Learn More › Highlights The cost to add a second story is about $175,000, but a typical average is $100,000 to $250,000. The size of the addition and the home are the biggest cost factors, but ...

Adding a full second-story addition costs between $100,000 and $600,000 depending on the size of your home. ... Considering the cost of a floor plan designer to choose the best plan for your budget; ...

So, how much does it cost? All told, the cost to add a second story usually runs between $300 and $500 per square foot, making a typical project cost $150,000–$200,000 for 1,000-sq.-ft. homes ...