What Does It Cost to Add a Second Floor

Generally, you can expect to pay a professional contractor between $100 and $300 per square foot to add a second story to a house, so says Cost Helper. … This works out to a total cost between $100,000 and $300,000 for an additional 1,000 square feet.

Is it cheaper to add a second story or build out?

Here’s the bottom line: When building new construction, building up with a two-story home is cheaper than building out. When remodeling, building out with a one-story addition is cheaper than adding a second story to an existing dwelling.

Can you add a second floor to an existing house?

There are many ways that additions can happen without expanding the footprint of the house: You can add another story onto a one-story (or even a two-story) home. Or you might add living space above an existing garage, porch, sunroom or other one-story wing. …