---
title: "the carrier's cheapest claim"
canonical_url: https://ensurance.app/guide/the-carriers-cheapest-claim
markdown_url: https://ensurance.app/guide/the-carriers-cheapest-claim.md
subtitle: "what loss control is, where it stops at the property line, and how the landscape could be funded as loss control for every carrier in the zone"
category: nature-finance
---

# the carrier's cheapest claim

*what loss control is, where it stops at the property line, and how the landscape could be funded as loss control for every carrier in the zone*

**Loss control** is the work an insurer or a risk manager does to make losses rarer or smaller before they happen. Inside a carrier, engineers inspect insured properties and write recommendations (a sprinkler upgrade, a roof tie-down, cleared brush) that the insured is expected to complete. The premium pays for the claims that still happen. Loss control is how fewer of them do.

Most of that work stops at the property line. For fire and flood, the hazard often does not. It sits in the forest above the subdivision, whose fuel load sets how hot and fast a fire arrives, and in the marsh in front of the coastal street, which cuts the waves and water that reach the first house. Those living systems can do loss control for the policies behind them, whether or not anyone pays. [**Ensurance**](/?from=guide) is how the people they protect can pay for that work. It is not the forest, and it is not insurance: it pays no claims.

:::johnson
**loss control works best where the hazard lives.** For fire and flood that is often the forest and the marsh, upstream of many of the policies in the zone, so the work could be funded once and shared by everyone who writes there.

[read the evidence first →](#the-evidence-that-landscape-loss-control-works)
:::

## what is loss control

Loss control, also called loss prevention or risk engineering, covers inspections, hazard surveys, engineering recommendations and the follow-up that checks whether they were done. A commercial property underwriter reads the engineering report before setting terms. A personal-lines carrier runs a lighter version: a roof photo, a wind mitigation form, a defensible-space check.

FM, the commercial property mutual, is the clearest case of a carrier built around it. Its pricing rests on engineering. In 2021 it said its clients had completed more than 50,000 recommendations over the prior year, covering about $700 billion of exposure, and it announced a US$600 million membership credit on 2022 renewals. That is a mutual handing good loss results back to its members as a group. It is not a per-policy credit, and finishing one recommendation does not by itself cut that policy's premium.

In the terms of this series, loss control is the **shrink** lever, next to shop and retain. It moves the expected-loss slice of the premium, and the catastrophe load only where the model credits it ([how insurance premiums are calculated](/guide/how-insurance-premiums-are-calculated?from=guide) breaks the slices out). Today the carrier itself recognizes it, in underwriting terms and, at a mutual, in credits on the result.

## a claim avoided costs less than a claim paid

The carrier's math is short. Loss ratio is losses divided by premiums earned. A claim that never happens keeps its payment, adjusting expense and reserve off the books. That is why carriers that write commercial property pay engineers at all.

The same math sets the limit. Loss control pays the carrier that funds it when two things hold: the measure reduces a loss that carrier would otherwise pay, and the carrier keeps the policy long enough to see the claim that did not come. Both hold for a sprinkler in a warehouse the carrier insures for, say, ten years. Neither holds cleanly for a forest, for example, twenty miles from the nearest policy.

## where structure-level loss control runs out

A hardened house below an untreated forest still sits in the path of a fire run. A raised slab on a coastal street still meets the water the marsh used to slow. The inspection checklist can make a structure tougher. It cannot change the fuel on the ridge or the elevation of the bay floor, and those set how bad the event is when it arrives.

Models add a lag. In the Graveline Bay insurance pilot on Dauphin Island, Alabama, the project team reported that catastrophe models may not take in a new elevation model "for upwards of five years," so a restored marsh can sit outside the price long after it is built. [Why better cat models aren't fixing your loss ratios](/guide/why-better-cat-models-arent-fixing-your-loss-ratios?from=guide) makes the wider case.

## the evidence that landscape loss control works

The case rests on a handful of studies, some on real fires and claims, some on models. Read the method before the number.

| intervention | finding | method | caveat |
|---|---|---|---|
| Forest fuel treatment, about 300 wildfires in 11 states | About $2.8 billion of damage and more than 4,000 buildings avoided, as reported by UC Davis | Real fires, with avoided damage estimated by the study, as reported by UC Davis | Press-reported; read the peer-reviewed paper before relying on the figure |
| Coastal wetlands in Hurricane Sandy | About $625 million of direct flood damage avoided across the Northeast; annual flood loss 16% lower on average in Ocean County, New Jersey | Industry catastrophe models (Narayan et al., 2017) | Modeled |
| Coastal habitat, Florida flood claims 2009–2022 | Best-protected areas had about half the claim frequency | NFIP claims (Swiss Re Institute, 2025) | Frequent, less severe storms; frequency, not severity |
| Marsh mounds at Graveline Bay, 30–40 homes | Modeled average annual loss 14%, 9% and 18% lower by zone | Reinsurer's flood model with protection modifiers | Not a premium; carriers disagreed and no price was quoted; in the briefing's Zone 3 2-year storm, wave height rose (0.03 to 0.10 ft) |
| Ecological forestry, northern Sierra Nevada | Modeled average annual loss 40–60% lower | Catastrophe model (TNC and WTW, 2021) | Modeled |

Two cautions. Modeled is not observed: the Sandy, Graveline and Sierra figures are model outputs, and the Swiss Re finding covers smaller storms. And proximity is not protection: a marsh nearby does not prove that one home's loss falls. What the set shows is direction. For fire and coastal flood, the condition of the landscape moves the loss a carrier pays, and the industry's own models can see it.

## how carriers fund it today

A few routes already move insurance money toward landscapes or their repair. Only the bond row funds work on the ground; the others pay after a storm, describe an intent or only keep the retained loss. None was built as loss control for a book of policies.

| route | example | what it pays for | what it leaves open |
|---|---|---|---|
| Lender to a resilience bond | CSAA Insurance Group was one of four lenders in the $4 million Yuba Forest Resilience Bond pilot (about 15,000 acres), which was repaid | Upfront capital for thinning and prescribed fire on national forest | Repayment comes from beneficiaries such as the water agency and the state, not from insurers; no avoided-loss figure is published |
| Reinsurer structures | Munich Re has described "resilience risk transfer," pairing reef restoration with risk transfer, as reported, and named missing vulnerability studies as the obstacle | Design and modeling | A statement, not a filed rate |
| Parametric cover of the habitat | The Quintana Roo reef policy paid about US$850,000 after Hurricane Delta (2020); the Mesoamerican Reef programme paid US$175,000 after Hurricane Lisa (2022) | Repair of the reef after a storm | Insures the habitat's repair, not the homes behind it |
| A captive that keeps the loss | PG&E self-insures wildfire liability through a captive covering roughly the first $1 billion a year | The utility's own retained loss | Any saving from mitigation stays inside one balance sheet |

The captive row is closest to the carrier's math, because the party that would fund prevention keeps the loss it prevents. The 10-K shows the retained loss, not nature funding. [Put nature in the captive, not just the claims file](/guide/put-nature-in-the-captive-not-just-the-claims-file?from=guide) covers that route for corporate risk managers, and [the payout that misses the place](/guide/the-payout-that-misses-the-place?from=guide) covers the parametric one. In the bond row, an insurer was repaid as a lender by the bond's beneficiaries (the water agency, the Forest Service and the state); no avoided-loss figure ties the loan to its book. [The insurer investment that actually reduces losses](/guide/insurer-investment-that-reduces-losses?from=guide) argues for more of it.

## the free-rider problem inside the industry

When one carrier pays to thin the forest above a town, the fire that burns less hot spares policies across that town, whoever wrote them, and the homeowner can switch carriers at renewal. A sprinkler belongs to one policyholder; a treated ridge belongs to everyone under it. Loss control at the source pays a carrier only when the others who benefit fund it too. [The free rider is standing on a keystone parcel](/guide/the-free-rider-is-standing-on-a-keystone-parcel?from=guide) works the problem through.

## loss control at the source, funded once

That is the turn ensurance proposes. It treats the forest, the floodplain and the marsh as the landscape's loss control and is built to fund that work once, for the place, so that carriers, counties and companies with exposure under it could each pay a share instead of waiting for one to pay it all. No carrier funds a certificate today. The instrument is a [certificate on the place](/specific?from=guide). Where several payors would share one hazard, a syndicate such as [wildfire resilience](/wildfire-resilience.syndicate?from=guide) is the pool they would join; it coordinates wildfire mitigation and forest health instruments and is not yet funded by carriers. Insurance keeps a loss run, the record of what was paid after. Ensurance is built to keep a loss map, the same chain read forward: the peril, the hazard in the landscape, the loss it would cause and who would pay the claim, so the fix could be funded before it.

Ensurance does not replace a policy ([what ensurance cannot do](/guide/what-ensurance-cannot-do?from=guide)). No loss ratio has been lowered by ensurance yet, and no premium either. Today it gives a carrier a way to see the zone's exposure and a place to start a conversation about shared funding; no carrier has funded a certificate yet, and the stewardship ratio below is a number we propose it could report.

### the number to report: a stewardship ratio

A **stewardship ratio** is intervention dollars divided by premiums: the share of each premium dollar written in a zone that goes to the loss control shrinking the hazard there. A carrier keeps its loss ratio down; the stewardship ratio shows the work done before the loss. As an illustration, a carrier writing $20 million of homeowners premium under one forest that puts $200,000 a year into treatment there would report a stewardship ratio of 1%. It is a measure we propose, not an industry standard, and it sits beside the loss ratio rather than replacing it.

The ratio works the same way for a company that keeps its own risk in a captive, and for a county or water agency that already pays as a beneficiary, the role Yuba Water played in the bond. If you want to see the zone your book sits under, [talk to someone who can map it](/contact?from=guide&topic=lower-your-insurance-bill); what ensurance does for insurers is on [the insurers page](/solutions/insurers?from=guide&topic=lower-your-insurance-bill).

## frequently asked questions

### what is loss control in insurance?

Loss control is the work an insurer does with its policyholders to prevent losses or make them smaller: inspections, hazard surveys, engineering recommendations and follow-up. It lowers the expected loss the premium has to cover. Most of it happens at the structure, while for fire and flood much of the hazard sits in the surrounding landscape.

### does landscape loss control lower my premium?

Not on its own, and not as a rule yet. A carrier recognizes mitigation when it is measured, rated at the scale where it acts and lasts for the term. One landscape case has reached a price: the 2025 Tahoe Donner wildfire placement came in 39% lower on premium and 89% lower on deductible against a stated counterfactual without the forest work, as the sponsors report. [Does mitigation lower insurance premiums](/guide/does-mitigation-lower-insurance-premiums?from=guide) covers the discounts actually filed, and [keep the policy before you cut the price](/guide/keep-the-policy-before-you-cut-the-price?from=guide) covers why staying insurable usually comes first.

### is ensurance a form of insurance?

No. Ensurance pays no claims and is not a policy. It funds the loss control a policy cannot buy: the condition of the forest, floodplain or marsh that every policy in the zone depends on.

This is not insurance, legal or tax advice.

## sources

[FM newsroom, US$600 million membership credit for 2022 (2021 release)](https://www.fm.com/news) — Membership credit; more than 50,000 recommendations completed; about $700 billion of exposure mitigated

[UC Davis, forest fuel treatments reduce wildfire spread](https://www.ucdavis.edu/climate/news/forest-fuel-treatments-reduce-wildfire-spread-prevent-28-billion-damage) — About $2.8 billion of damage and more than 4,000 buildings avoided across about 300 fires, as reported; the *Science* paper's date and authors not confirmed

[Narayan et al., *Scientific Reports* 7:9463 (2017)](https://doi.org/10.1038/s41598-017-09269-z) — Wetlands in Hurricane Sandy: about $625 million avoided; 16% lower annual flood loss in Ocean County; built on industry catastrophe models

[Swiss Re Institute, natural habitats can reduce flood losses (2025)](https://www.swissre.com/institute/research/topics-and-risk-dialogues/climate-and-natural-catastrophe-risk/coastal-and-flood-protection-natural-habitats.html) — Florida NFIP claims, best-protected areas about half the claim frequency in frequent storms

[The Water Institute, Graveline Bay insurance pilot](https://thewaterinstitute.org/graveline-bay-insurance-pilot) and [project findings briefing (June 2026)](https://water-institute.files.svdcdn.com/production/Projects/Project-Findings-Graveline-Bay-Insurance-Pilot.pdf?dm=1783346302) — Average annual loss 14%, 9% and 18% lower by zone, modeled by Munich Re America; no premium quoted; model update lag

[TNC and WTW, *Wildfire Resilience Insurance* (2021)](https://wtwco.com/en-US/Insights/2021/07/wildfire-resilience-insurance-quantifying-the-risk-reduction-of-ecological-forestry-with-insurance) — Modeled average annual loss 40–60% lower with ecological forestry

[Blue Forest, Yuba I Forest Resilience Bond](https://www.blueforest.org/our-impact/our-projects/yuba-i-frb/) and [WRI release on the Yuba II bond](https://www.wri.org/news/release-new-forest-resilience-bond-will-finance-25-million-restoration-reduce-wildfire-risk) — Pilot $4 million, about 15,000 acres, repaid; CSAA among lenders; repayment from beneficiaries

[PreventionWeb, Munich Re resilience risk transfer](https://www.preventionweb.net/news/munich-re-continues-its-flood-mitigation-work-resilience-risk-transfer-solutions) — Munich Re's statements as reported

[Swiss Re, Quintana Roo reef windstorm cover](https://www.swissre.com/our-business/public-sector-solutions/case-studies/mexico-windstorm-cover.html) — About US$850,000 paid after Hurricane Delta, 2020

[WTW, first Mesoamerican Reef insurance payout (2022)](https://www.wtwco.com/en-gh/news/2022/11/hurricane-lisa-triggers-first-pay-out-of-mesoamerican-reef-insurance-programme-to-finance) — US$175,000 after Hurricane Lisa, Turneffe Atoll, Belize

[TNC, Tahoe Donner wildfire resilience insurance (April 2025)](https://www.nature.org/en-us/newsroom/ca-wildfire-resilience-insurance0/) — Premium 39% lower and deductible 89% lower than a counterfactual without forest work; sponsors' figures

[PG&E Form 10-K, fiscal 2023](https://www.sec.gov/Archives/edgar/data/1004980/000100498024000014/pcg-20231231.htm) — Wildfire self-insurance through a captive covering about the first $1 billion a year

## the series

**lower your insurance bill**

1. [how to lower insurance premiums when the risk is outside your fence](/guide/how-to-lower-insurance-premiums?from=guide) — the hub
2. [how insurance premiums are calculated, and the slice you can move](/guide/how-insurance-premiums-are-calculated?from=guide)
3. [does mitigation lower insurance premiums](/guide/does-mitigation-lower-insurance-premiums?from=guide)
4. [keep the policy before you cut the price](/guide/keep-the-policy-before-you-cut-the-price?from=guide)
5. the carrier's cheapest claim — this post
6. [share the premium saving with the land](/guide/share-the-premium-saving-with-the-land?from=guide)

Sister series: [how to save money with ensurance](/guide/how-to-save-money-with-ensurance?from=guide). And the other side of the ledger: [how to make money with ensurance](/guide/how-to-make-money-with-ensurance?from=guide).