Tiki Island, TX Sheds, Carports, Garages and accessory dwelling Units for Sale Sheds for sale in Tiki Island, TX have an average price of $23550.00 with an average square footage of 737. The average cost per square foot is $31.98. ShedHub.com is aware of 1 dealers within 20 miles of Tiki Island TX. The most popular shed styles at these locations are High Barns, Mini Barns, and Garages.