A composite deck costs around $19,227 and will recoup an average of 122 percent of its value at resale.
According to the Cost vs. Value report, in the Seattle area a wooden deck that costs around $13,084 to build will recoup an average of 106.7 percent of its value at resale. A composite deck costs around $19,227 and will recoup an average of 122 percent of its value at resale.