Homestead Cupola PLans Our cupola was designed to be an easy-to-build and affordable alternative to the expensive cupolas available for sale. Instead of costing several hundred dollars, the cupola uses "stock" materials such as pre-fab louver vents to keep the cost low. The prototype cost under $100, and was built and installed in just 6 hours. Plans include detailed construction drawings, and step-by-step building instructions. Plans are free with the purchase of any Homestead Design building plans. The complete cupola plans are also include in our new book, "Small Barn Plans for Owner-Buildings".