The Pacific and New England regions of the United States have the highest cost per square foot to build homes, states the National Association of Home Builders. Excluding lot value, the median price per square foot for Pacific contractor-built homes, including Alaska and Hawaii, is $145.00; in New England, $143.00.
The building cost figures are based on construction of single-family houses started in 2013, states the National Association of Home Builders. Houses built on land the builder owns, with the plan of selling both house and land in one transaction, are called spec houses. Contractor-built homes are usually more expensive per square foot than spec houses. For new single-family spec houses, the Middle Atlantic region, including New York, is the most expensive at $131.00 per square foot, compared to $103.00 per square foot for contractor-built homes in the region.