There are many considerations to factor when contemplating an addition to your home.

The national average investment for a home addition generally starts at $190 per square foot and up.
BFH Construction has been able to do additions for less.                                                             Finishes ultimately dictate the ultimate cost.   Whirlpool tubs, walk-in showers, use of stone finishes, etc. can quickly cause the "cost per square foot"  to increase.