Updated October 2026: This article was originally published in March 2014 following severe winter flooding and growing concern about how flood risk should be addressed during conveyancing. It has been updated to consider subsequent changes in mortgage lender requirements, insurance and the evidence available when an earlier transaction is investigated.
Flood risk can affect far more than the physical condition of a property. It may influence its value, the availability and cost of buildings insurance, its acceptability to mortgage lenders and the owner’s ability to sell or remortgage in the future.
For conveyancers, the issue is not simply whether a search mentions flooding. The more difficult questions are what the result means, whether further investigation is appropriate, what the client should be told and whether the mortgage lender has any relevant requirements.
Why flood risk became a major conveyancing concern
The severe flooding experienced during the winter of 2013 and 2014 pushed flood risk to the forefront of homebuyers’ concerns. Research reported at the time suggested that many purchasers regarded the possibility of flooding as being at least as important as more traditional considerations such as location and neighbourhood.
That concern appeared to contrast with reports from search providers that dedicated flood searches were only being obtained in a proportion of conveyancing transactions.
This raised an obvious question: would mortgage lenders begin introducing more detailed requirements about flood searches, insurance and properties situated in areas of increased flood risk?
Our related article, When the Flood Waters Recede, Will Conveyancing Lawyers Face a Deluge of Claims?, considered the potential exposure of conveyancers where flood risk, appropriate searches and the availability of insurance were not adequately addressed.
Flood risk is not a single issue
A property may be exposed to flooding from several different sources, including:
- rivers and the sea;
- surface water;
- groundwater;
- reservoirs; and
- ordinary watercourses and drainage systems.
These risks should not be treated as interchangeable. A search may identify one form of flood risk while reporting a much lower risk from another source. The result may also relate to the surrounding area rather than establishing that the individual building is likely to flood.
An environmental search or flood report is generally a desktop assessment. It can provide important information and may recommend further investigation, but it is not necessarily a substitute for advice from a suitably qualified surveyor, flood-risk specialist, insurer or insurance broker.
What should conveyancers consider?
The appropriate steps will depend on the transaction, the search result and the client’s circumstances. Relevant questions may include:
- What type of flooding has been identified?
- Does the result relate to the property itself or to land nearby?
- Has the property flooded previously?
- Has the seller made any previous insurance claim connected with flooding?
- Does the search provider recommend a dedicated flood report or other investigation?
- Can buildings insurance, including flood cover, be obtained on acceptable terms?
- Is the proposed flood excess unusually high?
- Are there flood defences, and what reliance can properly be placed upon them?
- Does the mortgage lender have any relevant reporting or insurance requirements?
- Could the risk affect the property’s value, future mortgageability or marketability?
A conveyancer is not expected to provide technical advice about the physical likelihood of flooding. It is nevertheless important to identify the limits of the legal advice, explain the significance of an adverse result and direct the client towards appropriate specialist investigation where necessary.
Buildings insurance does not answer every question
The availability of buildings insurance is important because a mortgage lender will ordinarily require the property to be insured. However, obtaining a policy does not establish that the physical flood risk is low or that another insurer or mortgage lender will take the same view in the future.
The premium, excess, exclusions and scope of flood cover may all matter. A purchaser should also understand that the terms available to the seller are not necessarily the terms that will be offered to the purchaser.
Flood Re was launched in 2016 to improve the availability and affordability of flood insurance for eligible residential properties. It does not cover every property and does not guarantee that a particular insurer will offer cover on particular terms. Eligibility and the proposed insurance arrangements must therefore be checked rather than assumed.
Flood risk and mortgage lender requirements
The CML Lenders’ Handbook referred to when this article was first published is now the UK Finance Mortgage Lenders’ Handbook. More importantly, mortgage lenders have not necessarily taken a uniform approach to flood risk.
Flood-related wording may appear in requirements concerning environmental reports, buildings insurance, planning conditions or matters that must be reported to the lender. A lender may also amend its position over time.
This means that a lender’s current published requirements do not necessarily establish what that lender required when an earlier purchase completed.
The Lexsure Lender Archive flood risk page can help establish the lender-specific requirements recorded for a particular lender and transaction date. This may be relevant when investigating a complaint, professional negligence claim or question about whether a property was acceptable security at the time of purchase.
Historical lender requirements form only part of that investigation. The transaction file, search results, mortgage offer, insurance evidence, correspondence and report on title may also need to be examined. The absence of express lender wording does not, by itself, establish that flood risk was irrelevant or that the client did not need advice.
What should the report on title explain?
A report on title should do more than reproduce a search provider’s risk rating. Depending on the circumstances, the client may need to understand:
- the source and level of the reported risk;
- the limitations of the search result;
- any recommendation for further investigation;
- the need to establish the insurance position before committing to the purchase;
- the possible effect on value and mortgageability; and
- the possibility that flood risk could affect a later sale or remortgage.
The objective is not to predict whether the property will flood. It is to enable the client to make an informed decision and to understand when specialist advice is required.
When the problem appears years after purchase
Some owners only discover the practical significance of flood risk when they come to sell or remortgage. A buyer’s environmental search may identify a risk, a purchaser may ask about previous flooding, an insurer may impose a high excess, or a new mortgage lender may require further information.
The fact that the original purchase completed with a mortgage does not necessarily establish that the risk was properly investigated or explained. Equally, a later problem does not automatically mean that the original conveyancer was negligent. The evidence from the original transaction must be considered in the context of the information and requirements that applied at that time.
If flood risk is now holding up a sale or remortgage, see the When I Bought guide to flood risk discovered after purchase. It explains which documents from the original purchase may matter, why historical lender requirements can be relevant and how the advice given when the property was bought can be investigated.
The prediction from 2014
The original version of this article anticipated that mortgage lenders would pay greater attention to flooding as consumer concern increased. The historical record now demonstrates that lender-specific requirements concerning flood risk have not remained static.
The enduring lesson is that flood risk cannot be reduced to a tick-box question about whether a search was obtained. Conveyancers need to consider what the search reported, what further investigation was recommended, what the lender required, whether suitable insurance was available and what the client was told before becoming committed to the purchase.
This article provides general information for conveyancing professionals and does not constitute legal, surveying, environmental or insurance advice.
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