Is your home insured for enough to rebuild? Check your dwelling limit (Coverage A) against what it would cost to rebuild your house today, not what it would sell for. Michigan rebuild costs rose 5.15% in the year to July 2026, the second-fastest increase in the country, so a limit set a few years ago, or before a remodel, may now fall short.
The short version: Your dwelling limit should equal the cost to rebuild your house with the same size, materials and finishes at today's labor and material prices. Market value includes land and doesn't measure that. Review the limit every renewal and after any remodel, and ask about extended replacement cost so a bad estimate or a post-storm price spike doesn't come out of your pocket.
Rebuild cost is not market value
Michigan's insurance regulator defines market value as "the current value of your home, including the price of land." Your homeowners policy doesn't insure the land, and a buyer's price reflects the neighborhood, the school district and the market. Rebuild cost depends on something else: the square footage, the construction, the finishes, and what contractors and materials cost in your area right now.
The two numbers can be far apart in either direction. A home in a high-demand area may sell for more than it costs to rebuild. An older home with plaster walls, custom millwork or a finished basement may cost more to rebuild than it would sell for.
Why the number moved this year
- Michigan was near the top. Residential reconstruction costs rose 3.8% nationally from July 2025 to July 2026, and 5.15% in Michigan, second only to Kansas, according to Verisk's Q3 2026 reconstruction cost analysis.
- Labor is the driver. In the same report, labor rates rose 4.7% while material costs rose 2.1%, citing ongoing skilled labor shortages.
- The longer view is steeper. The federal producer price index for goods used in residential construction was about 53% higher in August 2026 than in February 2020 (preliminary figures).
Many policies include an inflation adjustment, but it's an index applied to whatever estimate you started with. If the starting estimate was low, or you finished the basement, redid the kitchen or added a room since then, the index won't fix it.
The 80% rule: why being underinsured hurts even small claims
Most people assume being underinsured only matters if the house burns to the ground. Under many policies, it also cuts partial claims. ISO's 2011 homeowners form (HO 00 03 05 11, an edition many carriers still build from) pays full replacement cost on a damaged building only if your dwelling limit is at least 80% of the full replacement cost immediately before the loss. Below that, the payment is reduced in proportion. Carriers' forms vary, but most use a similar condition.
Here's how that works on a home that would cost $1,000,000 to rebuild but is insured for $700,000:
- 80% of the rebuild cost is $800,000. You carry $700,000, which is 87.5% of that.
- A $100,000 kitchen fire would pay about $87,500 before your deductible, not $100,000.
- A total loss would pay no more than $700,000, leaving roughly $300,000 to rebuild the house you had.
Michigan law allows insurers to require more than 80% insurance-to-value as a condition of a replacement cost policy, as long as they also offer a replacement cost form that requires only 80% (MCL 500.2117). Either way, the safe target is 100% of an accurate rebuild estimate.
Coverages that protect you from a bad estimate
- Extended replacement cost. Adds a cushion above your dwelling limit, commonly 25% or 50% under ISO's endorsement, if a covered loss costs more than expected. Some high-value carriers offer more or no cap at all. You generally have to insure to full value and report major improvements to keep it.
- Ordinance or law. When a damaged house has to be rebuilt to current building codes, the upgrades can be expensive. ISO's 2011 homeowners form allows up to 10% of the dwelling limit for those costs, and more can be added.
- Loss of use. Pays the added cost of living elsewhere while your home is repaired, for the shortest time it reasonably takes. A large rebuild can take many months, so make sure this limit fits a realistic timeline.
Your lender won't catch this for you
It's easy to assume the bank checked your coverage. Fannie Mae's current guidelines judge a homeowners policy by whether it settles losses on a replacement cost basis; they no longer test whether the dwelling limit is high enough to rebuild. Lenders protect their loan. Making sure the limit fits your house is up to you and your agent.
How to check your dwelling limit
- Find your Coverage A limit on your declarations page and the year it was last updated.
- List what's changed: finished basement, kitchen or bath remodel, additions, new roof, upgraded windows or flooring.
- Get a fresh replacement cost estimate built from your home's actual size, construction and finishes. We can run a current estimate for you based on your home's details.
- Add extended replacement cost if your carrier offers it, and check ordinance or law and loss of use.
For larger or custom homes, see our guide to high-value home insurance in Michigan. For why premiums have risen alongside rebuild costs, see why home insurance went up.
Frequently Asked Questions
How much homeowners insurance do I need to rebuild my house in Michigan?
Enough to rebuild your house at today's labor and material prices, with the same size, construction and finishes. That number comes from a replacement cost estimate, not your purchase price or market value, which includes land. Michigan rebuild costs rose 5.15% in the year to July 2026, so review the limit every year.
Should my homeowners coverage equal my home's market value?
No. Market value includes land and reflects the real estate market, while your dwelling limit should reflect the cost to rebuild the structure. Depending on the home, rebuild cost can be higher or lower than market value.
What is the 80% rule in homeowners insurance?
Under many homeowners policies, including ISO's 2011 homeowners form, a damaged building is paid at full replacement cost only if your dwelling limit is at least 80% of the home's full replacement cost. If you carry less, partial claims are reduced in proportion. Carriers' forms vary.
What is extended replacement cost?
An endorsement that pays above your dwelling limit, commonly an extra 25% or 50%, if a covered loss costs more to rebuild than expected. Some high-value carriers offer more. You usually must insure to full replacement cost and report major improvements.
Does my mortgage lender make sure I have enough coverage?
Not necessarily. Fannie Mae's guidelines focus on whether the policy settles at replacement cost, not whether the limit is high enough to rebuild. Checking the limit is up to you and your agent.
The bottom line
The most expensive surprise in homeowners insurance isn't a denied claim. It's a covered claim that pays less than the rebuild costs because the limit was set years ago and never updated.
J. Jacobs & Associates is an independent agency in Lake Orion that has insured Michigan homes for more than forty years. We write the dwelling on a replacement cost basis, run a current rebuild estimate, and compare coverage, extended replacement cost options and price across more than twenty carriers. Send us your declarations page and a list of any updates, or call (248) 693-6455. You can also start a homeowners quote online.