
Outlook
Flood Re and commercial insurance in England's flood zones
Commercial insurance and Flood Re: what the scheme covers for homes and small firms, its exclusions for larger property, and how flood maps shape cover in England.
What to take away
- Commercial insurance in England rarely includes Flood Re: the scheme reinsures homes and some small businesses, not larger commercial property.
- Flood Re covers eligible household policies and a narrow set of small business risks, with exclusions for larger commercial property.
- Environment Agency flood maps show flood zone status, which insurers use to price and restrict commercial cover.
- Flood warnings and business interruption cover work together, but BI policies usually require a property damage trigger.
- Flood zone 3 addresses usually face higher premiums, higher excesses or exclusions unless a survey supports the risk.
- The ONS housing data on property and housing can help you judge exposure and values in your area.
What Flood Re is and how it reinsures UK flood risk
Flood Re is a reinsurance scheme that lets insurers pass the flood risk on eligible household policies to a central pool. It was set up to keep flood cover available and affordable for homes in England. Insurers still sell the policy and handle claims, but the flood element is reinsured.
How Flood Re Reinsurance Works
- Policyholder pays insurer total premium
- Insurer passes flood risk to Flood Re
- Flood Re charges premium by council tax band
- Flood Re backed by government and industry
- Insurer handles claims and pays valid claims
The scheme charges insurers a premium based on council tax bands. That keeps the flood part of a domestic policy predictable. The insurer then decides the total price you pay. Flood Re does not sell policies direct to the public.
For commercial insurance, the scheme matters less than many owners assume. A shop or office run from a home may fall under a household policy. A separate commercial policy will not. That distinction drives most disputes about cover after a flood.
Flood Re is backed by government and the insurance industry. It is not a compensation fund and it does not pay claims to policyholders. It reinsures insurers, which then pay valid claims under the policy terms.
The scheme also supports flood warnings work and better flood risk data. That data feeds into how insurers view England flood zones. You can read official Environment Agency material through Environment Agency - GOV.UK for mapping and warning context.
Which homes and small businesses Flood Re covers, and the exclusions
Flood Re covers household policies for homes in the UK. That includes buildings, contents and combined cover where the insurer chooses to use the scheme. Small business eligibility is narrow and tied to the property, not the trade alone.
Flood Re Eligibility by Property Use
Likely eligible
- Main use
- Home
- Business activity
- Minor
- Examples
- Spare-room office
- Policy type
- Household
- Mixed-use
- Small commercial element
Usually excluded
- Main use
- Commercial
- Business activity
- Significant
- Examples
- Shop, warehouse, factory
- Policy type
- Commercial
- Mixed-use
- Large commercial element
A property may qualify if it is used mainly as a home and the business activity is minor. A bed and breakfast with a small number of guests, or an office in a spare room, can sometimes sit under a household policy. The insurer decides whether to place the flood risk into Flood Re.
Exclusions for larger commercial property are firm. Shops, warehouses, factories, hotels and most premises rated for business use are outside the scheme. So are mixed-use buildings where the commercial element is significant. Landlord blocks and some leasehold arrangements also fall outside.
Small business eligibility depends on the policy type, not just the size of the firm. A one-person consultancy in a dedicated office unit will usually need commercial insurance. A similar consultancy run from the kitchen table may stay on a home policy. The building's rating and use decide.
If you are unsure, ask the insurer in writing before renewal. Get the answer on file. When you compare business insurance policies for a commercial premises, check whether flood is included, excluded or offered with a separate excess.
Why larger commercial property falls outside Flood Re
Flood Re was designed around domestic property. Extending it to commercial premises would spread the cost across household policyholders. That is why exclusions for larger commercial property are built into the scheme rules.
If Commercial Flood Cover Is Declined
- Ask why the premises were declined
- Check flood zone, construction and claims history
- Review trade and business interruption exposure
- Ask a broker to approach specialist markets
- Arrange a flood survey to support terms
- Document each step taken
The commercial market prices flood risk itself. Insurers use their own models, survey data and claims history. They may apply a flood excess, an inner limit or an exclusion. Some risks are placed with specialist markets, including Lloyd's of London syndicates.
For a business, the flood cover question is often about continuity, not just repairs. A three-month closure can cost more than the building damage. That is why business interruption cover and flood risk are assessed together by underwriters.
Brokers matter here. A broker can approach several insurers and specialist schemes. The British Insurance Brokers' Association and the Association of British Insurers publish guidance on flood cover and signposting. A broker can also arrange a flood survey to support better terms.
If your premises are declined, ask why. The reason may be the flood zone, the construction, the claims history or the trade. Each can be addressed separately. Documenting the steps you take is part of good risk scenarios planning.
Reading Environment Agency flood maps for commercial premises
Environment Agency flood maps show the chance of flooding from rivers and the sea. They use flood zones: zone 1 is low probability, zone 2 is medium, zone 3 is high. Surface water maps are separate and use different risk bands.
Environment Agency Flood Zones
Flood zone
- Zone 1
- Low probability
- Zone 2
- Medium probability
- Zone 3
- High probability
- Surface water
- Separate bands
Risk level
- Zone 1
- Zone 2
- Zone 3
- Surface water
The maps are a screening tool, not a survey. They show the area, not your building. A site in zone 3 may still be insurable if defences, floor levels and drainage are good. A site in zone 1 can flood from surface water or sewers.
Use the maps before you buy, lease or renew. Check the postcode, then look at the detailed map and the flood risk assessment for the area. The Check for flooding - GOV.UK service gives a quick view for a property in England.
Make a short record of what you find. Note the flood zone, the source of flooding and any defences. Insurers respond better to a clear summary than to a vague assurance. Photographs of air bricks, thresholds and drainage help too.
Flood risk is not static. New defences, development and climate change all shift the maps over time. Recheck at each renewal and after any local flood scheme completes. General guidance sits on Flooding - GOV.UK.
Flood warnings, business interruption and property damage cover
Flood warnings give you time to move stock, servers and vehicles. Sign up to the Environment Agency warning service for your postcode. Warnings are free and can be sent by phone, text or email.
Flood Claim Payout Path
- Flood warning received
- Flood plan activated
- Property damage occurs
- Property damage cover pays repairs and stock
- Business interruption pays lost profit
- Denial of access may cover road closure
A warning is not a claim. It is a trigger for your flood plan. Write down who does what, where stock goes and how you contact staff and customers. Test the plan once a year.
Business interruption cover pays for lost profit and extra costs after an insured event. Most policies require property damage at the premises first. Without damage, a warning alone rarely triggers a payout. Check the wording.
Property damage cover pays to repair or rebuild. It may include stock, contents, fixtures and alternative premises costs. Flood excesses are often higher than the standard excess. Some policies cap the flood sum insured.
A worked example. A bakery in a zone 3 town floods to 300mm. Damage cover pays for floors, ovens and stock. Business interruption pays for lost trade while it is closed, up to the indemnity period. A denial of access extension may cover the days when the road is shut but the shop is dry.
Use a planning template to map exposures, continuity and policy checks in one place. Keep a copy off site and a digital copy you can reach from a phone.
How flood zone status affects commercial insurance terms in England
Flood zone status is one rating factor among several. Insurers also look at construction, age, occupancy, trade and claims history. A zone 3 address is not automatically uninsurable, but it changes the conversation.
Expect higher premiums, higher excesses or both in higher zones. Some insurers apply a flood sub-limit, meaning only part of the sum insured is covered for flood. Others exclude flood entirely and expect you to buy separate cover.
Terms vary by region and by insurer appetite. Coastal and river areas in the South West, Yorkshire and the Humber, and parts of the South East often see tighter terms. Urban sites in Greater London may face surface water and sewer flooding instead.
Typical Commercial Flood Terms by Zone
Flood zone
- Zone 1
- Low river or sea risk
- Zone 2
- Medium risk
- Zone 3a
- High risk
- Zone 3b
- Functional floodplain
- Surface water hotspot
- Any zone
Typical insurer view
- Zone 1
- Standard cover and excess
- Zone 2
- Higher excess, possible sub-limit
- Zone 3a
- Higher premium, survey often needed
- Zone 3b
- Restricted or excluded, specialist market
- Surface water hotspot
- Drainage questions, higher excess
Common terms
- Zone 1
- Zone 2
- Zone 3a
- Zone 3b
- Surface water hotspot
Flood zone status affects terms
Typical insurer view
- Zone 1
- Low river or sea risk
- Zone 2
- Medium risk
- Zone 3a
- High risk
- Zone 3b
- Functional floodplain
- Surface water hotspot
- Any zone
Common terms
- Zone 1
- Standard flood cover, standard excess
- Zone 2
- Higher flood excess, possible sub-limit
- Zone 3a
- Higher premium, flood excess, survey often needed
- Zone 3b
- Cover restricted or excluded, specialist market
- Surface water hotspot
- Drainage questions, higher excess possible
Steps to improve your position:
- Check the flood zone and surface water risk for the exact postcode.
- Commission a flood risk assessment or survey if the site is in zone 2 or 3.
- Record defences, floor levels, drainage and any flood resistance measures.
- Ask a broker to approach insurers with the survey and a flood plan.
- Review the flood excess, sub-limits and any exclusion at every renewal.
A checklist before you sign or renew:
- Flood zone and surface water risk confirmed for the premises.
- Flood excess, sub-limits and exclusions read and understood.
- Business interruption indemnity period matches your recovery time.
- Flood warnings registered for the postcode.
- Flood plan written, shared and tested.
- Survey or flood risk assessment on file for the insurer.
- Alternative premises and stock relocation options identified.
Insurance is one part of the picture. Property values and stock levels feed into the sums insured, and the Housing - Office for National Statistics data on property and housing can help you sense-check values in your area. Rebuild costs, not market values, set the buildings sum insured.
Regulation shapes how policies are sold and how complaints are handled. The Financial Conduct Authority and the Prudential Regulation Authority supervise firms. The Financial Ombudsman Service can review a complaint if a claim is declined. Premiums carry Insurance Premium Tax, collected through HM Revenue & Customs.
Review your cover when the business changes. A new lease, a new trade or a new storage arrangement can alter the risk. Keeping the insurer informed avoids disputes later. For wider market context, including legal triggers that affect cover and disclosure, check the annual guide.



