Most restoration contractors run into third-party review when processing insurance claims. The carrier receives your invoice, and instead of the file moving through a standard desk review, it gets routed to an outside reviewer or review firm tasked with evaluating scope, pricing, documentation, or invoice reasonableness.

It can feel adversarial because the incentives are different. The contractor is trying to get paid for the work performed. The reviewer is looking for anything they believe should be reduced, removed, clarified, or better supported. But how much does that extra review layer actually change the outcome of a water mitigation claim?

In our analysis, we are using “TPA” to refer to third-party review involvement: outside reviewers or review firms brought into the claim process to evaluate mitigation scope, pricing, documentation, or invoice reasonableness.

We compared nearly 72,000 OCS-managed water mitigation claims, separating files with identified third-party review involvement from files without it. We measured invoice size, days to first payment, committed payout as a percentage of invoiced amount, settlement rate, appraisal rate, and other factors.

The result? The overall pattern is both intuitive and clear: TPA-reviewed files are larger, slower, more disputed, and get paid on a lower percentage of the invoiced amount.

The TPA Lowdown

TPA Review Shows Up More Often on Larger Jobs

The first thing the data confirms is not a coincidence: third-party review is more common on larger water mitigation claims. The median TPA-reviewed invoice in our data is $9,283, compared to $6,698 for non-TPA files. That means the median TPA-reviewed invoice is roughly 38% larger.

That matters because larger files create more financial exposure for everyone involved. Carriers are less likely to send a small dry-out to outside review. They are more likely to send files where a few percentage points of adjustment can materially affect the final payout.

So when your invoice gets routed to third-party review, it is a signal. The carrier considers the file worth a closer look, and the contractor should treat it as a file that needs tighter documentation, faster response, and a more disciplined negotiation strategy.

They Pay Slower

Adding a review layer adds time. TPA-reviewed jobs take a median of 42 days to reach first payment, compared to 33 days for non-TPA jobs. That is a 27% longer wait, or an additional nine days before the first payment arrives.

For a contractor who has already fronted labor, equipment, materials, and overhead, those extra days matter. On one file, the delay may be manageable. Across multiple jobs in a busy season, that added lag can create real working-capital pressure.

This is one of the most important lessons in the data: third-party review does not just affect the final number. It affects cash flow along the way.

They Pay Less

The margin impact is where the pattern becomes even clearer. We measure payout as committed dollars – amounts committed through settlement, undisputed payment, and documented deductible responsibility – compared against the invoiced amount.

Across all outcomes, when we look at committed dollars against the amount billed, TPA-reviewed jobs come in about 3.5 percentage points lower than non-TPA water mitigation jobs. Among files that reached settlement, non-TPA files landed just over 2 percentage points higher than TPA-influenced files.

The gaps may look small at first, but they matter because TPA-reviewed files are larger. A few percentage points on a $9,000 invoice is real money. Across a full portfolio, those percentage-point differences compound quickly.

Some of this gap is tied to claim complexity. Larger files are more likely to be reviewed, disputed, delayed, and negotiated. But even with that context, the pattern matters because TPA involvement is a clear signal that the file needs a higher level of documentation, response, and escalation discipline.

They Dispute More Often

TPA-reviewed claims are also more likely to become formal disputes. In our dataset, appraisal is invoked on 7.2% of TPA-reviewed jobs, compared to 1.8% of non-TPA jobs. That is four times the rate.

Lower recommended payouts, line-item reductions, and documentation challenges can create more disagreement. More disagreement means more files move toward appraisal or other escalation paths.

Interestingly, TPA-reviewed jobs also settle at a slightly higher rate, roughly 3 percentage points higher than jobs without TPA involvement. So they do get resolved, they just tend to resolve for a lower percentage, on a longer timeline, and with more friction.

What This Means for Contractors

None of this means a TPA-reviewed claim is a bad claim. It means it is a different kind of claim, and it needs to be worked differently. The contractors who protect their margins on these files tend to do three things well.

Identify the reviewer quickly. The file cannot move efficiently until you know who is actually reviewing the invoice. Getting the assigned reviewer’s contact information early helps prevent the claim from sitting idle in a queue or bouncing between the carrier and the review firm.

Defend the invoice to the right person. When a comparative estimate, line-item review, or revised scope comes back, the response needs to go to the person who actually wrote it. Sending a detailed defense to the wrong party wastes time and can slow down an already delayed file. That defense also needs to be specific. General pushback rarely moves a TPA-reviewed file. Line-item support, photos, drying documentation, equipment logs, labor notes, and clear scope explanations are what give the reviewer something concrete to evaluate.

Know when to escalate. With appraisal four times more likely on TPA-reviewed files in our dataset, recognizing a genuinely stuck negotiation is a core skill. Appraisal should not be treated as a last resort that only comes after months of delay. Used correctly, it is a form of leverage that can keep a disputed file from drifting indefinitely.

The Bottom Line

A TPA is not the enemy, it ‘s a cost of doing business on many larger water mitigation losses. But it is also a signal.

When a file goes to third-party review, the claim needs tighter documentation, faster reviewer contact, more precise line-item defense, and a clear escalation strategy.

The data shows that TPA-reviewed water claims are bigger, slower, more disputed, and more likely to get paid on a lower percentage of the invoiced amount. Contractors who understand that pattern are better positioned to protect what they earned.

At OCS, we see these files every day and our job is to keep them organized, moving, and properly defended before delays and reductions become the default. We take pride in pushing every file, TPA and non-TPA, to its best possible conclusion for our contractors. If you want to see what that could mean for you, let’s chat.