The estimated cost to build is an average price per square foot for finished living square footage for a home built in your area, with typical contractor-grade materials, and typical services you would receive from a contractor, including labor costs, plumbing, electrical, basic/flat site preparation, etc. The estimated cost does not include things such as the lot on which you build, appliances, landscaping, bonus rooms, finished basements (unless a finished basement is included in the total living square footage), driveways, structural adjustments for earthquake/ severe weather/ local building codes, and other various limitations. The best thing to do before purchasing a plan is to contact local builders/ contractors and consult them about their pricing, as this will give you the most accurate pricing for your area. Exterior/interior finishes, cabinet materials, finish flooring etc. are all customer selected, so if you choose to use a higher grade material, it will have an effect on the base cost.