Deck costs in East Hampton typically range from $30 to $60 per square foot for professional installation, depending on materials and design complexity. A standard 12×16 deck runs approximately $5,760 to $11,520. Composite decking costs more upfront but requires virtually no maintenance over its 25-50 year lifespan. Wood decking starts at a lower price point but needs regular staining, sealing, and eventual board replacement. When you factor in long-term maintenance costs, composite often provides better value over time. Size, elevation, access challenges, and custom features like built-in seating or railings all affect final pricing. We provide detailed, fixed-price quotes so you know exactly what you’re investing before we start.