A popular home addition is to use an "alcove" type space in your home and convert it into a refrigerated wine cellar. Depending on if there is demolition to do, you can figure a total package budget from $40,000 to $55,000. Keep in mind you MUST not use frameless doors in a wine cellar as it does not provide an adequate seal to keep the cooling inside. Here we have small, framed doors with hidden hinges for a smooth, contemporary look.