Mountain House, CA Sheds, Carports, Garages and accessory dwelling Units for Sale Sheds for sale in Mountain House, CA have an average price of $9255.38 with an average square footage of 202. The average cost per square foot is $45.82. ShedHub.com is aware of 1 dealers within 20 miles of Mountain House CA. The most popular shed styles at these locations are High Barns, Mini Barns, and Garages.