What is the average cost of a Home Addition per Square Foot in 2010? Price Range of Adding a Room to your House

The decision to construct a home addition is a very important one, and so it is crucial to be well informed as to the costs of such an endeavor. Materials for a home addition cost anywhere from $250 to $5,000, depending upon where you purchase them and their quality. Hiring a contractor to construct the addition is often a wise decision, unless you are a carpenter yourself. Contractors generally charge between $7,500 and $50,000 for the construction of a 10’ x 15’ bedroom. A larger second floor addition can easily run $105,000 or even as high as $225,000.