The CPA specifies that at least 10% of the funds each year must be allocated for each of the following: open space, recreation, historic resources, and affordable housing. Up to 5% may be used for administering the funds. The balance may be appropriated for any of the three purposes, including the recreational use of open space. There are some restrictions on how funds can be used. Tisbury has had between $500,000 and $900,000 available to appropriate each year since 2006.