The average deck size is 10Ã—12 feet (basic rectangular design), and you can expect to pay $35 per sq. ft. for construction. This price includes excavation and site .
The cost of a professionally built pressured-treated wood deck starts at about $15 per square foot, including materials. The cost for an elaborately built deck using costly hardwoods or composite materials can run about $35 per square foot.
Decks R Us reports the average pressure treated deck costs $27-$32 per square foot whereas a synthetic deck will cost $38-$45 per square foot. Get an .