10′ x 16′ Ashwood Shed (CU-1) By Mary Steele on August 1, 2013 in Custom Built Sheds, Portable Building Styles We call this highly customized portable building the “Ashwood”, with its origins stemming from our popular 10′ x 16′ Cape Cod plan. The finished product almost looks like a little house. Model CU-1. Construction Features Customization Options Rent to Own