Storm Damage Insurance Appraisal | Marshall Services

Storm damage insurance appraisal is the contractual process for settling a disagreement over the amount of a storm loss. Here is how it works and when it applies.

By Marshall Smith, IAUA CPAU Certified Insurance Appraiser · Published August 12, 2026 · 4 min read · Filed under Storm Damage

Storm damage insurance appraisal is the process both a policyholder and an insurer agreed to in the policy for settling a disagreement over the amount of a covered storm loss — not whether coverage exists, but what the loss is worth. When two well-prepared estimates for the same roof, structure, or interior arrive at different numbers, the appraisal clause lets each side name an independent appraiser, and, if those two cannot agree, brings in a neutral umpire to decide the difference. It is a structured, evidence-based alternative to litigation, and it applies across the range of storm perils.

When the appraisal clause applies to a storm claim

Most residential and commercial property policies contain an appraisal provision. It becomes relevant once coverage is established and the remaining dispute is about valuation or scope — the quantity and cost of what needs to be repaired or replaced. Appraisal generally does not resolve questions of coverage, causation exclusions, or policy interpretation; those are legal issues. If the disagreement is purely over how much the storm damage costs to restore, appraisal is usually the right tool. If a claim was denied outright, it's worth understanding the difference first, which we cover in our guide to appraisal after a denied claim.

The storm perils this covers

"Storm damage" is an umbrella term, and each peril leaves its own signature on a building. Marshall Services handles property appraisal across all of them:

• Hail damage — bruising and fracturing of roofing, dents to soft metals, and collateral indicators.
• Wind damage — lifted or missing shingles, displaced flashing, and envelope failures.
• Tornado damage — severe structural loss, often involving total or near-total valuation.
• Hurricane damage — combined wind and wind-driven rain across large areas.
• Water and storm-related flooding — intrusion, saturation, and secondary interior loss.

Each of these pages goes deeper into the peril-specific details. This post explains the process that ties them together.

What the independent appraiser and umpire actually do

An appraiser's job is to determine the amount of loss based on the observed damage, the policy's valuation terms, and accepted repair standards — not to advocate. A neutral, independent appraiser reaches the number the evidence supports, whichever direction it points. When the two appraisers cannot reconcile their figures, the umpire reviews both positions and the underlying documentation and issues a decision on the disputed items. An award signed by any two of the three (two appraisers, or one appraiser and the umpire) sets the amount of loss. You can read more about that neutral role on our insurance umpire services page.

How storm damage is documented and priced

A credible appraisal rests on a credible record. That typically includes:

• A methodical inspection of every affected slope, elevation, and interior space, with dated photographs tied to specific damage points and a scale reference where relevant.
• A line-item estimate, usually built in Xactimate, that states scope, measurements, materials, and unit pricing so both sides are comparing the same components.
• Drone imagery for steep or hard-to-reach roof areas, allowing safe, high-resolution documentation of surfaces that are difficult to reach on foot.

The goal is a file complete enough that a third party can follow the reasoning from observed damage to final figure.

Walking through the process, step by step

1. Demand for appraisal. One party invokes the clause in writing.
2. Appraiser selection. Each side names a competent, independent appraiser.
3. Umpire selection. The two appraisers agree on an umpire, or one is appointed if they cannot.
4. Independent inspections and estimates. Each appraiser evaluates the loss and prepares a valuation.
5. Reconciliation. The appraisers compare positions and resolve as much as they can between themselves.
6. Umpire decision. Remaining differences go to the umpire.
7. Award. Any two of the three sign, setting the binding amount of loss.

When appraisal fits — and when another path may serve better

Appraisal is well suited to genuine valuation and scope disagreements where coverage is not in question. It is generally faster and less costly than a lawsuit. Where the dispute turns on coverage, exclusions, or alleged bad faith, those matters fall outside appraisal and may call for other forms of alternative dispute resolution or legal counsel. Matching the mechanism to the actual disagreement is the first step toward a fair resolution.

Where we work

Marshall Services provides property storm damage appraisal and umpire services across Texas, Louisiana, Oklahoma, Colorado, and California, serving homeowners, commercial owners, and multi-family properties.

Request a review

If your storm claim has stalled on the amount of loss, a neutral evaluation can clarify where the numbers diverge and why. Marshall Smith, CPAU, offers a free consultation to discuss whether appraisal is the right path for your claim.

Call Marshall Services at 972-322-0752 to talk through your options.