Question: how much does it cost to build a deck out of trex?
Answer: How much does it cost to build a 12x24 Trex deck? A typical 24' x 12' deck (288 square feet) built with Trex decking will cost between $4,244 and $10,826 for materials and installation. Trex decking materials cost $8.25 per square foot on average, while the average labor cost for decking is $7.52 per square foot.