Rio Grande Valley Insurance Appraiser
Marshall Services provides IAUA CPAU-certified insurance appraisal and umpire services across the four-county Rio Grande Valley — Hidalgo, Cameron, Willacy, and Starr. The Valley sits at the intersection of two storm systems that rarely overlap this way: Gulf hurricanes and tropical systems tracking up from the south, and the spring hail corridors that sweep the flat Valley floor from the northwest, followed by flash flooding when tropical moisture stalls over terrain with limited drainage. The region's building stock compounds the problem, with a very large inventory of flat and low-slope TPO, modified bitumen, and built-up commercial roofing across McAllen, Pharr, and Brownsville alongside older residential neighborhoods where storm damage and deferred maintenance are easily confused. Coverage structure matters too: Cameron and Willacy counties fall inside TWIA's coastal windstorm territory, so wind may run through a separate windstorm policy while flood runs through NFIP and remaining perils stay with the homeowners carrier. We appraise hurricane, hail, wind, wind-driven rain, and flood-related property damage claims for policyholders, carriers, and counsel, documenting every engagement with Xactimate estimates calibrated to local Valley pricing and FAA Part 107 drone imagery. Serving McAllen, Brownsville, Harlingen, South Padre Island, Edinburg, Mission, Pharr, Weslaco, San Benito, Port Isabel, Raymondville, and Rio Grande City. Se habla espanol.
After a Named Storm Passes: What Appraisal Actually Settles
When a tropical system or hurricane moves through Hidalgo, Cameron, Willacy, or Starr County, the hardest disputes are rarely about whether damage exists — they are about how much of the loss belongs to wind versus wind-driven rain versus rising water, and what it costs to repair. Appraisal addresses only that last question: the amount of loss. Whether a particular loss falls under your windstorm policy, your NFIP flood policy, or your homeowners policy is a separate coverage determination that the carrier makes and, where the parties disagree, a court resolves. The appraisers and the umpire do not decide coverage. Understanding that boundary keeps the appraisal focused where it can actually move a stalled file — on scope and pricing.
On Valley coastal losses, the amount-of-loss questions that recur most are the extent of uplift and fastener damage on low-slope TPO and modified bitumen systems, the difference between storm-created openings and pre-existing wear on aging membranes, interior repair scope after water enters through a wind-compromised envelope, and the drying and rebuild cost where humidity and slow drainage extend the damage. Each of these is a measurable, documentable scope item — not an opinion — which is why detailed evidence tends to narrow the gap faster than argument does.
How the Appraisal Clause Works on a Valley Windstorm Claim
If your policy contains an appraisal provision — most Texas property and TWIA windstorm policies do, though you should always check your own — either party may invoke it in writing once the two sides have reached an impasse on the amount of loss. Each side then names a competent, independent appraiser. The two appraisers select a neutral umpire; if they cannot agree, one is appointed. The two appraisers inspect and exchange positions, agree on every line item they can, and submit only the genuine points of difference to the umpire. An award agreed to by any two of the three is binding as to the amount of loss.
A realistic Valley timeline runs a few weeks to a few months, driven mostly by inspection scheduling, roof access on multi-story or commercial buildings, and how far apart the two estimates start. Coastal claims after a widespread event can move slower simply because so many properties are being inspected at once. The documents that matter most are the policy declarations and appraisal clause, the carrier's estimate and your own estimate, prior inspection reports and photographs, and any dated storm data tying the damage to the event.
Documenting a Coastal Loss the Panel Can Rely On
Evidence carries a windstorm appraisal. We document every engagement with Xactimate estimates built to line-item detail and calibrated to local Valley labor and material pricing, FAA Part 107 drone imagery for roofs that are unsafe or impractical to walk, and, where water intrusion is at issue, moisture mapping that separates active saturation from cosmetic staining. Where relevant, dated wind-speed and storm-track data help anchor the loss to a specific event rather than to accumulated wear — a distinction that drives many coastal disputes.
For the peril-specific and coverage-structure detail behind these claims, see our hurricane damage insurance appraisal page and, for wind coverage on Cameron and Willacy County properties, our TWIA windstorm insurance appraisal page.
Bilingual Service Across the Valley
Appraisal correspondence, inspections, and findings are available in English and Spanish for Valley policyholders and counsel — see our Spanish pages for McAllen and Brownsville. To invoke your appraisal clause or ask whether appraisal fits your situation, contact Marshall Services or call 972-322-0752.
Frequently Asked Questions
What makes Rio Grande Valley storm claims different?
Three things stack up in the Valley that rarely appear together elsewhere in Texas.
First, the peril mix: the Valley catches Gulf hurricanes and tropical systems, spring hail corridors sweeping the Valley floor, and the flash flooding that follows when tropical moisture stalls over flat terrain with limited drainage.
Second, the building stock: a very large inventory of flat and low-slope commercial roofing across McAllen, Pharr, and Brownsville, alongside older residential neighborhoods where deferred maintenance and storm damage are easy to confuse.
Third, the coverage structure: Cameron and Willacy counties sit in TWIA territory, so wind coverage may run through a separate windstorm policy while flood runs through NFIP and everything else stays with the homeowners carrier. One storm, three policies.
Which counties do you cover in the Valley?
We appraise claims across the four-county Rio Grande Valley: Hidalgo, Cameron, Willacy, and Starr.
That includes McAllen, Edinburg, Mission, Pharr, Weslaco, Donna, San Juan, Alamo, and Mercedes in Hidalgo County; Brownsville, Harlingen, San Benito, Los Fresnos, Port Isabel, and South Padre Island in Cameron County; Raymondville and Lyford in Willacy County; and Rio Grande City and Roma in Starr County.
Does TWIA apply to my Valley property?
It depends on which county you are in. Cameron and Willacy are first-tier coastal counties within TWIA's territory, so wind and hail coverage there is frequently written through a TWIA windstorm policy rather than your homeowners policy. Hidalgo and Starr counties sit outside that territory.
This matters because it changes which policy responds to wind damage, and it changes the deadlines that govern the claim. See our detail on TWIA coastal windstorm appraisal for how those files are handled.
Do you work with Spanish-speaking property owners?
Yes. Our McAllen, Brownsville, Harlingen, and South Padre Island pages are available in Spanish, and we handle Valley engagements in Spanish or English.
Appraisal documentation itself — the Xactimate estimate, the inspection record, the award — is prepared in English because that is what carriers and umpires work from, but the conversation about your claim does not have to be.
What does an appraisal cost in the Rio Grande Valley?
You pay your own appraiser and the insurer pays theirs. If the two appraisers cannot agree and an umpire is required — about 5% of files — that fee is split equally.
Typical appraiser fees run $1,000 to $5,000 depending on property size and complexity, compared with $20,000 to $50,000 or more for litigation. Most Valley disputes resolve in 90 to 120 days.
Can one appraisal decide which policy covers wind and flood damage in the Rio Grande Valley?
No—appraisal determines the amount of loss under a policy, not which policy covers wind or flood damage. For a property with separate homeowners, windstorm, or flood coverage, the applicable carrier first addresses coverage. If a policy contains an appraisal clause and a valuation disagreement remains, each side selects an appraiser under that policy; a neutral umpire breaks a tie.
What determines the cost of having an appraiser handle my claim?
Cost depends on the assignment rather than a fixed rate. Each side pays for its own appraiser, and when a neutral umpire is needed the two sides share the umpire's fee. What we quote reflects the property's size and type, the number of structures, how complex the loss is, and travel. A fee is quoted before any work begins.
Does an appraisal award bind both the policyholder and the carrier?
Under a typical appraisal clause, yes. An award signed by any two of the three participants — the two appraisers and the umpire — is binding on the amount of loss. The carrier then applies the policy's deductible and other terms to that amount. Appraisal settles the amount of loss; it does not decide whether the policy covers the damage.
How long does the appraisal process usually take?
It usually runs in weeks to a few months, though timing varies with scheduling and the size and complexity of the loss. Once appraisal is invoked, the carrier names its appraiser, the two appraisers inspect the property and exchange positions, and a neutral umpire is brought in only if they cannot agree. That is generally faster than the years a lawsuit can take.
When is it worth invoking the appraisal clause?
Appraisal is generally worth considering when coverage has been accepted, the remaining dispute is about the amount of loss, the gap is meaningful, and ordinary negotiation has stalled. It does not resolve a denial of coverage, because appraisal determines valuation rather than whether damage is covered. If your policy contains an appraisal clause, that clause governs whether appraisal is available and how it must be invoked.