The volunteer panel that oversees New Canaan’s Historic District—the area around God’s Acre, generally speaking—last week voted 5-0 to approve a plan to build a mudroom and three-car garage onto an Oenoke Lane home. Just part of the 1962-built Colonial at 20 Oenoke Lane is located within the district, according to a map on the town website. As such, the Historic District Commission’s interest in the homeowner’s project is “focused on what you are doing on the east side of the house, where you are doing a major addition which is in District,” Commission Vice Chair Carl Rothbart said during the appointed body’s July 22 meeting, held via videoconference. “What you are adding at the bedrooms and back of the house really is beyond our purview,” he said. Darien-based architect Neil Tod Hauck, representing the homeowners, said a glass-enclosed mudroom would lead to the new two-story garage on the east side of the house, with a metal roof featuring three “doghouse” dormers and topped with a cupola.