preceding twelve (12) month period (as measured on June 30 and December 31) equals or exceeds 3.2 percent of the total number of dwelling units existing at the end of the two (2) previous six (6) month periods.
    The planning board will collect dwelling unit data twice a year. Data as of December 31 will be collected by March 1 of the succeeding year. Data as of June 30 will be collected by September 1 of the same year. Data collected will consist of the total number of dwelling units in the town's existing housing stock and the number of building permits issued over the previous 6 month period. (Amended March, 2009)
  2. The Wilton and Wilton-Lyndeborough school districts shall notify the Planning Board within 1 month if the number of enrolled students in either the Wilton Elementary School or the Wilton-Lyndeborough Cooperative High School (or other public school erected hereafter) exceeds eighty percent (80%) of stated capacity as defined by the School Board. (Amended March, 2009)
  3. The Planning Board shall determine if the number of dwelling units contained on a proposed subdivision plan or site plan submitted to the Planning Board equals or exceeds 1.3 percent of the then existing dwelling units as measured for the previous calendar year. (Amended March, 2009)

18.2 Monitoring Growth Indicators.

It shall be the responsibility of the Planning Board to monitor the Indicators of Growth Impact and to make public reports of the presence of one or more of the Indicators.

18.3 Phasing of Subdivision and Cluster Developments.

If the Planning Board finds through its monitoring that either Indicator 18.1 a, b or c has occurred, then the Planning Board may require the phasing of pending and future subdivision and cluster development proposals as provided in New Hampshire RSA 674:21. The purpose of phasing developments is to minimize a strain on municipal resources caused by the sudden introduction of a substantial number of new dwelling units and to allow the Town to plan and absorb the growth over a longer period of time so as to avoid severe impact on Town services and resources.

  1. The Planning Board may require phasing of a subdivision or cluster development for a period of up to five (5) years for a project containing up to seventy-five (75) proposed dwelling units or individual lots. For a project exceeding seventy-five (75) dwelling units or individual lots, the Planning Board may negotiate a longer period of time over which phasing of the proposed development is to occur, based on the size of the project and the potential impact of the project on the Town.
  2. Once a phasing plan is approved by the Planning Board with dates of allowed construction for each phase, the approved plan shall be recorded with the Hillsborough County Registry of Deeds.
  3. The phasing of developments as provided for herein shall remain in effect until the issuance of the next public report as provided in section 18.1, at that time the Planning Board shall determine if the phasing of developments is required in accordance with the provisions of this section.


(Repealed March 2000.)