The Carrier Already Has Photos of the Roof

What Donegal’s ZestyAI expansion means when your documentation meets theirs at claim time

On October 22, 2026, ZestyAI announced that Donegal Insurance Group is adding Z-PROPERTY across its personal lines portfolio. Z-PROPERTY scores roof condition, roof complexity, and lot debris from aerial imagery. Donegal is not a mega-carrier, and that is the point: this is a regional carrier buying a verified, pre-loss record of every roof it insures.

Donegal did not start from zero. In 2025 it adopted ZestyAI’s Roof Age, which pins down when a roof was replaced by cross-checking building permits against more than 20 years of historical aerial imagery. The new deal extends the same approach from one data point — age — to the condition of the whole property.

The record now exists before the loss

A carrier used to learn about a roof when a claim arrived. The adjuster’s inspection was the first structured look, and the contractor’s photos were often the second. That order is reversing: the first structured look now happens at underwriting, before any storm, and it sits in the carrier’s file waiting.

Z-PROPERTY is built from high-resolution aerial imagery — overhead, angled, and 3D — run through more than 90 computer vision models, per ZestyAI. Its roof condition model sorts roofs into five condition classes and names the specific defects it sees: staining, water ponding, missing shingles, tarps, and other signs of degradation. Roof age, roof condition, and visible wear are no longer things a carrier has to take anyone’s word for.

A record like that does not stay in underwriting. Data bought to price a policy is data that exists when the same roof shows up in a claim, and claim teams work with what the file already holds. The restorer’s documentation no longer enters an empty room. It enters a room where the carrier’s version of the roof is already on the table.

Where the two records meet

The first meeting point is pre-existing condition. If the carrier’s imagery shows staining, ponding, or a tarp on the roof before the date of loss, expect that image to anchor the conversation about what the storm actually did. Damage that predates the loss is the oldest denial ground in the business; the difference now is that the carrier arrives with dated pictures instead of an argument.

The second meeting point is depreciation. ZestyAI sells Roof Age as a verified input to underwriting and rating, and it markets Z-PROPERTY as a way to match deductibles and ACV treatments to verified roof condition. A verified age and a verified condition class give a carrier a documented basis for how much life it says the roof had left — and ACV math is where roof settlements are won and lost.

The third meeting point is the supplement fight. A supplement asks the carrier to pay for damage or scope it missed. When the carrier’s opening position rests on a scored, dated, portfolio-wide dataset, a supplement built on a handful of phone photos and a line-item list is arguing uphill. The question the adjuster is really asking — why should I believe your record over ours? — has to be answered by the documentation itself.

None of this makes the carrier’s record right. Aerial imagery is a view from above, at a moment in time, interpreted by a model. It cannot see underlayment, decking, fastener patterns, or what is happening in the attic. It can mistake shadow for damage and miss damage that only shows from the ladder. The carrier’s record is strong on chronology and weak on everything below the surface — and that split is exactly where a good field record wins.

What stands up next to an aerial record

Documentation that stands up to a carrier’s dataset is built like evidence, not like a photo dump. The standard is simple to state: a reviewer who was never on the roof should be able to reconstruct the roof’s condition, slope by slope, from your file alone.

• Date and place on everything. Every photo carries a timestamp and a location. An undated photo argues with a dated aerial image and loses on chronology before anyone discusses content.
• Every slope, every elevation. Shoot the whole roof in a fixed pattern, then the details. A complete record makes the carrier’s partial view the incomplete one.
• Close-ups with scale. Creased shingles, lifted tabs, soft spots, and prior repairs get close-range photos with a tape, coin, or chalk for scale. The aerial model names defect categories; your close-ups are how a named category gets confirmed or refuted.
• Below the surface. Document decking, underlayment, fasteners, and attic conditions wherever access allows. This is the ground the carrier’s record cannot cover, and it is where condition disputes are actually settled.
• Measurements, not impressions. Counts, dimensions, and test results written down beat adjectives. “Brittle” is an opinion; a pliability test described and photographed is a finding.
• Pre-loss records where they exist. Inspection reports, prior repair invoices, permits, and dated photos from before the loss answer the carrier’s pre-loss imagery on its own terms.

The shops that do this already know the pattern from the estimate side: the better record usually wins the argument. (Restoration Intel’s field protocol for roof damage assessment and insurance documentation covers the on-site half of this standard.)

The standard is the strategy

It is tempting to read a deal like Donegal’s as carriers arming up against contractors. Read it instead as the documentation standard going public. The carrier has stated, in a purchase, what it considers a defensible record: dated, verified, property-wide, and built before anyone had a claim to argue about. Any shop can hold its own files to the same description.

That is the arms race worth running. Not louder supplements — better records. When both sides arrive with documentation, the argument moves from who is believed to what the evidence shows, and the contractor who documented the roof from the ladder, the deck, and the attic holds evidence no aerial pass can produce.

More carriers will buy this category of data; Donegal is one announcement in a steady line of them through 2026. The time to raise a shop’s documentation standard is before its next roof claim is measured against a record the carrier built years earlier.

The broker-side read of the same announcement — how to explain the score to homeowners — is on Risk Coverage Hub: Your Client’s Roof Now Has a Score.

Sources: ZestyAI announcement (October 22, 2026) and ZestyAI product pages. Product figures are vendor-stated.

Updated Nov 1, 2026 — added the free roof record first-look card, carrier aerial file match pack, and aerial record rebuttal bot book downloads to this guide.