It is always helpful to have as much information regarding costs of your renovation that you can possibly find. Research is the key difference between success and failure in any renovation, but especially in a renovating for profit scenario. Having the ability to do a personal estimate and budget yourself is so very empowering and gives you the opportunity to compare how close the builders quote is to yours and why there maybe differences. This Building Cost Calculator is a wonderful tool to help you work out the cost of your project. You can work out the costs room by room or as a complete renovating project.