It can vary, but typically it costs around $25-$35 per square foot to replace a composite deck. Labor will usually cost an additional $50-$100 per hour, depending on your location.

It can cost anywhere from $50 to $250 per square foot to replace a composite deck, depending on the contractor you hire and the materials and labor they charge. Replacing a deck is a big job, so it's important to get accurate quotes from several contractors before deciding who to hire. Make sure to ask about the type of materials they'll be using (composite or wood), how long they expect the project to take, and what warranties they offer.