Q Which is more economical, adding first-floor square footage to my small house that will require a whole new floor plan ... of the extra costs of a second-story addition will include engineering ...

In the end, a second story is a ... place on the second floor and features on the roof such as a chimney, vents or dormer windows. Reinforcing the foundation to handle the addition’s weight ...

Nazim Nice, the principal architect at Seattle’s Motionspace Architecture and Design, says the floor plans of many traditional ... achieved through a second-story addition, he says.