Despite freezing temperatures, sod is laid on the front yard of the Carlisle, Mass., farmstead. Garage doors are installed as well. Inside, there's plastering to do and a heating system for the barn. Meanwhile, host Kevin O'Connor tours a new Greek Revival-style house in upstate New York. On “Ask This Old House,” projects include a clogged bathtub drain, a double-hung window, insulation around a window and a low-maintenance garden for a senior citizen.