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.
Concrete foundations: For a modest sized home, a concrete foundation will cost you easily between $20,000 and $30,000. Factor in a subfloor and finished flooring, youâll be lucky to stay under $40,000.raditionally, home construction starts with a concrete basement foundation. Depending on the situation there are other options that can be more durable and affordable that will better protect your home air quality. The first factors to consider when designing the foundation of a home are lot size and soil conditions.