Q1 2026 Supplement Results


Introducing CSP’s Quarterly Supplement Performance Reporting

 

Claim Supplement Pro is beginning to publish quarterly performance data from its completed supplement claims, giving restoration and roofing contractors a recurring benchmark based on real CSP results.

Table of Contents

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Key Takeaways

  • CSP is launching quarterly supplement performance reporting. Starting with Q1 2026, CSP is publishing insights from its own completed supplement claims every quarter.
  • 30.6% average approved increase. In Q1 2026, CSP’s approved supplement increases equaled 30.6% of the original carrier estimates.
  • 93.9% increased in value. CSP increased the claim value on 93.9% of the supplement claims and Additional Increases it completed in Q1 2026, including partially approved and denied claims.
  • Ice & water barrier led roofing scope, house wrap led siding. Across CSP’s Q1 2026 supplement activity, ice & water barrier was added and approved at a 46.5% rate on roofing, and house wrap at a 42.2% rate on siding.
  • Based on more than 100 completed supplement claims. Every result comes from real CSP claims, reconciled against the original carrier estimate, CSP’s claim records, and the final carrier estimate.

Every restoration contractor has seen it: the carrier estimate arrives, and it doesn’t cover the job. Line items are missing, code-required components aren’t there, and a damaged trade isn’t in the scope at all.

 

Claim Supplement Pro closes that gap every day. Now CSP is measuring how its supplements perform and publishing the results each quarter. This first edition covers supplement claims CSP completed in Q1 2026, published in aggregate, with no client, homeowner, or carrier names.

"Supplementing is an area where contractors hear a lot of opinions and promises, but there is very little real performance data available. We have the history and the data to start changing that. Our goal with these reports is to share meaningful insights from the claims we work on and, over time, build a resource that contractors can actually use."

— Vladimir Shoshon, Founder, Claim Supplement Pro, Haag Certified Reviewer – Level I

Why CSP Is Publishing Its Supplement Performance

Claim Supplement Pro publishes quarterly supplement performance results to give contractors a recurring, data-backed benchmark of what professional supplementing produces on real CSP claims.

 

Claim Supplement Pro has completed more than 10,000 insurance claim supplements for hundreds of restoration and roofing contractors since 2018. Its estimates are written in Xactimate and Symbility by a team led by founder Vladimir Shoshon, a Haag Certified Reviewer – Level I.

Q1 2026 at a Glance

CSP’s first quarterly results show strong performance on the supplement claims it completed in Q1 2026.

Result What it measures
30.6% Average approved increase over the original carrier estimates
93.9% Supplement claims and Additional Increases where CSP increased the claim value, including partially approved and denied claims

 

The 30.6% average covers every supplement claim CSP completed in the quarter, including claims that were partially approved or denied. Bringing that level of increase across all the claims a supplementing team works on is a demanding benchmark.

For every $100 in original carrier estimates

CSP’s approved supplement increases added $30.60 in Q1 2026

Indexed to $100. Based on CSP’s Q1 2026 supplement claims and Additional Increases.


Based on more than 100 supplement claims CSP completed between January 1 and March 31, 2026, including Additional Increases brought during the same period. Results reflect CSP’s own aggregated claim data across multiple U.S. states and may vary significantly by claim and by state. Past performance is not a guarantee of future results.

Where Carrier Estimates Most Often Needed More Scope

CSP tracks which line items it gets added and approved on every claim. In Q1 2026, the most common additions were standard components of a complete roof or siding system. When they are missing from a carrier estimate, the scope is incomplete, not inflated.

 

Roofing

Item added and approved Q1 2026 rate
Ice & water barrier 46.5%
Starter course 28.7%
Drip edge 26.4%
Step flashing 24.0%
Shingle roofing (tear-off and replacement) 21.7%

Ice & water barrier led roofing scope

Roofing items CSP most often got added and approved in Q1 2026

Based on CSP’s Q1 2026 roofing supplement activity, including Additional Increases, relative to the roofing supplement claims completed in the quarter.

Siding

Item added and approved Q1 2026 rate
House wrap 42.2%
Sill flashing 40.0%
Fanfold foam insulation 37.8%
Detach & reset exterior light fixtures 26.7%
Vinyl siding (replacement) 20.0%

House wrap led siding scope

Siding items CSP most often got added and approved in Q1 2026

Based on CSP’s Q1 2026 siding supplement activity, including Additional Increases, relative to the siding supplement claims completed in the quarter.

Rates are based on CSP’s supplement activity completed during Q1 2026, including Additional Increases, shown relative to the roofing or siding supplement claims CSP completed in the quarter. Repeated instances of the same item within the same supplement activity are counted once.

How CSP Gets These Results

CSP’s results come from a consistent, documentation-first process on every claim.

 

  1. Review the carrier estimate against the actual job. CSP compares the estimate with photos, measurements, and the work required, including code-required components.
  2. Document the missing scope. Each missing item is added to the estimate with a clear reason and the documentation to support it.
  3. Negotiate until the missing items are approved. CSP submits the supplement, works through the carrier’s revisions and negotiations, and makes sure the legitimate missing scope gets approved.
"Anyone can add line items to an estimate. The value of a supplementing company is in knowing what should be there, building the documentation to support it, and knowing how to work through the carrier's response to maximize the legitimate scope that gets approved. That is the part of the process CSP has spent years developing."

— Vladimir Shoshon, Founder, Claim Supplement Pro, Haag Certified Reviewer – Level I

What's Next: A Growing Supplement Benchmark

Q1 2026 is the first edition of CSP’s Quarterly Supplement Performance Reporting. CSP will publish Q2, Q3, and Q4 2026 results, followed by a 2026 annual report. Each quarterly edition will use CSP’s claim data to highlight meaningful supplement performance trends, scope patterns, and contractor insights.

"One quarter by itself is only one data point. What becomes interesting is what we learn as we continue measuring the work over time."

— Vladimir Shoshon, Founder, Claim Supplement Pro, Haag Certified Reviewer – Level I

How We Measured These Results

This report is based on more than 100 supplement claims CSP finished working on between January 1 and March 31, 2026.

 

CSP’s quarterly performance metrics are based on the supplement claims and Additional Increases CSP finished working on during the reporting period. CSP’s quarterly average increase reflects approved supplement increases recorded during the reporting period, including Additional Increases brought during the same period, compared with the original carrier estimates used for CSP’s quarterly performance measurement.

 

The claim-value increase rate includes partially approved and denied claims. Scope percentages are based on CSP’s supplement activity completed during Q1 2026, including Additional Increases, shown relative to the roofing or siding supplement claims CSP completed in the quarter. Repeated instances of the same item within the same supplement activity are counted once.

 

Each completed supplement claim was reconciled against the original carrier estimate, CSP’s claim records, and the final carrier estimate. Results are published in aggregate, with no client, homeowner, or carrier names.

 

Results are aggregated across claims in multiple U.S. states and are not broken out by state.

Frequently Asked Questions

What is CSP’s Quarterly Supplement Performance Reporting?

 

It is a recurring report in which Claim Supplement Pro publishes performance insights from its own completed supplement claims every quarter, starting with Q1 2026.

 

Who is this report for?

 

This report is intended for industry professionals, including general contractors and public adjusters. Claim Supplement Pro provides supplementing services to general contractors and public adjusters, not directly to homeowners or policyholders.

 

What was CSP’s average approved increase in Q1 2026?

 

In Q1 2026, CSP recorded a 30.6% average approved increase over the original carrier estimates, based on more than 100 completed supplement claims.

 

How often does CSP increase the claim value?

 

In Q1 2026, CSP increased the claim value on 93.9% of the supplement claims and Additional Increases it completed, including partially approved and denied claims. Results depend on the claim, the documentation, and the policy.

 

Which items are most often missing from carrier estimates?

 

Across CSP’s Q1 2026 supplement activity, ice & water barrier was added and approved at a 46.5% rate on roofing, followed by starter course, drip edge, and step flashing. On siding, house wrap led at 42.2%, followed by sill flashing and fanfold foam insulation.

 

Can I expect the same results on my claims?

 

Not necessarily. These results reflect CSP’s own aggregated claim data for Q1 2026 across multiple U.S. states. Every claim involves unique circumstances, and outcomes may vary significantly depending on the damage, the documentation, the policy, the state, and the carrier’s review. Past performance is not a guarantee of future results.

 

Where do these results come from?

 

Every result comes from supplement claims Claim Supplement Pro completed in Q1 2026, reconciled against the original carrier estimate, CSP’s claim records, and the final carrier estimate, and published in aggregate without client, homeowner, or carrier names.

 

When is the next report?

 

The Q2 2026 Supplement Results are next, followed by Q3, Q4, and a 2026 annual report.

Want These Results on Your Claims?

In Q1 2026, CSP’s approved supplement increases equaled 30.6% of the original carrier estimates. If your estimates keep coming in short, CSP can review your claims, document the missing scope, and negotiate until the missing items are approved.

Request a Claim Review →
Explore our estimating services →

Results vary by claim and by state. Past performance is not a guarantee of future results.

Important Information About This Report

This report is provided for general informational purposes only and is intended for industry professionals, including general contractors and public adjusters. Claim Supplement Pro provides supplementing services to general contractors and public adjusters, not directly to homeowners or policyholders. This report is not an offer of services to homeowners and should not be interpreted as guidance for individual policyholders.

 

The results reflect Claim Supplement Pro’s own internal data from supplement work completed between January 1 and March 31, 2026. This is not an industry-wide study and does not represent the results of other supplementing companies, contractors, or carriers.

 

Every insurance claim involves unique circumstances, and supplementing outcomes may vary significantly from claim to claim, depending on factors such as the damage, the documentation, the policy terms, and each carrier’s review. Past performance should not be interpreted as a guarantee of future results.

 

The reported results reflect aggregated supplementing activity across multiple U.S. states. Results may vary materially by state due to differences in applicable requirements, claim circumstances, and carrier practices. The findings should not be assumed to represent results in any particular state.

 

Nothing in this report is legal, insurance, or financial advice, and it should not be used as the sole basis for any business or claim decision. CSP’s reported results refer to supplement amounts approved by carriers. CSP is not responsible for the release, payment, or collection of claim funds.

 

Claim Supplement Pro is not affiliated with, sponsored by, or endorsed by Xactimate, Symbility, or their respective owners. Xactimate and Symbility are trademarks of their respective owners, and references to these platforms are for informational purposes only.

 

Figures are rounded to one decimal place and published in aggregate, with no client, homeowner, or carrier names. CSP may refine its methodology in future editions.


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