A. Cosco & Son LLC

A. Cosco & Son is a Watertown general contractor with a long local permit trail behind it: 148 projects listed on BuildZoom, covering roofing, kitchen and bath remodels, additions and landscaping in Watertown, Belmont, Brighton, Newtonville and Waltham. The company describes itself as carpentry-first — carpentry, additions and home remodeling — and says it works Watertown, Waltham, Belmont, Cambridge, Arlington, Newton and Wellesley. Its Houzz profile adds accessory dwelling units and basement remodeling alongside two project photos, and BuildZoom also lists sunrooms and greenhouses, pool houses, landscape work, retaining walls and vinyl fences. Frank Cosco is named as the owner. BuildZoom lists a Massachusetts home improvement contractor registration for the business; look the registration up yourself on the state's register before you sign anything. If you are adding on, finishing a basement or putting up an accessory dwelling unit in Boston's western suburbs, this is a builder whose permitted work sits close by. Ask which recent jobs in your town you can go and see, and get the scope, the schedule and the allowances into the contract before work starts.