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Average Home Building Costs Per Sq Ft: Shell Option. The average home building cost per sq ft for a home is far more uniform than the finished cost per square foot. A shell does not include the foundation, landscaping, fixtures, cabinetry finishes or appliances. Sometimes it does not even include drywall. It usually doesnât include the plumbing or electrical wiring either, though sometimes rough plumbing and wiring are included. The average home building cost per sq ft for a shell is about $25 per square foot with a range of about $22 to $30 per square foot.
The average cost per square foot to build a house varies from region to region. This is due not only to the cost of materials and labor, but also because of different coding requirements. For example, new homes in the Southeast have to meet current hurricane standards.ivide that by the square footage to get an idea of the cost per square foot to build a new home. Of course, the above cost estimate includes all the materials on top of labor, so you might want to do more specific work to get a better estimate.