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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.
New home construction cost per square foot build cost is a frequently sought reference number. The challenge with using cost per square foot as a way to budget a home is that cost per square foot excludes* the following factors: