Ordinance or Law Coverage: The Gap Harvey Exposed in Thousands of Houston Policies

The 50 Percent Rule and Why It Matters in Houston

In Houston and throughout Harris County, a rule applies to flood-damaged structures that many homeowners don't learn about until they're standing in a gutted house: if the cost to repair a damaged building exceeds 50 percent of the structure's pre-damage market value, the entire structure must be brought into compliance with current building codes before it can be reoccupied.

This 'substantial damage' rule comes from the National Flood Insurance Program's Community Rating System — a framework that municipalities adopt in exchange for discounted NFIP flood insurance rates for their residents. Harris County and most of its incorporated cities participate. The rule exists for good reasons: it limits the ongoing exposure of repeatedly flooded properties and ensures that rebuilt homes are safer.

But the financial implication is significant. A 1970s-era ranch home that took $120,000 in flood damage — just over 50 percent of a $230,000 market value — is required to comply with 2026 building codes in its entirety. That means electrical panels brought up to current NEC standards, plumbing materials meeting current specifications, HVAC systems meeting current efficiency requirements, and in many cases, elevating the finished floor above the base flood elevation.

The cost of these upgrades can range from $30,000 to well over $100,000 depending on the age and condition of the home. And here's the problem: your standard homeowners policy — or even your flood policy — only covers the cost of repairing the damage as it was. Code upgrades are a separate line item that falls to the homeowner unless the policy specifically covers them.

What Ordinance or Law Coverage Actually Covers

Ordinance or law coverage (sometimes called building code upgrade coverage) addresses this gap. It comes in three parts, which together cover the financial impact of code requirements on a covered loss:

Coverage A: The loss to the undamaged portion of the building. If a covered peril damages 40 percent of your home and code requires you to demolish the other 60 percent (because the home cannot be safely repaired to current standards without), Coverage A pays the value of the undamaged portion that you're now required to tear down.

Coverage B: The cost to demolish and remove the undamaged portion of the structure — the physical cost of the tear-down and debris removal required by code.

Coverage C: The increased cost of construction. This is the most commonly needed component — the additional cost to rebuild the damaged (or entire) structure to current code rather than to pre-loss specifications.

Standard Coverage Is Usually Not Enough

Most standard Texas homeowners policies include ordinance or law coverage, but at a sublimit — typically 10 percent of Coverage A (your dwelling coverage). On a home insured for $350,000, that's $35,000 in total ordinance or law protection.

Post-Harvey experience in Houston's inner-loop neighborhoods revealed that $35,000 frequently was not sufficient. Homes built in the 1950s through 1970s that required full code compliance during rebuilds saw upgrade costs in the $60,000–$120,000 range — two to four times the standard sublimit.

Ordinance or law coverage limits can typically be increased to 25, 50, or even 100 percent of Coverage A. The premium increase for raising this limit is usually modest — often a few hundred dollars per year — compared to the potential exposure. For any home built before 1990, we recommend reviewing this coverage as a priority.

Common Code Upgrades Required in Houston Rebuilds

Electrical systems: Homes built before the mid-1990s often have electrical panels and wiring that don't meet current National Electrical Code standards. A full electrical upgrade during a rebuild can cost $8,000–$20,000.

Plumbing: Galvanized or polybutylene pipe — common in homes built through the 1980s — is no longer code-compliant. Replacing the plumbing system during a rebuild typically costs $10,000–$25,000 depending on the size of the home.

HVAC: Current energy efficiency standards and zoning requirements often cannot be met by retrofitting older systems. A complete HVAC replacement during a code-compliance rebuild can add $15,000–$30,000.

Foundation elevation: For homes in flood-prone areas, current codes may require elevating the finished floor above the base flood elevation. This is the most expensive ordinance-driven requirement a Houston homeowner is likely to face. A complete elevation project for a slab foundation home — the standard Houston construction type — typically runs $150,000–$250,000 all-in when structural lift, utility reconnections, skirting, stairs, permits, and interior finishing are included. The structural lift alone for a 1,800 sq ft slab home elevated 3 feet commonly runs $100,000–$160,000 before any of those additional components.

Add these together for a 1960s ranch home that requires full code compliance, and it's easy to see how the cost reaches $80,000–$130,000 beyond the standard repair estimate — and beyond the standard 10 percent sublimit.

How to Review Your Coverage

Look at your policy declarations page for ordinance or law coverage or building code upgrade coverage. Note the limit — it will likely be expressed as a percentage of Coverage A or as a dollar amount. Compare that to the age of your home and the scope of upgrades that would be required in a significant loss.

If you're in a flood-prone neighborhood and your home is more than 30 years old, this is not a theoretical exposure. It is the coverage gap that cost the most Harvey victims the most unexpected money. It is also one of the most affordable gaps to close.