How Much Does A House Addition Cost Per Square Foot. Complexity of architectural design. For smaller homes it costs 90000 to 120000.
According to the latest estimates the median price for each square foot for a home in the United States is 123. The national average for an addition is around 40000. Cost to build a house per square foot by region Generally the per-square-foot cost to build a home ranges from 100 to 160 nationally.
A second-story addition often involves adding an entire level to your home rather than just an extra room.
Cost to Build a Second-Story Addition Building a second-story addition usually runs between 100 and 300 per square foot. The national average for an addition is around 40000. Cost to build a house per square foot by region Generally the per-square-foot cost to build a home ranges from 100 to 160 nationally. 15 to 20 per square foot.
