We've got plenty of room in the side yard of our Wilmington, North Carolina, home to either add a home office to the house or build a room addition separate from the house. To attach it, it would wrap around a corner of the house a bit. Attaching requires changing and extending the roof line, breaking through a wall, and the main electrical service must be moved. The existing HVAC will accommodate the 100 square foot room. Is it likely to be more expensive to build the room addition onto the house, or to make a separate building?
Ray L. ~ Wilmington, North Carolina