Bigger footprints usually lower the cost per sq ft. Across common sizes, kits often cost $15–$25/sq ft, while installed (turnkey) totals trend $24–$43/sq ft—with 40×60 typically the best value per sq ft, 30×40 mid, and 20×40 highest per sq ft.
Bigger footprints usually lower the cost per sq ft. Across common sizes, kits often cost $15–$25/sq ft, while installed (turnkey) totals trend $24–$43/sq ft—with 40×60 typically the best value per sq ft, 30×40 mid, and 20×40 highest per sq ft.