Buying a home is exciting, but it is also a legal commitment. Before you exchange contracts, your conveyancer will carry out a series of searches. These are enquiries sent to councils, environmental bodies, water companies and other agencies. They reveal details about a property that a viewing, survey or casual conversation with the seller will not show. Searches are not there to slow things down. They are there to stop you inheriting someone else's problem – or at least to make sure you know about it while you can still negotiate.

Why searches are your early warning system

Conveyancing searches usually begin once your offer is accepted. They can take a few days or several weeks, depending on the area and the backlog at the relevant bodies. Your solicitor or licensed conveyancer will order them alongside the title checks and enquiries of the seller. The cost is typically a few hundred pounds, but the information can save thousands. If a search reveals a serious issue, you have options: ask the seller to fix it, renegotiate the price, arrange specialist insurance, or walk away. Once contracts are exchanged, those options largely disappear. That is why searches should never be rushed.

Local authority searches: planning, roads and nearby nuisances

The local authority search is the cornerstone of conveyancing. It usually has two parts: the Local Land Charges Register and the CON29 enquiries. Together they can reveal:

• Planning permissions and building regulation approvals nearby, including extensions, loft conversions, new housing or commercial developments.
• Road schemes, new road proposals, compulsory purchase orders and traffic management plans.
• Whether the road and pavement outside are adopted – that is, maintained at public expense. If they are not, you could be liable for a share of repair costs.
• Conservation areas, listed buildings, tree preservation orders and Article 4 directions that restrict permitted development.
• Enforcement notices, contaminated land notices, noise abatement notices and other regulatory actions.
• Public rights of way, footpaths and any proposals that affect access.

Some councils offer optional enquiries for an extra fee, covering matters such as radon, landfill sites or mobile phone masts. A good conveyancer will tailor the search to the property and the postcode, not simply order the cheapest standard pack.

Environmental searches: flood risk, contamination and ground stability

An environmental search draws on data from the Environment Agency, the British Geological Survey, historical maps and other records. It highlights risks that could affect your mortgage, insurance or future liability. Typical findings include:

• Flood risk from rivers, the sea, surface water and groundwater. Even a property far from a river can be at risk from surface water flooding.
• Contaminated land, often linked to former industrial use such as gasworks, factories, tanneries or landfills.
• Subsidence risk from mining, natural cavities or shrinkable clay soils.
• Radon gas, which occurs naturally in some parts of the UK and can require remedial measures.
• Proximity to waste sites, pollution sources or permitted industrial processes.

If the search flags a high flood risk, insurers may charge more or refuse cover, and a lender may decline a mortgage. Contaminated land can leave an owner liable for clean-up costs in certain circumstances. In these cases, your conveyancer may recommend a specialist report, an indemnity policy or further enquiries before you proceed.

Drainage and water searches: pipes, sewers and surface water

A drainage and water search is made to the local water company. It confirms whether the property is connected to mains water and public sewers, and it shows the location of pipes and sewers in relation to the property. Key points often include:

• Whether drains and sewers are public or private, and who is responsible for maintenance.
• Whether a public sewer or water main runs under the property, which can affect building work and access rights.
• Surface water drainage arrangements and any charges for surface water removal.
• Build over agreements, easements, pumping stations and adopted drainage infrastructure.

If a public sewer runs beneath your home, the water company has a right to access it for repairs. You may also need a build over agreement before extending. If drains are shared with neighbours but not adopted, you could be responsible for a share of maintenance costs. These are practical, ongoing liabilities that are far better understood before you commit.

Additional searches that might matter for your postcode

Depending on where you are buying, your conveyancer may recommend extra searches. These are not universally required, but they can be crucial in certain areas:

• Coal mining search in former mining areas, to check for past or planned underground workings.
• Brine subsidence search in parts of Cheshire, where salt extraction has caused ground movement.
• Tin mining search in Cornwall and parts of Devon.
• Chancel repair search, which checks for a historic liability to contribute to church repairs. This can be insured against.
• Commons registration and village green searches, which may affect rights over nearby land.
• Reservoir, canal or major infrastructure searches, including High Speed 2 or other large schemes.

In Scotland, the system differs: solicitors typically obtain a property enquiry certificate and local authority search, but the principle is the same. The goal is to uncover legal and physical risks attached to the property and its surroundings.

What to do with the results before you exchange contracts

Search results can be lengthy, but your conveyancer should summarise the important points clearly. Read that summary and ask questions. Useful questions include:

• Does anything in the searches affect mortgageability, insurance or future resale?
• Can the seller remedy the issue, provide a certificate or reduce the price?
• Do we need a specialist report, an indemnity policy or a retention from the lender?
• Are there ongoing liabilities, such as chancel repair, private drainage or an unadopted road?

If something unwelcome appears, you are not powerless. You can reopen negotiations, ask the seller to pay for remedial work, buy appropriate insurance, or decide the property is not for you. The important thing is to act before exchange, when you are still legally free to walk away. Searches do not guarantee a problem-free purchase, but they turn hidden risks into known risks. That is exactly what you need before you sign on the dotted line.