Photos: Hillary Clinton's life in the spotlight. Clinton waves to the media in January 1996 as she arrives for an appearance before a grand jury in Washington. The first lady was subpoenaed to testify as a witness in the investigation of the Whitewater land deal in Arkansas.
1 Adding a basement to an existing house can cost $30,000-$70,000 or more, depending on the size of the existing crawlspace or half-basement or if the house is on a slab foundation, and how much of the work is do-it-yourself and how much is done by contractors.
Construction Costs can range from $225 - $325 per square foot. (Less per square foot, if you include a finished basement.) These are the costs to construct your home ready to move into. Generally speaking these are all the costs within the perimeter of the foundation.