The biggest investment for an owner builder when building a home is the materials package. This is why everyone seems to ask this question first! Unfortunately, it’s a question that cannot really be accurately answered early on in the process. Several decisions have to be made and many steps have to be taken first. The most important thing that influences the cost of the materials is the type of home and type and quality of materials. You could be building a stick built home from 2x6s, a SIP or ICF home, a log home, hay bale, post and beam, steel framed, or any of a number of different types of homes using various building materials with a wide range of costs. A lot of research on the internet is one of the best ways to get the information you need. But, here are a couple of ideas that should help you with this question: The materials package itself will usually cost between 30 to 50% of the overall homebuilding cost. The most traditional approach (i.e. stick built out of 2x6 lumber) is probably going to be the cheapest if you’re using outside labor If you’re a DIY owner builder, doing a lot of work yourself, products that are easy for you to install yourself would likely save the most money in the long run. Accurate pricing of home building materials will need to wait until the house plans are prepared and materials lists are made.