Monomoy, MA

Monomoy refers to the narrow, shifting spits east of Chatham’s Nauset Coast, where historic dune cottages sit on lots patented under 17th-century sea claim grants. These parcels often lack municipal water or sewer, relying instead on deep wells and septic systems designed for porous sand. Structures are typically single-story wood-frame homes with asphalt shingle or cedar clapboard siding, elevated on stone piers to avoid moisture. Many have minimal overhangs to reduce wind lift during northeasters.

The area’s isolation shapes building practices and material choices. Construction timing is constrained by seasonal ferry schedules for heavy materials, and crews often work quickly during short summer windows. Roofs slope steeply to shed snow and sand, while dormers are rarely used to minimize surface area. Windows are usually small and casement-style, sealed tight against salt-laden winds that erode paint and wood over time.

Access remains limited—some roads are only passable by four-wheel drive or at low tide—and zoning reflects preservation goals. Renovations must retain original footprints and materials where possible, and new builds face height and bulk restrictions to preserve sightlines across the dunes. Flood zones extend far landward, and flood vents are required beneath elevated structures. Fire safety adds complexity, with hydrants spaced far apart across the barrier peninsula.