How Ordinance or Law Coverage Works in Homeowners Insurance

If a fire destroys your home and local building codes have changed since it was built, rebuilding it exactly as it was may not even be legal — and your standard homeowners policy probably won't cover the full cost of meeting the new code. That gap is exactly what ordinance or law coverage is designed to close, and understanding how much of it your policy already includes — and how much you'd need to add — can make a real difference to what you pay out of pocket after a loss, as the worked example below shows.

What ordinance or law coverage actually does

If a covered loss like a fire forces you to rebuild, you may be legally required to meet the current code, not just restore what burned down, and even a guaranteed replacement cost policy generally won't pay that extra expense without a separate endorsement. Ordinance or law coverage is the part of your policy — built in to some degree, and expandable through an endorsement — that pays toward those code-driven extra costs during a covered repair. The Insurance Information Institute's consumer guide illustrates this with a coastal home: if wind destroys it and a new code requires rebuilding on stilts, that can add $30,000 to the rebuilding cost, and while a standard HO-3 excludes that extra cost, a homeowner can purchase an Ordinance or Law endorsement to cover it.

Why even a guaranteed replacement cost policy doesn't fully solve this

A guaranteed replacement cost policy sounds like it should cover everything, since it pays whatever it actually costs to rebuild your home as it was, even if that exceeds your policy limit. That protection matters when construction costs spike after a widespread disaster, but it generally stops at rebuilding the home *as it was* — it does not extend to the added cost of upgrading the home to meet current building codes. Keep in mind that a guaranteed replacement cost policy may not even be available if you own an older home, and it isn't offered in every state or by every insurer. To close the code-upgrade gap, you'd still need a separate Ordinance or Law endorsement.

How much ordinance or law coverage is already built in

The standard ISO HO-3 form — the most common homeowners policy — lets you use up to 10% of your Coverage A dwelling limit for increased costs tied to the enforcement of an ordinance or law that requires or regulates construction, demolition, remodeling, renovation or repair of the damaged part of your home after a covered loss, under the standard ISO form HO 00 03 10 00, though state and insurer variations may apply. This 10% is additional insurance, meaning it doesn't reduce your Coverage A limit — it's extra money on top. But it comes with real limits: the HO-3 form excludes the loss in value to your home caused by the ordinance or law itself, and it excludes costs to test for, monitor, clean up or otherwise respond to pollutants, even when the 10% provision otherwise applies. You can find the specifics of how your policy treats this under the "ordinance or law" heading in the Section I exclusions part of your policy.

Worked example: rebuilding after a fire under new codes

Picture a homeowner with a standard HO-3 policy carrying a $300,000 Coverage A dwelling limit, which also happens to be exactly what it would cost to rebuild the home to its original, pre-fire specifications. A fire destroys the home, and because local building codes have changed since it was built, the rebuild must now include $45,000 of code-required upgrades — things like updated electrical and fire-safety systems or structural changes — on top of the $300,000 needed just to replace the original structure. Under the standard HO-3's built-in ordinance or law provision, the homeowner can access up to 10% of that $300,000 Coverage A limit — $30,000 — toward the increased costs tied to the code-required construction and repair. That $30,000 covers two-thirds of the $45,000 gap, but it leaves $15,000 in code-upgrade costs that the homeowner would have to pay out of pocket, unless they had purchased a higher Ordinance or Law endorsement limit before the fire happened. An Ordinance or Law endorsement pays a specified amount toward bringing a home up to code during a covered repair, so a higher purchased limit could have closed some or all of that remaining $15,000 gap, depending on the amount chosen.

A fire rebuild with code-required upgrades

On a hypothetical $300,000 Coverage A dwelling limit, the standard HO-3's built-in ordinance or law provision makes up to $30,000 available for code-required increased costs after a covered loss.

• coverage a limit: 300000
• Formula: coverage a limit * 0.10
• Result: 30000

Built-in ordinance or law coverage under a standard HO-3 policy, illustrated with a hypothetical $300,000 Coverage A limit

Where to look in your policy

• Section I exclusions — search for the heading "ordinance or law" to find how your policy treats code-driven rebuild costs.
• Coverage A (dwelling) limit of liability — this is the figure the built-in 10% ordinance or law allowance is calculated from under a standard HO-3 form.
• Endorsements/riders page — this is where a separately purchased Ordinance or Law endorsement, with its own specified coverage amount, would be listed.

Coverage type	What it pays for code upgrades	Key limit
Standard HO-3 (no endorsement)	Increased costs from code-required construction, demolition, remodeling, renovation or repair of the damaged part of a covered building after a covered loss	Up to 10% of the Coverage A dwelling limit, as additional insurance on top of that limit
Guaranteed replacement cost policy	Rebuilding the home as it was, even above the policy limit, if construction costs rise	Generally excludes the added cost of upgrading to current building codes
Ordinance or Law endorsement	A specified amount toward bringing the home up to code during a covered repair	Limit is set by the endorsement you purchase, in addition to what the standard form already provides

1. Find the "ordinance or law" heading in the Section I exclusions part of your policy to see how it's currently handled.
2. Check your Coverage A dwelling limit, since the standard HO-3's built-in ordinance or law allowance is calculated as up to 10% of that figure.
3. Ask whether your home has features or systems that predate current local building codes, since that's when ordinance or law costs are most likely to apply after a covered loss.
4. If you have a guaranteed replacement cost policy, confirm separately whether code-upgrade costs are covered, since that feature generally doesn't include them.
5. Consider purchasing an Ordinance or Law endorsement, which pays a specified amount toward bringing a house up to code during a covered repair, beyond what a standard policy provides.

Key takeaways

• A standard homeowners policy generally won't pay the extra cost of rebuilding to meet updated building codes, even under a guaranteed replacement cost policy, unless you add an Ordinance or Law endorsement.
• The standard ISO HO-3 form does include up to 10% of your Coverage A limit as built-in additional insurance, but only for increased costs tied to code-required construction, demolition, remodeling, renovation or repair of the part of your home damaged by a covered peril, and this can vary by state or insurer.
• That built-in 10% does not cover the loss in value to your home caused by the ordinance or law itself, or pollutant-related testing and cleanup costs.
• In a worked example with a $300,000 Coverage A limit and $45,000 in code-required upgrade costs after a fire, the built-in 10% covers $30,000, leaving a $15,000 gap without an added endorsement.
• You can check how your own policy treats this under the "ordinance or law" heading in its Section I exclusions.

Does my homeowners policy automatically include ordinance or law coverage?

If you have a standard, unendorsed HO-3 policy, yes, but only within the built-in limit described above, under the ISO standard form HO 00 03 10 00 — state and insurer variations may apply, so it's worth checking that limit against your own policy before you assume you're protected.

Will a guaranteed replacement cost policy cover code upgrade costs after a fire?

Generally, no. A guaranteed replacement cost policy pays whatever it costs to rebuild your home as it was, even above your policy limit, but it generally won't cover the added cost of upgrading to meet current building codes — that requires a separate Ordinance or Law endorsement.

What does an Ordinance or Law endorsement actually pay for?

It pays a specified amount toward bringing your home up to code during a covered repair, on top of whatever your standard policy already provides.

Are there costs that ordinance or law coverage never pays, even with the built-in 10%?

Yes. Even where the standard HO-3's 10% ordinance or law provision applies, it excludes the loss in value to your home caused by the ordinance or law requirement itself, and it excludes costs to test for, monitor, clean up, remove, contain, treat or otherwise respond to pollutants.

Where in my policy do I check how ordinance or law coverage applies to me?

Information about how your policy treats this coverage is found under the "ordinance or law" heading in the Section I exclusions part of your policy.

Review your Coverage A dwelling limit and your policy's ordinance or law exclusions before a loss happens, not after — the built-in 10% allowance under a standard HO-3 form may not be enough if your home predates significant code changes. Learn more about how dwelling coverage limits work at [casainsure.com/guides/dwelling-coverage-limits](https://www.casainsure.com/guides/dwelling-coverage-limits).

Sources

• www.iii.org
• www.iii.org
• www.iii.org
• www.iii.org
• www.iii.org