Work recently began on the fourth and final phase of the multiyear effort to restore the historic Marion Tavern at Grand View Farm on Center Street. The final work involves construction of a 26-space parking lot and the planting of trees, bushes, and grass. It also includes repair and re-creation of historic stone walls, according to Thomas Hickey, the assistant town administrator. All of the wall work will be done with stones taken from walls that are not repairable and are in the way of the parking lot. The project is expected to be completed in mid-November. The projected $450,000 to $500,000 cost is being covered with money appropriated by Town Meeting in January. The 6-acre Grand View Farm, historically used as a farm and at one time as a tavern, was acquired by Burlington in 2001. The town is restoring it for use as a meeting and function facility. Earlier work included exterior repairs to the farmhouse, construction of a replica barn, and a separate renovation of the main house interior that students from Shawsheen Valley Technical High School are carrying out with teacher supervision. The interior renovations will conclude with final plumbing and carpentry work this fall.