Each year we purchase the latest version of the National Construction Estimator from Craftsman Book Company ($97.50). The cost data in this book are averages that vary widely based on the type and quality of home being built. We use the section called "Single Family Home Costs" and apply the "Area Modification Factors" to determine local rough cost per square foot.
This free rough cost estimate should only be used for initial planning purposes. Local market labor and material supply conditions can cause wide variations in cost to build. The most accurate and detailed cost to build will come after bidding out the project to a minimum of three companies per building activity (and this bidding was not performed by Open Book Build LLC to create this cost estimate). We do not recommend buying house plans or land based on this free rough cost to build number provided by Open Book Build LLC.
This free rough cost to build is a single number. In other words, no cost breakdown is provided.
So, how accurate is this free cost per square foot number? Overall cost to build really depends on so many things including the local market conditions for labor and materials, the home design and finishes being built, the land/lot conditions where the home is being built, and local building codes. In other words, there are many unknowns that aren't accounted for in this free rough cost estimate. It is a preliminary number to help owner builders start the overall planning process.
OPEN BOOK BUILD LLC MAKES NO REPRESENTATION ABOUT THE SUITABILITY OF THIS FREE ROUGH COST PER SQUARE FOOT ESTIMATE FOR ANY PURPOSE. IT IS PROVIDED "AS IS" WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED. OPEN BOOK BUILD LLC SPECIFICALLY DISCLAIMS ALL WARRANTIES AND CONDITIONS OF ANY KIND, INCLUDING ALL IMPLIED WARRANTIES AND CONDITIONS OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE, TITLE AND -NON-INFRINGEMENT. OPEN BOOK BUILD LLC SHALL HAVE NO LIABILITY OR RESPONSIBILITY FOR ANY ERRORS OR OMISSIONS IN THIS ESTIMATE. IN NO EVENT SHALL EITHER OPEN BOOK BUILD LLC, ITS AFFILIATES OR AGENTS BE LIABLE FOR ANY DIRECT, INDIRECT, PUNITIVE, INCIDENTAL, SPECIAL OR CONSEQUENTIAL DAMAGES ARISING OUT OF OR IN ANY WAY CONNECTED WITH THE USE OF THIS FREE COST ESTIMATE.