New Hampshire passed workforce housing legislation in 2008.
In a publication from the Londonderry Planning Department per RSA 674:58-61 "All citizens of the state benefit from a balanced supply of housing which is affordable to persons and families of low and moderate income. Establishment of housing which is decent, safe, sanitary and affordable to low and moderate income persons and families is in the best interests of each community and the state of New Hampshire, and serves a vital public need. Opportunity for development of such housing shall not be prohibited or unreasonably discouraged by use of municipal planning and zoning powers or by unreasonable interpretation of such powers."
What does this have to do with Moultonboro? The law requires every municipality "to provide reasonable and realistic opportunities for the development of workforce housing, including rental housing". There is a complicated formula to determine if a community has met the legal requirement. It takes into account median income and the assessed value of residential properties.