How Much Will It Cost to Extend My House?


Quick Answer

The cost of extending a home depends on what the addition consists of. The website CostHelper.com gives an average figure of $13,000 to $125,000, but the cost can vary wildly depending on a range of factors.

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How Much Will It Cost to Extend My House?
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Full Answer

Adding a bathroom is relatively inexpensive ($3,000-$6,000) if a homeowner is using existing floor space, but it is much more expensive ($25,000-$50,000) if the work is part of an extension. The situation is similar when adding a new bedroom or family room, which can often be done for less than $5,000 as a space conversion, but could potentially cost around $50,000 when the work is performed by contractors as part of an extension.

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