---
title: risk has an address
canonical_url: https://ensurance.app/guide/risk-has-an-address
markdown_url: https://ensurance.app/guide/risk-has-an-address.md
subtitle: "spatial risk is set by where a thing sits and what surrounds it. finance can price, pool, transfer, spread or leave it, and none of those changes the place"
category: nature-finance
---

# risk has an address

*spatial risk is set by where a thing sits and what surrounds it. finance can price, pool, transfer, spread or leave it, and none of those changes the place*

**What is spatial risk?** Spatial risk is risk set by where something is and what is around it. Two identical homes on identical policies carry different risk if one sits below a burned slope. Two loans with the same credit score carry different risk if one borrower farms on a falling aquifer. For flood, fire, drought and heat, location is not a detail on the file. It is a large part of the risk.

Spatial risk has three layers. The **pin** is where the exposure sits. The **footprint** is the area one event touches, which is why neighbours lose together. The **source** is the ground that sets how big the hazard gets inside that footprint, and it is often off the parcel and owned by someone else.

The floodplain, the forest, the marsh and the aquifer are what set how big a flood, a fire or a drought gets at an address, and they exist whether or not anyone insures, lends against or funds them. [**Ensurance**](/manual/ensurance?from=guide) is how money reaches that ground. It is not the ground, and it is not insurance.

:::johnson
**risk has an address. so does the fix.**

Finance can price, pool, transfer, spread or leave a risk. Each of those moves it across the map, and none of them changes the place. The ground that sets the hazard is the one input most of the footprint is not paying to keep.

[read next: a footprint turns a thousand policies into one event →](/guide/a-footprint-turns-a-thousand-policies-into-one-event?from=guide)
:::

## the pin, the footprint and the source

| layer | what it is | an insurer reads it as | a lender reads it as | a town reads it as |
|---|---|---|---|---|
| **Pin** | Where the house, plant, farm or road sits | The location on the policy, scored for flood, fire, wind and heat | Where the collateral is | Which parcels and roads are on the tax roll |
| **Footprint** | The area one flood, fire, drought or heat wave reaches | An accumulation: many policies inside one event | A concentration: many loans and the borrowers' income inside one event | One disaster that hits homes, businesses and the town's own budget at once |
| **Source** | The ground that sets the hazard's size: the slope, the floodplain, the marsh, the aquifer | An input to the hazard it cannot underwrite or own | An input to the collateral nobody in the credit file holds | Land often outside the town's control, upstream or uphill |

The pin is the layer finance knows best, and the data market has grown up around it; [what asset location data actually is](/guide/what-asset-location-data-actually-is?from=guide) covers that file. The footprint is where neighbours stop being independent. In January 2025 the Palisades and Eaton fires in Los Angeles created combined insured losses of about $40 billion, according to the Swiss Re Institute (2026). For the carriers that wrote those neighbourhoods, policies that had been priced one at a time arrived as one event.

The source is the layer almost nobody holds. Where the hazard is set on the ground, the ground can change its size. Salt marshes in Ocean County, New Jersey lowered modeled annual flood losses for the properties behind them by 16% on average, and up to 70% in some locations (Narayan and colleagues, 2017, from high-resolution flood and loss models). In that model the marsh cut losses for every property behind it at once, and none of those properties' policies or loans counts what it takes to keep it.

Spatial risk asks where a loss lands. Its companion question is what arrives: one place carries several perils at once, and a policy splits them into separate lines that the ground does not ([what multi-peril insurance covers](/guide/what-multi-peril-insurance-covers?from=guide)). Not every hazard has a source on the ground. Hail is weather. An earthquake is set by a fault. And where a source does matter, it moves part of the loss, often the frequent and mid-size years, not the record event; [the average year is not the year that breaks you](/guide/the-average-year-is-not-the-year-that-breaks-you?from=guide) sorts which part.

## finance's tools assume space averages out

**Insurance pools.** Many policyholders rarely lose in the same year, so the total is steadier than any one loss. Inside a footprint, a thousand policies can behave like one.

**Lending spreads across borrowers.** But mortgages, farm loans and municipal bonds cluster where people live and farm, and the borrowers' collateral and income can share one river or one aquifer.

**Allocators spread across regions.** That works while the regions are independent. Drought regions, heat domes and river basins can be larger than the regions a portfolio counts as separate, and that shared exposure need not show in the price matrix ([the correlation outside the matrix](/guide/the-correlation-outside-the-matrix?from=guide)).

None of this is a flaw in the tools. Each was built for risk that is roughly independent. Spatial risk is the part that is not.

## five moves finance makes, and what each does to the place

Finance has five answers to a risk with an address. All five are real and necessary.

| move | what it does | what it does to the place |
|---|---|---|
| **Price it** | The premium, rate or spread rises with the hazard | Nothing directly. A price can prompt an owner to harden a roof; it does not pay for the slope above it |
| **Pool it** | Many exposures share losses through one insurer or plan | Nothing. The footprint still lands on the pool |
| **Transfer it** | Reinsurance, catastrophe bonds and other risk transfer move the loss to other balance sheets | Nothing. The risk is held elsewhere; the hazard is the same size ([what reinsurance cannot cede](/guide/what-reinsurance-cannot-cede?from=guide)) |
| **Spread it** | Hold exposure in many places so one footprint is a small share | Nothing. Your share of the loss falls; the loss does not |
| **Leave** | Non-renew, cap the zone, stop lending | Nothing. The risk stays and lands on whoever cannot leave |

Every move changes who holds the risk; none, by itself, changes the place. Some carriers, utilities and water districts already fund the ground directly. What is missing is a shared way for everyone in a footprint to do it together. That is not a criticism. A carrier capping a zone that has outgrown its capital is doing its job. But after all five moves, the forest above town is in the condition it was before.

*Insurance moves risk across the map. Ensurance funds the place.*

## the sixth move: fund the place that sets the footprint

Everyone in one footprint shares one source. The insurer with policies in the valley, the bank with mortgages there, the water district's bondholders, the utility, the town and the owners all depend on the same floodplain or forest, mostly without knowing the others are there. Read one way, that list is a map of correlated loss. Read the other way, it is the list of who benefits when the ground is kept.

The sixth move is to fund the ground itself: an account at the named place, funded by those who share the footprint, paid to the ground first and the people who keep it second. It replaces none of the five. It works on the input they cannot change, and where the hazard is set on the ground it can move part of the loss curve, not all of it.

## the rest of the series

[A footprint turns a thousand policies into one event](/guide/a-footprint-turns-a-thousand-policies-into-one-event?from=guide) is accumulation risk: why insurers count roofs by the footprint. [A loan book is a map](/guide/a-loan-book-is-a-map?from=guide) is concentration risk for lenders and bondholders. [Diversification lowers your share, not the loss](/guide/diversification-lowers-your-share-not-the-loss?from=guide) steelmans geographic diversification, then shows where footprints outgrow it. [When the insurer leaves, the risk stays](/guide/when-the-insurer-leaves-the-risk-stays?from=guide) follows the risk in uninsurable areas to whoever ends up holding it. [How to manage spatial risk at the source](/guide/how-to-manage-spatial-risk-at-the-source?from=guide) is the how-to: map the footprint, find the ground that sets the hazard, fund it together.

## what we do and do not do

We do not score hazards, run catastrophe models, write policies, hold risk or pay claims. Ensurance is not insurance ([what ensurance cannot do](/guide/what-ensurance-cannot-do?from=guide)). No carrier is known to credit ensurance funding in a premium today, and no zone has yet been kept insurable by it. Hazard scores and [catastrophe models](/guide/the-model-learns-from-a-past-that-is-leaving?from=guide) from specialist suppliers are inputs.

What **ensurance** does today is give a named place an [account](/agents?from=guide), issue [certificates](/specific?from=guide) and coins people can fund, and route proceeds to the ground and the people who keep it. [Risk Resilience](/risk-resilience.ensurance?from=guide) is the flow the protocol tracks for that work. Some pieces are designed, not live: [parametric ensurance](/guide/what-parametric-ensurance-actually-does?from=guide), permanent protection at scale, and borrowing against these instruments.

To see places that already have an account, [explore](/explore?from=guide). The services behind this, delivered with technical partners, are on the pages for [insurers](/solutions/insurers?from=guide&topic=spatial-risk), [capital providers](/solutions/capital-providers?from=guide&topic=spatial-risk), [investors](/solutions/investors?from=guide&topic=spatial-risk) and [governments](/solutions/governments?from=guide&topic=spatial-risk).

This is not insurance, investment or legal advice.

## frequently asked questions

### what is spatial risk?

Spatial risk is risk set by where something is and what is around it. It has three layers: the pin (where the exposure sits), the footprint (the area one event touches, which makes neighbours lose together) and the source (the ground that sets the hazard's size, often off the parcel). Accumulation in insurance and geographic concentration in lending are both forms of spatial risk.

### how is spatial risk different from geospatial risk?

Geospatial risk usually means the hazard at one site: where an asset sits and what that ground faces, as read from location data ([who sells nature and climate location data](/guide/who-sells-nature-location-data?from=guide)). Spatial risk adds what the site shares with its neighbours, the footprint, and the ground that sets the hazard for all of them, the source.

### can spatial risk be diversified away?

Partly. Holding exposure in many regions lowers your share of any one loss, and it works while the regions are independent. It stops working when footprints are larger than the regions, or when many holdings depend on one source. The regional case is in [diversification lowers your share, not the loss](/guide/diversification-lowers-your-share-not-the-loss?from=guide); the planetary case is in [you cannot diversify out of the plate](/guide/you-cannot-diversify-out-of-the-plate?from=guide).

## sources

[Swiss Re Institute, *sigma* 1/2026, as reported by Insurance Journal (23 March 2026)](https://www.insurancejournal.com/news/national/2026/03/23/863087.htm) — "The Palisades and Eaton fires in Los Angeles in January 2025 created combined insured losses of US$40 billion"

[Narayan, S. et al. (2017), "The value of coastal wetlands for flood damage reduction in the northeastern USA," *Scientific Reports* 7: 9463](https://doi.org/10.1038/s41598-017-09269-z) — Barnegat Bay, Ocean County, New Jersey: salt marshes lowered modeled annual flood losses by 16% on average, up to 70% in some locations; high-resolution flood and loss models

[The Nature Conservancy, "Coastal wetlands prevented $625M in property damage during Hurricane Sandy" (31 August 2017)](https://blog.nature.org/2017/08/31/coastal-wetlands-prevented-625m-in-property-damage-during-hurricane-sandy/) — Authors' summary of the Narayan study: annual flood losses down 16% on average, up to 70% in some locations

## the series

1. [risk has an address](/guide/risk-has-an-address?from=guide) — **Read first:** what spatial risk is, the pin, the footprint and the source, and the one move finance does not make
2. [a footprint turns a thousand policies into one event](/guide/a-footprint-turns-a-thousand-policies-into-one-event?from=guide) — Accumulation risk: why insurers count roofs by the footprint
3. [a loan book is a map](/guide/a-loan-book-is-a-map?from=guide) — Concentration risk: what lenders and bondholders share with the ground under their borrowers
4. [diversification lowers your share, not the loss](/guide/diversification-lowers-your-share-not-the-loss?from=guide) — Where geographic diversification works, and where the footprints outgrow it
5. [when the insurer leaves, the risk stays](/guide/when-the-insurer-leaves-the-risk-stays?from=guide) — Uninsurable areas, and who ends up holding the risk
6. [how to manage spatial risk at the source](/guide/how-to-manage-spatial-risk-at-the-source?from=guide) — Map the footprint, find the ground that sets the hazard, fund it together

**Companion series:** [what multi-peril insurance covers](/guide/what-multi-peril-insurance-covers?from=guide) — the several perils one place carries, and the ground as the layer under the policy.