Local officials are trying for a third time to sell a town-owned parcel on Woodfall Road. A posting on the town’s website Wednesday calls for proposals from developers interested in building single-family homes on the nearly 5.3-acre property. A number of residents — including former governor Mitt Romney’s son Tagg, who owns property near the lot — last year objected to a proposal to put a hospice on the land, saying they only wanted to see residences there. Town officials agreed then to put a restriction limiting its use to single-family houses. However, community development director Glenn Clancy said the town has had a tough time marketing the property with the restriction. At a meeting last month, he said that wetlands on the site would reduce the size of three of its four buildable lots, making the parcel less appealing to home developers. Town Administrator David Kale said at the meeting that he had to turn away a developer who wanted to build a preschool on the property, based on the restriction. Selectmen have said they have renewed hope of selling the land after Town Meeting changed a bylaw that required a buyer to contribute $500,000 to an affordable-housing fund. The new request for proposals, which runs through Oct. 31, would allow developers to build fewer than four homes on the property, but also requires a $45,000 payment to the neighboring Belmont Country Club for a barrier separating the golf course from the development, and to keep a tree buffer between the new homes and existing neighbors. Selectmen previously said they hope to receive about $2 million for the property. For more information, visit www.belmont-ma.gov or contact Clancy at 617-993-2650 or email@example.com.