Commercial property insurance in Houston

What a Houston underwriter asks a building owner

• RoofAge, type, last replacement and whether the policy pays replacement cost or actual cash value on it for wind and hail.
• Wind and hail deductibleUsually a percentage, and a percentage of the insured value, not of the loss.
• Distance to the bayA small part of Harris County east of Highway 146 is in the state windstorm association’s territory; the rest of the county is not.
• FloodA separate policy. Harris County’s flood control district says about two thirds of Harvey’s structural damage was outside the mapped 100-year floodplain.
• Freeze historyWhat broke in February 2021 and what was changed afterward.
• NeighborsThe City of Houston does not have zoning, so the use next door is a question, not an assumption.

The coverage parts are the same as anywhere (how commercial property coverage is put together). An owner who leases the whole building out usually buys it as lessor’s risk; there is more on warehouses and office buildings on their own pages.

Wind, hail and the deductible that decides the claim

The Texas Department of Insurance tells policyholders that a deductible may be a dollar amount or a percentage, and to work out what a percentage means in dollars before buying. The Office of Public Insurance Counsel adds the part people miss: the percentage is figured on the amount of insurance, not on the claim. On a building insured for several million, a few percent is more than many roof repairs cost.

Three kinds of storm deductible are in use, and the same office describes them this way:

• Hurricane deductible: applies to damage from a storm categorized as a hurricane.
• Named storm deductible: typically triggered once the National Weather Service names the storm, so it usually takes in tropical storms as well.
• Wind/hail deductible: the broadest; it typically applies to any wind or hail event.

2024 showed why the wording matters. On May 16 a derecho brought what the National Weather Service’s Houston office called a swath of winds over 100 miles an hour through the metro area, with widespread damage and a couple of tornadoes. It had no name. On July 8 Hurricane Beryl made landfall near Matagorda with 80-knot winds, passed over the west side of the metro area as it weakened to a tropical storm, and brought hurricane-force gusts inland across the region. A policy with only a named-storm deductible treated those two losses differently; a policy with a wind/hail percentage applied it to both. How these deductibles work.

Then the roof. The department’s review standards for commercial property filings allow actual cash value on roofs where the cause of loss is wind or hail. That means a quote can look like replacement cost for the building while paying a depreciated amount for the part most likely to be damaged. I read each offer for that line.

The windstorm association: only east of Highway 146

Owners sometimes assume all of Harris County is “windstorm territory”. It is not. The Texas Windstorm Insurance Association’s area is the 14 first-tier coastal counties plus parts of Harris County east of Highway 146, and only where the property is inside the city limits of La Porte, Morgan’s Point, Pasadena, Seabrook or Shore Acres. Downtown, the Energy Corridor, the northwest warehouses and nearly everything else in the county are outside it, and wind there is insured in the regular or surplus lines market, usually inside the property policy.

For a commercial building that is inside the area:

• What it covers: wind and hail only. Fire, theft, liability and everything else stay on a separate policy, so the two have to be fitted together.
• Who qualifies: an applicant who has been denied wind and hail coverage by at least one authorized insurer writing in the area.
• What the building needs: a windstorm certificate of compliance (the WPI-8 series) showing it was built or repaired to the applicable code, with limited exceptions.

The Texas FAIR Plan is not a substitute for building owners elsewhere in the county; the department describes it as a residential property program. How the windstorm association works.

Flood is a separate policy, and Chapter 19 raises the rebuild

The department’s commercial property guide says it directly: most policies exclude flood, and to be protected you buy a separate flood policy, from an insurer that sells it or from the National Flood Insurance Program, with a 30-day wait before it takes effect. In Houston that is not a coastal-only concern. The National Hurricane Center’s Harvey report counts more than 300,000 structures flooded in southeastern Texas and notes that 9 of the 19 official river gauges in Harris County recorded all-time high flood stages. The flood control district’s figure, about 68 percent of structural damage outside the mapped 100-year floodplain, is why I ask about flood on every building, mapped or not.

After Harvey the City rewrote its floodplain rules, Chapter 19 of the Code of Ordinances (Ordinance 2018-258). The Floodplain Management Office now permits construction in the 500-year floodplain as well as the 100-year floodplain and floodway, and new structures there must be at least 2 feet above the 500-year flood elevation. For an owner that has two insurance consequences:

• Repairs can trigger the newer standard. A badly damaged building in the regulated floodplain may have to come back higher or floodproofed. Ordinance or law coverage on the property policy deals with code upgrades after a covered loss; check how much of it you have.
• The federal flood policy has a building limit. Larger buildings need excess flood above it, placed separately. How flood insurance works.

February 2021: the freeze loss

The department’s report on the February 11 to 19, 2021 winter event counted 511,473 insurance claims statewide, and Harris County had more than any other county, 112,163. The damage came from freezing pipes during sustained or rotating power outages. Commercial claims were the slow ones: sixteen months later 13.4 percent of commercial property claims were still open, against about 1 percent of residential ones.

Underwriters have asked the same questions since:

• Sprinkler systems: wet or dry, where the risers and exposed lines run, and whether those spaces are heated.
• Vacant suites: whether heat is kept on and water shut off or drained. Property forms restrict water damage in vacant space, and a largely empty building needs its own kind of policy.
• Shut-offs and monitoring: who can close the main at 3 a.m., and whether there is a low-temperature or water-flow alarm.
• Income: whether loss of rents is long enough for a repair season when every plumber in the city is booked.

No zoning, and the Ship Channel

The City’s Planning and Development Department states that Houston does not have zoning and that its development codes do not address land use. In practice a warehouse can share a property line with apartments, a body shop or a chemical distributor. Underwriters handle that by asking about adjacent exposures one building at a time, so I ask for the neighbors on all four sides, and for tenants’ operations in a multi-tenant building.

East of downtown, the Texas Comptroller describes the Port of Houston as a 25-mile-long complex of public and private facilities that includes the nation’s largest petrochemical complex. Buildings in and around that corridor draw extra questions: what tenants store, how far the nearest plant or tank farm is, and whether the business income coverage would respond if an incident nearby closed the street without damaging your building. Usually that takes specific wording, so it is worth reading before it is needed.

What to send me

• Address, year built, square footage, stories and construction type for each building.
• Roof details: type, age, last replacement and any hail or wind claims on it.
• Tenants and what they do, with the leases’ insurance clauses and a rent roll.
• Flood information: flood zone, an elevation certificate if you have one, and whether the building took water in Harvey or since.
• Windstorm certificate of compliance, if the building is east of Highway 146.
• Freeze history: what was damaged in February 2021 and what was changed.
• Sprinkler, alarm and electrical updates, with years.
• Neighboring uses on each side.
• Current declarations pages for property, wind, flood, liability and umbrella, and five years of loss runs.

Common questions

General information about insuring commercial buildings in Houston and Harris County as of November 2026, not legal advice. Windstorm association territory, deductible rules and the City’s floodplain ordinance change; confirm your property’s status with the Texas Windstorm Insurance Association, the Texas Department of Insurance and the Houston Floodplain Management Office. Coverage depends on underwriting and the terms, conditions and exclusions of the policy actually issued.