How many square feet is a roof on a 1200-square-foot house?

The size of the roof on a 1,200 sq. ft. house is usually larger than the home’s square footage because roofs have slopes, overhangs, and design variations. On average, the roof area is about 1.15 to 1.5 times the home’s square footage.

• A simple 1,200 sq. ft. ranch-style home may have a roof of around 1,400–1,800 sq. ft.
  
• A more complex home with dormers or steep pitches may have closer to 2,000 sq. ft. or more of roof area.
  

Roofing contractors measure in “squares” (100 sq. ft. units), so a 1,200 sq. ft. home often requires 14–20 roofing squares, depending on design.