Wondering about the cost of a house extension compared to a complete home renovation cost? In most cases, an extension will cost more than a renovation, but this will depend on what’s required. If you’re concerned about cost, it’s a good idea to consult with a company like Extensions Unlimited that offers a fixed price for extensions based on your budget. It’s important to remember that whether you opt for a renovation or an extension, the eventual cost will ultimately depend on the extent of the work you want done.