Their average costs range from $25,000 to over $100,000. A second-story addition is also considered high-cost because it involves extensive roof work and averages about $300 to $500 per square foot.

It’s common for second-floor additions to cost $150,000 to $200,000 for an additional 1,000 square feet of space. Home Extension In some cases, you may only need to do a home extension to get ...

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 ...

Since kitchen renovation costs of an existing space cost an average of $150 per square foot, bump-out kitchen extensions can cost as little as $5,000, whereas full additions will top $30,000.

“Their current home value is around $400,000, but to build that 2,000-square-foot addition was about $400,000. You just can’t overbuild the neighborhood.” ...