ยง  239-g.  Planning associations or federations. 1.  Establishment. In
  any county or counties, the municipalities  may  form  a  federation  or
  association  to  promote community or inter-community planning within or
  by such municipalities, to provide for the collection  and  distribution
  of  information  on planning, subdivision and zoning matters and kindred
  subjects and to cooperate with appropriate state and county  authorities
  in  matters  affecting the county comprehensive plan and county official
  map.
2. Appropriation, expenses. A municipal legislative body or  a  county
  legislative body, is hereby authorized to include annually in the budget
  and  raise  by taxation in such municipality or county a sum to meet the
  actual  and  necessary  expenses  of   establishing,   maintaining   and
  continuing  such  association  or  federation. Such expenses may include
  activities in this state for the purpose of devising practical ways  and
  means for obtaining greater economy and efficiency in the design, layout
  and  development  of  a municipality or county; for promoting the public
  health, safety and general welfare by means of local and inter-community
  planning, subdivision and zoning activities;  or  for  establishing  and
  maintaining information services for the benefit of its members.
Structure New York Laws
Article 12-B - County Planning Boards and Regional Planning Councils
239-C - County Planning Boards.
239-D - County Comprehensive Plan.
239-F - Approval of Building Permits, Curb Cuts, and Subdivision Plats.
239-G - Planning Associations or Federations.
239-H - Regional Planning Councils.
239-I - Regional Comprehensive Plans.
239-NN - Rights and Duties of Neighboring Municipalities in Planning and Zoning Matters.