Blue Ridge Portable Building (CU-9) By Mary Steele on August 1, 2013 in Custom Built Sheds, Portable Building Styles This wood portable building is built in two sizes: 12′ x 12′ and 12′ x 14′. The 12′ by 12′ has an 8′ x 12′ storage space with approx. 2′ deep porch. The 12′ by 14′ has an 10′ x 14′ storage space with approx. 2′ deep porch. Model CU-9. Construction Features Customization Options Rent to Own