A firebox not only has to withstand the extreme temperatures of a fire, it must also be able to withstand the expansion and contraction that happens when the firebox heats up and cools off.
A factory-built fireplace costs about $2,000 to $5,000, making it a more affordable option than adding a masonry fireplace, which can cost $10,000 or more. It is also less expensive to repair.
Costs vary greatly by region (and even by zip code). To get free estimates from local contractors, please indicate yours.