The best way to save money is to create a budget and stick to it. Get several estimates from reputable contractors in your area. Make sure you are comparing apples to apples. Proposals should include exactly what materials are being quoted. Watch out for "Bait & Switch" methods that try and get you to pay more. Ask whether the company allows homeowners to do some "work equity," such as painting. Balance high- and low-end materials. Keep your home's footprint the same as much as possible.