Classic Wilmette home addition has a recipe that is easy to follow: have excellent craftsmen create great spaces. This homeowner, having formerly been a builder himself, did his homework before hiring Leader Builders to build his addition. The result was fantastic utilization of space and great attention to detail. What exactly was built? Additional basement area was added to create a game room; a large family room was added on the first floor, along with a mudroom and an office, and the kitchen was expanded. The second floor part of the addition gave the home a new master suite and balcony.