Renovating may not be a party, but M.J.S. Contracting Corp. has raised the roof literally. Established primarily as a masonry-contracting firm, M.J.S. has turned its focus to residential remodeling, functioning primarily as a general contractor (but still specializing in masonry and carpentry). With more than 15 whole-house renovations completed in the area, and 30 baths and 10 kitchens remodeled each year, M.J.S. literally has its hands full. New Rochelle residents are probably familiar with projects carried out by Stephen Moliterno and his father, Carmine Mel Moliterno, including those at New Rochelle schools, Beckwith Pointe beach club, and the offices of WVOX radio station.