Siding installation costs in Water Mill typically range from $9,000 to $25,000 for a full home replacement, depending on your home’s size, the siding material you choose, and any additional features like enhanced insulation or moisture barriers. Vinyl siding, which is popular on Long Island, generally runs $7-$12 per square foot installed.For a typical 2,000 square foot project, you’re looking at $14,000-$24,000. The final cost depends on factors like your home’s architectural complexity, the quality of materials selected, and whether you need any structural repairs before installation. We provide detailed, transparent estimates that break down all materials, labor, and additional costs so you know exactly what you’re investing in.