Selling a House with Flood Risk in South Yorkshire

Yorkshire and Humber is one of the most flood-affected regions in England. With approximately 64,600 properties at high risk of river or sea flooding — 17.6% of the national total — the region's sellers face questions about flood risk more often than almost anywhere else in the country.

If you are selling a property in Sheffield, Doncaster, Rotherham, York, Hull, or the Calder Valley, this guide explains how flood risk affects your sale, what you must disclose, and the practical steps you can take to reassure buyers and their lenders. For general guidance on selling in flood zones, see our companion guide on selling a house on a flood plain.

The scale of flood risk in Yorkshire

Yorkshire's flood risk comes from a combination of large river catchments, coastal exposure, and urban surface water drainage pressures. The Environment Agency's data paints a clear picture of the scale:

• 64,600 properties in Yorkshire and Humber are at high risk of river or sea flooding, the second-highest regional total in England
• Surface water flooding has increased by 43% nationally since 2018, and urban areas such as Sheffield, Hull, and Leeds are particularly affected
• The region has experienced repeated major flood events in recent years, including the 2007 summer floods, the 2015 Boxing Day floods (Storm Eva), the November 2019 River Don floods, and Storm Babet in October 2023
• The Environment Agency has invested heavily in flood defences across the region, but many properties remain in high-risk flood zones

Understanding the specific flood risks in your area is the first step towards a successful sale. The Environment Agency's flood map for planning at gov.uk/check-flood-risk will show your property's flood zone classification.

Which areas are most affected

Flood risk in Yorkshire is concentrated in several well-known areas. If you are selling in any of the following locations, you should expect buyers and their solicitors to raise flood-related questions.

Sheffield

Sheffield is unusual among English cities in having five rivers running through its urban area: the Don, Porter, Loxley, Rivelin, and Sheaf. The 2007 floods caused significant damage across the city, particularly along the Don Valley. Properties in Hillsborough, Kelham Island, Attercliffe, and the Lower Don Valley are among the most exposed. The Environment Agency's Sheffield Upper Don flood defence scheme has improved protection for parts of the city, and this is a positive point to highlight to buyers. If you are looking for local support, our Sheffield estate agents page can help you find agents who understand flood-risk sales in the area.

Doncaster

Doncaster was severely affected by the November 2019 floods, when the River Don burst its banks and flooded more than 500 homes in areas including Fishlake, Bentley, and Kirk Sandall. The event attracted significant media coverage and remains in the memory of many buyers searching in the area. Since 2019, the Environment Agency has progressed flood alleviation works along the Don catchment. Sellers in Doncaster should be prepared with details of any defences protecting their specific area and should complete the TA6 disclosure thoroughly.

Rotherham

Rotherham faces flood risk primarily from the River Don and the River Rother. Storm Babet in October 2023 caused significant flooding in Catcliffe, where the River Rother overtopped its banks and inundated homes. Earlier flood events in 2007 and 2019 also affected parts of the borough. Sellers of properties flooded during any of these events must disclose the details on the TA6 form. For more on what to declare, see our guide on selling a house with flooding history.

York

York has a long history of flooding from the River Ouse and the River Foss. The city centre and areas along the Ouse, including Bishopthorpe Road, Clementhorpe, and Huntington Road, are periodically affected. The Boxing Day 2015 floods (Storm Eva) were particularly severe, with the Foss Barrier being overwhelmed. Since then, the Environment Agency has upgraded the Foss Barrier and invested in improved defences along both rivers. York's flood history is well known, and many buyers accept the risk provided they can see that defences are in place and insurance is available.

Hull

Hull is one of the most flood-exposed cities in England. Approximately 90% of the city lies within Flood Zone 3, largely because it sits on low-lying land at the confluence of the River Hull and the Humber Estuary and relies heavily on pumped drainage. The 2007 summer floods affected over 9,000 homes in the city. Since then, major investment in the Humber Hull Frontages scheme and other defences has improved protection. Selling in Hull requires a clear explanation of the flood zone context — buyers and lenders familiar with the city understand that the Flood Zone 3 classification reflects the topography rather than necessarily indicating an imminent threat, particularly where defences are in good condition.

Calder Valley (Calderdale)

The Calder Valley, including Hebden Bridge, Todmorden, Mytholmroyd, and Sowerby Bridge, is one of the most repeatedly flooded areas in England. The narrow, steep-sided valley means rainwater runs off quickly into the River Calder. Major flooding occurred in 2012, 2015 (Storm Eva), and 2020. The Environment Agency completed the Mytholmroyd flood alleviation scheme in 2023 and has invested in other defences along the valley. If you are selling in the Calder Valley, referencing these defence schemes and any property-level resilience measures is essential.

How flood risk affects your sale

Flood risk introduces additional considerations at every stage of the sale process. Understanding these will help you prepare effectively.

Buyer perception and pricing

Many buyers will check the Environment Agency's flood map before they even view your property. Those who proceed to an offer will typically factor the flood zone into their pricing. Research by the Environment Agency suggests properties in high-risk flood areas can see reductions of 5% to 15% compared with similar properties outside flood zones, though this varies significantly by area. Properties protected by major defence schemes, or with documented resilience measures, tend to see a smaller discount.

Solicitor enquiries

When the buyer's environmental search flags a flood risk, their solicitor will raise additional enquiries. In South Yorkshire, where recent flood events are well documented, expect questions about the 2019 River Don floods, Storm Babet in 2023, and any earlier events. Having your answers and supporting documents ready in advance will prevent these enquiries from causing weeks of delay. For more on how the search process works, see our guide on flood risk searches and what they mean.

Mortgage lender requirements

Most mainstream lenders will lend on properties in Flood Zones 1 and 2 without specific flood-related conditions. For Flood Zone 3 properties, lenders may require:

• A professional flood risk assessment at the buyer's expense
• Confirmation that buildings insurance with flood cover is available at a reasonable premium
• Details of any Environment Agency flood defences protecting the property
• Lower loan-to-value ratios in some cases, meaning the buyer needs a larger deposit

The good news for sellers in South Yorkshire is that the Environment Agency's significant investment in flood defences across the region has improved lender confidence. Providing your buyer's solicitor with your insurance schedule and details of local defences is one of the most effective ways to keep the mortgage process on track.

What to disclose on the TA6

The TA6 Property Information Form is a standard part of every residential property sale in England and Wales. Section 7 covers environmental matters, including flooding. As the seller, you must answer these questions honestly and completely.

For properties in South Yorkshire, the key disclosure points include:

• Any flooding that has affected the property from any source — whether that was the 2019 River Don floods, Storm Babet in 2023, surface water flooding, or any earlier event. Include dates, the source, the approximate depth, and what remedial work was carried out.
• Whether you are aware the property is in a flood risk area, for example because you receive Environment Agency flood warnings or have seen the flood zone maps.
• Any flood prevention or resilience measures in place, whether installed by you, a previous owner, or the Environment Agency.
• Any flood warnings you have received and whether you are registered with the Environment Agency's flood warning service.
• Any insurance claims for flood damage, including the insurer, the date, and the amount if known.

Honesty is essential. The buyer will discover the flood zone classification through their environmental search regardless, and recent flood events in South Yorkshire are a matter of public record. Being forthcoming about the risk while presenting the steps you have taken to manage it is by far the better approach.

Flood searches and reports

The buyer's solicitor will order an environmental search that provides detailed flood risk information. Understanding what this reveals will help you anticipate the questions you will be asked.

A standard environmental search report typically includes:

• The Environment Agency flood zone classification for your property
• Surface water flood risk mapping from the Environment Agency and the local lead flood authority
• Historical flood records from the Environment Agency's recorded flood outlines dataset, which will show whether your property was within the extent of known flood events
• Proximity to flood defences and their condition rating
• Groundwater flooding susceptibility data from the British Geological Survey

If the standard environmental search flags a significant risk, the solicitor may recommend a more detailed JBA flood risk report. This provides a granular, site-specific analysis of all flood sources and is increasingly common for properties in South Yorkshire given the region's flood history. For more on how to interpret the results, see our guide on environmental search results explained.

Insurance complications and the Flood Re scheme

Insurance availability is often the biggest concern for buyers of flood-risk properties. Without affordable buildings insurance that includes flood cover, mortgage lenders will not approve the loan and the sale cannot proceed.

How Flood Re helps sellers in South Yorkshire

Flood Re is a reinsurance scheme launched in April 2016 as a joint initiative between the UK government and the insurance industry. It allows participating insurers to pass the flood risk element of a home insurance policy to the Flood Re fund at a fixed premium capped by council tax band. Key points:

• It covers residential properties built before 1 January 2009, which includes the vast majority of housing stock in South Yorkshire
• It is available through most major insurers, including those on comparison websites
• The scheme is funded until 2039, providing long-term certainty for buyers
• It does not cover buy-to-let landlord policies (since April 2024), commercial properties, or leasehold buildings policies taken out by a freeholder or management company

As a seller, the practical benefit is that you can reassure your buyer that affordable flood insurance will be available after completion. Providing your current insurance documents — including the premium, the level of flood cover, and the excess — is strong evidence that the property is insurable.

When Flood Re does not apply

If your property was built after 2009 or falls outside Flood Re for another reason, you will need to demonstrate that flood insurance is still available on the open market. Specialist flood insurance brokers accredited by the British Insurance Brokers' Association (BIBA) can often find cover where mainstream insurers will not quote. Having a policy in place before you market the property is advisable.

What buyers will ask

Buyers considering a property in a flood-risk area of South Yorkshire will typically ask the following questions. Having your answers prepared in advance will speed up the sale:

1. Has the property ever been flooded? Be ready with a clear, factual account of any events, including dates, source, depth, and remedial work.
2. What flood zone is the property in? Know your classification and be able to explain what it means in context, particularly if your property is protected by defences.
3. Can I get affordable insurance? Provide your current insurance schedule showing flood cover, the premium, and the excess. Mention Flood Re if applicable.
4. What flood defences are in place? Reference any Environment Agency schemes, such as the Sheffield Upper Don defences, Doncaster flood alleviation works, or the upgraded Foss Barrier in York.
5. What resilience measures does the property have? List any flood doors, non-return valves, raised sockets, sump pumps, or waterproof finishes, with supporting certificates or photographs.
6. Will my mortgage lender approve the property? Explain that most lenders will lend on properties in Flood Zones 1 to 3a provided insurance is in place, and that the buyer should check with their lender early in the process.

Practical steps for sellers in flood-risk areas

The most successful sales of flood-risk properties in South Yorkshire are those where the seller takes a proactive approach. Here are the steps that make the biggest difference:

1. Check your flood zone classification. Use the Environment Agency's flood map at gov.uk/check-flood-risk before you list. Understand which zone your property falls in and what that means for buyers and lenders.
2. Compile your flood history honestly. If your property was flooded in 2019, 2023, or any other event, prepare a clear, factual account with dates, sources, depth, damage, and remedial work. Attach invoices, insurance claim records, and photographs.
3. Gather your insurance documents. Provide a copy of your current buildings insurance policy schedule showing flood cover, the premium, and the excess. This single document answers many of the questions buyers and lenders will ask.
4. Document flood resilience measures. If you have installed flood doors, non-return valves, raised sockets, or other property flood resilience (PFR) measures, list them and provide any certificates, survey reports, or photographs.
5. Reference local flood defences. If your property is protected by an Environment Agency flood defence scheme, provide details of the scheme, its standard of protection, and when it was completed or upgraded.
6. Complete the TA6 Section 7 thoroughly. Do not leave the environmental questions blank or answer “not known” where you do in fact know the answer. Comprehensive, honest answers build trust and reduce follow-up enquiries.
7. Register for flood warnings. If you are not already registered with the Environment Agency's free flood warning service, do so. This shows buyers you take flood risk management seriously.
8. Brief your estate agent. Ensure your agent understands the flood risk, the defences in place, and the insurance position so they can address buyer questions confidently during viewings.
9. Consider a pre-sale flood risk assessment. For properties in Flood Zone 3, a site-specific flood risk assessment from a qualified consultant can demonstrate that the actual risk is lower than the zone map suggests, particularly where defences or local topography provide additional protection.
10. Time your sale carefully. Spring and summer viewings tend to generate more interest for flood-risk properties. Listing shortly after a major flood event in your area can make selling more difficult, even if your property was not directly affected.

South Yorkshire flood defence investment

The Environment Agency has made significant investments in flood defences across South Yorkshire and the wider Yorkshire region. As a seller, these are positive points to highlight:

If your property benefits from any of these schemes, include details in your sale pack and mention them in your TA6 responses. A property protected by a recently completed or upgraded defence scheme is significantly more attractive to both buyers and mortgage lenders than one with no defences.

Sources

• Environment Agency — Flood map for planning, gov.uk/check-flood-risk
• Environment Agency — National Flood and Coastal Erosion Risk Management Strategy for England (2020)
• Environment Agency — Yorkshire flood risk management data and flood defence investment programme
• Environment Agency — Recorded flood outlines dataset
• Flood Re — floodre.co.uk, scheme eligibility and transition plan
• GOV.UK — November 2019 floods: response and recovery
• GOV.UK — Storm Babet: government response (October 2023)
• Association of British Insurers (ABI) — Flood insurance guidance
• British Insurance Brokers' Association (BIBA) — biba.org.uk
• Law Society — TA6 Property Information Form (4th edition, 2020)
• Committee on Climate Change — UK Climate Change Risk Assessment (surface water flood risk data)

Frequently asked questions