Core Liability · Calculator, Comparison & Guide

Commercial Flood Insurance: Calculator, Comparison Table & Guide

Houston floods outside the mapped zones. Model the NFIP cap and a private alternative.

Prong 1 · Interactive Calculator

Commercial Flood Estimator (NFIP vs. Private)

Houston floods outside the mapped zones. Model the NFIP cap and a private alternative.

Positive = above base flood elevation.

Results
LineEstimate
NFIP building limit (capped $500K) —
NFIP contents limit (capped $500K) —
Elevation factor —
NFIP premium (Risk Rating 2.0 estimate) —
Private flood premium (full values + BI) —
Value above NFIP capsExcess flood or private flood is required to close this gap. —

Illustrative math only. Rate ranges are planning bands, not quotes. Your policy wording, carrier appetite, loss history, and state decide the real number. This tool stores nothing and sends nothing.

Get the real number — Start Smart Intake

Prong 2 · Comparison Table

Commercial Flood Options

NFIP vs. private vs. excess.

CriterionNFIP (Federal)Private Primary FloodNFIP + Excess Flood
Building limit$500KUp to TIV$500K + excess
Contents limit$500KUp to TIV$500K + excess
Business incomeExcludedIncludedOptional
Basement / below-grade contentsLimitedOptionalLimited
Waiting period30 days10–15 days30 days
Replacement costACV on contentsRCV availablePer NFIP
Lender acceptanceUniversalYes (Biggert-Waters)Universal
Best fitSmall, high-risk zoneLarger or BI-sensitiveValues > $500K in mapped zone
Included
covered in base form
Excluded
not available
Optional
available by endorsement
Limited
sublimited or conditional

Prong 3 · Deep-Dive Guide

Commercial Flood in Houston & Florida: Beyond the NFIP Caps

Harvey flooded thousands of businesses in Zone X. Here's what flood actually covers and where NFIP stops.

Flood is always excluded

Every commercial property policy excludes flood, surface water, and storm surge. A separate policy is the only way.

  • NFIP through a WYO carrier
  • Private flood for higher limits and BI
  • Excess flood above NFIP

NFIP limits and gaps

$500K building, $500K contents, no business income, ACV on contents.

  • Any value above $500K is uninsured without excess
  • 30-day waiting period unless tied to a loan closing
  • Risk Rating 2.0 prices on distance to water and elevation, not just zone

Houston reality

Over half of Harvey's flooded structures were outside the SFHA. Zone X is not 'no risk'; it's cheaper flood insurance.

  • Zone X commercial NFIP often $1,500–$4,000/yr
  • Private flood in Zone X is competitive and includes BI
  • Elevation certificates reduce cost

Frequently Asked Questions

My lease says the landlord handles flood — am I covered?

The landlord's flood policy covers the building, not your contents or income. Tenants need their own contents flood.

Does flood cover mold?

Only mold resulting directly from the flood, and NFIP limits it. Prompt remediation is required.

What about sewer backup?

Not flood. It's a separate endorsement on the property policy (often $25K–$100K).

Related: commercial flood insurance Houston · NFIP commercial · private flood business · flood zone AE

Turn the estimate into a quote

The Smart Intake takes about two minutes. A licensed advisor reviews your commercial flood exposure against 30+ Texas and Florida markets. Nothing from the calculator above is stored or sent.

Start Smart Intake

Or call (281) 671-0069

All numeric rates are 2026 Texas/Florida planning bands compiled by the agency for illustration; they are not filed rates and must be reviewed by a licensed agent before publication. Coverage descriptions are summaries only and are subject to the terms, conditions, and exclusions of the actual policy. Submitting a request does not bind coverage.