How to Calculate Your Home’s Replacement Cost

If disaster were to strike, would you have enough insurance to repair or replace your home?

Many homeowners take out a policy for the amount their lender requires to purchase the house and then never check on their coverage limits again. Unfortunately, this may leave them at risk of being underinsured and unable to rebuild after a loss.

Here’s how you can make sure you have enough insurance to replace your house, and why rebuilding costs can rise dramatically depending on where you live.

While every home is different, you can get a sense of the average cost to replace a house like yours. Enter your state, your county and the square footage of your home, and the calculator will consider several factors, including the cost of labor and building materials in your area, to provide an estimate.

The replacement cost of your home isn’t the same as the market value of your house. Depending on the housing market in your area, your home might sell for more than it would cost to rebuild on your land, or it might sell for less. The cost of new construction also may not be a reliable gauge, because rebuilding can involve extra expenses like demolition, cleanup and site preparation.

This is why rebuilding costs are a better way to estimate how much homeowners insurance you need.

The median cost per square foot to rebuild a home in the U.S. is $280, according to a NerdWallet analysis of residential rebuild cost data provided by First Street, a climate risk modeling firm. This equates to a cost of about $410,000 to rebuild a typical U.S. home.

But replacement costs can vary significantly from state to state, due in part to differences in local labor and materials prices. For instance, the median cost to rebuild in Louisiana is $331 per square foot, NerdWallet’s analysis shows, while Nebraska homeowners pay about $248 per square foot.

The primary factors that determine rebuilding costs are the price of building materials and labor in your area. Those two things can fluctuate for a few reasons, including inflation and labor shortages. Tariffs and natural disasters can also influence the cost of rebuilding your home.

When estimating replacement costs, try to also factor in specifics about your home that could make restoring it more expensive. These include:

Understanding how much it would cost to replace the structure of your home is crucial to avoiding underinsurance. Unfortunately, not having enough homeowners insurance to cover a significant loss is not an uncommon scenario.

For example, researchers at the University of Colorado analyzed 5,000 policyholders who filed claims after the Marshall Fire swept through the Boulder suburbs in December 2021. Data showed 74% of these policyholders were underinsured. More than a third of the underinsured policyholders had coverage that fell significantly short, leaving them on the hook for 25% or more of the amount they would need to replace or repair their damaged homes.[0]

Once you’ve determined what your dwelling coverage should be, there are options to ensure your homeowners policy limits meet your needs.

Inflation guard is a supplemental coverage that automatically raises your policy’s coverage limits to account for inflation. This is sometimes included standard or offered as an endorsement for an additional fee. It typically increases your dwelling coverage by 2% to 4% each year to account for rising inflation, which means your premiums may go up accordingly.

Even though most homeowners policies include replacement cost coverage, it may not be enough in some cases — for example, if rebuilding costs soar after a natural disaster in your area. Extended replacement cost coverage pays an additional percentage over your limit (anywhere from 10% to 50%) if your house is destroyed by a covered loss and the cost to rebuild exceeds your policy’s dwelling coverage limits.

Guaranteed replacement coverage is usually expensive and not all insurers offer it, but it’s exactly what it sounds like. Your insurer will pay whatever it costs to rebuild your home and restore it to the condition it was in before the loss.

This kind of insurance may be particularly helpful if you have an older home. Ordinance or law coverage pays for the additional costs of complying with current building codes if you have to rebuild. Some insurers offer ordinance or law coverage up to 10% of your dwelling limit, so check with your agent to see if your policy already covers this.