Flood Search In Conveyancing: What It Covers, What It Misses And How To Read The Result
A flood search is a report your conveyancer orders that screens a property against flood risk data for rivers, the sea, surface water and groundwater. It flags whether more checks are needed, but it reads mapped data, not whether the house will flood.
What Is A Flood Search?
A flood search is a desktop report from a commercial search provider, usually Groundsure or Landmark, that compares a property's location with national flood data. It is ordered by your conveyancer, either within the environmental search or as a separate specialist flood report.
A flood search sits alongside the other conveyancing searches:
- Environmental search. A general report covering contamination, ground stability and flooding. Groundsure states: "All of Groundsure's environmental reports include flood data as standard."
- Specialist flood report. A deeper flood-only report, such as Groundsure Flood or Landmark Flood, ordered when the standard search flags a risk or the buyer wants more detail.
Neither involves a visit to the property. Both read data about the location.
What Does A Conveyancing Flood Search Cover?
A conveyancing flood search covers the main sources of flooding at the property's location, using official and commercial flood data, and gives an overall risk rating with recommended next steps. The two main specialist products describe their coverage differently.
| Groundsure Flood | Landmark Flood | |
|---|---|---|
| Sources | All flooding sources, including 5m groundwater data | "All key sources of flooding" plus proximity to and elevation above historic flood events and watercourses |
| Expert review | Report with plain-English next steps | If a 'High Risk' is indicated by flood data, an Environmental Consultant at Argyll will review the risk |
| Example retail price | £48.60 | £54.00 |
Descriptions and prices as published by Safe-Move, a search reseller, read on 17 September 2026. Prices vary by reseller and may exclude VAT.
A typical flood search will show:
- The flood risk rating for rivers and the sea, surface water and groundwater at the location.
- Whether the site is near historic flood records or watercourses.
- Flood defences in the area, where data exists.
- An overall result and whether further action is recommended.
What Does A Flood Search NOT Tell You?
A flood search does not tell you whether this particular house will flood. It reads data about the location, so it cannot see floor levels, door thresholds, air bricks, drains or the protection fitted to the building, and it depends on flood maps that describe areas rather than buildings.
The limits to keep in mind:
- Area data, not the building. The Environment Agency states that its long term flood risk service does not tell you how likely it is that an individual property will flood. Search reports are built on the same kinds of data.
- Sources outside the models. The Environment Agency's service excludes flood risk from sources such as blocked drains and burst pipes. A search cannot see a blocked culvert down the road.
- Incomplete history. The Environment Agency notes about its own flood records: "The absence of coverage by Recorded Flood Outlines for an area does not mean that the area has never flooded."
- No view on insurance terms. A search may indicate insurability, but only a quote tells you the premium and flood excess for this house.
A "passed" flood search is therefore good news, not a guarantee. The seller's answers on the TA6 form and an insurance quote are what complete the picture.
How Much Does A Flood Search Cost?
A flood search typically costs £30 to £70, and the buyer pays it as part of the conveyancing search fees. A standard environmental search including flood data costs around £40 to £70, and a specialist flood add-on around £30 to £60.
| Search | Typical cost | Source |
|---|---|---|
| Environmental search (includes flood) | £40 to £70 | HomeBuyerCheck, 2026 |
| Specialist flood add-on | £30 to £60 | HomeBuyerCheck, 2026 |
| Groundsure Flood (reseller price) | £48.60 | Safe-Move, 17 Sep 2026 |
| Landmark Flood (reseller price, sites up to 2 ha) | £54.00 | Safe-Move, 17 Sep 2026 |
Your conveyancer may add a handling charge and VAT, so check the figure on your quote.
What Does A "Further Action Recommended" Result Mean?
A "further action recommended" result means the flood data shows enough risk at the location that the report suggests extra checks before you commit. It does not mean the house has flooded or will flood, and it does not mean you should withdraw.
It usually points to one or more of:
- A Medium or High risk rating from one source of flooding.
- Proximity to recorded flooding or a watercourse.
- A possible effect on insurance, where the report's insurability indicator is raised.
The report's own recommendations name the next step. Read which source triggered the result, because the next step for surface water is different from the next step for a river.
What Should You Do If The Flood Search Is Flagged?
If the flood search is flagged, find out which source of flooding caused it, get an insurance quote with the flood excess, and ask the seller about the property's flood history before exchange. Those three steps turn a flag into a decision.
Your three real options:
- Proceed — if the home can be insured on acceptable terms, has no flood history and the flagged risk is from a source you can protect against.
- Renegotiate — if insurance costs more, or protection needs fitting, reflect that in the price or ask the seller to fit it.
- Withdraw — if no insurer will cover flood at an affordable excess, or the flood history is repeated or withheld.
Before choosing, check the band for each source at the address with check the flood risk of any UK postcode, and request the Environment Agency's flood history: you can request the flood history for the area around an address or postcode; you may have to pay a fee; report sent by email within 20 working days. The full decision framework is in buying a house in a flood risk area, and insurance options are in flood insurance.
Is A Flood Search The Same As A Flood Risk Assessment?
A flood search is not the same as a flood risk assessment. A flood search is a desktop report for buyers during conveyancing, while a flood risk assessment is a site-specific study required for planning applications in flood risk areas, prepared by a consultant.
| Flood search | Flood risk assessment | |
|---|---|---|
| For | Buying a property | A planning application |
| Asked for by | Your conveyancer, as part of the searches | The local planning authority |
| Prepared by | A search provider | A flood risk consultant or engineer |
| Typical cost | Tens of pounds | Hundreds to thousands of pounds |
| Tells you | The mapped risk at the location | How development will be safe and not increase flood risk elsewhere |
If you plan to extend or rebuild a home in a flood zone, you may need the second one: see flood risk assessment.
Sources (Verified 17 Sep 2026)
| Claim | Source |
|---|---|
| Environmental search £40–£70; flood add-on £30–£60; Groundsure and Landmark main providers | HomeBuyerCheck, Groundsure report cost 2026 |
| Groundsure Flood: 5m groundwater data; price £48.60 | Safe-Move, Groundsure Flood |
| Landmark Flood coverage; consultant review; £54.00 | Safe-Move, Landmark Flood |
| Area not property; excluded sources | GOV.UK, Check your long term flood risk |
| Recorded flood outlines absence caveat | Recorded Flood Outlines |
| Flood history request | GOV.UK |
Frequently Asked Questions
Do I Need A Flood Search When Buying A House?
Most conveyancers order an environmental search, which includes flood data, as part of the standard search pack. A specialist flood report is usually added only when the standard search flags a risk or the property is near water.
Who Pays For The Flood Search?
The buyer pays, as part of the conveyancing search fees. An environmental search including flood data typically costs about £40 to £70, and a specialist flood report adds roughly £30 to £60.
Can A Flood Search Be Wrong?
A flood search reports mapped data for a location, so a house can differ from its area. Floor levels, protection and local drainage are not in the data, and flood records are incomplete, so combine the search with the seller's answers.
Does A Clear Flood Search Mean I Can Get Insurance?
Not necessarily. A search may indicate insurability, but each insurer uses its own data and sets its own premium and flood excess. Get a quote for the specific address before exchange.