To beef up the stock of such land and properties, cities can adopt policies that facilitate the transfer of private land to the public.14 When property owners fail to pay taxes, cities can stop selling liens to speculators, as New York City currently does, and instead transfer tax-deficient properties into a scatter-site community land trust.15 Cities could pass “right to sell” bills, giving households at risk of foreclosure the opportunity to sell their home to the city, which would operate it as public housing.16 Cities could also institute a “right of first refusal” on home sales, as is being established in parts of Paris. Under this system, the city has a first pass at any property for sale, and can pay the seller market value for their home and convert it into social housing.17 Thanks to a ballot referendum, San Francisco’s Small Sites Program has started buying out rent-controlled buildings and transferring ownership from private landlords to community land trusts.18