What solicitors check when buying a house in the UK

When you instruct a solicitor or licensed conveyancer to handle your purchase, they order a standard package of searches before you exchange contracts: a title check with HM Land Registry, a local authority search (LLC1 and CON29), a water and drainage search (CON29DW), and an environmental search. On top of those property-specific checks, they also verify your identity, confirm your source of funds, and satisfy anti-money-laundering (AML) requirements. Together, these checks uncover legal burdens, planning problems, drainage issues, contamination risk, flooding, and location-specific hazards that are invisible at a viewing.

Here is a quick breakdown of what is standard and what depends on your location or lender:

Standard for almost every purchase:

• Title register and plan from HM Land Registry
• Local authority search (LLC1 local land charges register + CON29 standard enquiries)
• Water and drainage search (CON29DW)
• Environmental search (flood, contaminated land, ground stability, radon flag)
• Identity verification and AML/source-of-funds checks

Location or lender dependent:

• Coal mining search (former coalfield areas)
• Tin or hard-rock mining search (Cornwall, Devon)
• Brine pumping search (parts of Cheshire)
• Radon report (high-radon zones identified by UK Radon guidance)
• Chancel repair liability search (historic parishes)
• Commons registration search
• Flood risk report (where environmental search flags elevated risk)

Key takeaways

Your solicitor's checks when buying a house cover four standard searches (title, local authority, water and drainage, environmental), plus identity and AML checks, with location-specific searches added where the property or lender requires them.

Table of Contents

What every buyer should know about conveyancing searches

The local authority search is almost always the slowest item in the process. Turnaround times vary from one council to the next, and a delay there can push back your exchange date by weeks. Your conveyancer should order it as early as possible, ideally as soon as the contract pack arrives.

Searches are paid as disbursements, meaning you pay the actual third-party cost rather than a marked-up solicitor fee. The full standard package typically costs between £200 and £450 depending on the council and the search provider, according to conveyancing guides. That figure is modest when set against the risk of buying a property with an unregistered planning enforcement notice or a sewer running beneath the garden.

Most searches return nothing alarming. The practical value is that a flagged result gives you the right to renegotiate the price, request indemnity insurance, commission a specialist survey, or, in serious cases, withdraw before exchange without losing your deposit. The government's home-buying guidance positions these pre-contract enquiries as a core part of a buyer's due diligence, not an optional extra.

Pro Tip: Ask your conveyancer on day one which searches they plan to order and whether any location-specific searches apply to your property. Getting that list confirmed early means no last-minute additions that delay exchange.

What the standard searches actually check

Understanding what each search covers helps you read the results clearly and ask the right questions when something is flagged. The standard search package covers four distinct areas.

Title check with HM Land Registry

Your conveyancer retrieves the official title register and title plan from HM Land Registry early in the transaction. The register confirms who legally owns the property, lists any charges (such as a mortgage the seller must redeem on completion), and records any restrictions or covenants that affect what you can do with the land.

Common red flags include: a restriction requiring a third party's consent before sale, a charge that the seller's solicitor has not yet arranged to discharge, or a discrepancy between the title plan and the physical boundaries of the property. If the title is unregistered (rare but still possible for older properties), your conveyancer will need to review the original title deeds instead.

Local authority search: LLC1 and CON29

The local authority search has two parts. The LLC1 searches the local land charges register and reveals matters such as financial charges on the property, listed building status, conservation area designation, and tree preservation orders (TPOs). The CON29 is a set of standard enquiries that covers planning permissions granted or refused, building regulations approvals, enforcement notices, proposed road schemes, and whether the road serving the property is publicly adopted (maintained at public expense) or private.

Red flags to watch for:

• An outstanding enforcement notice for unauthorised building work
• A planning condition that restricts use of the property
• A private road that you would be responsible for maintaining
• A TPO that limits what you can do with trees on the plot

If the CON29 reveals an unadopted road, your solicitor will check whether a road adoption agreement is in place and advise whether a contribution to future maintenance costs is likely.

Water and drainage search (CON29DW)

The CON29DW, carried out with the relevant water authority, confirms whether the property is connected to the public mains water supply and the public sewer. It also shows whether any public sewer or drain runs within the boundary of the property, which matters because building over or near a public sewer requires consent from the water company and can restrict future development.

A sewer running beneath the garden is not necessarily a problem, but it does affect planning for extensions or outbuildings. The search also flags whether the property is in a sewer flooding risk area.

Environmental search

The environmental search draws on data from the Environment Agency and other sources to flag flood risk, contaminated land indicators, ground stability issues, and radon potential. Critically, a flag on an environmental search does not confirm that contamination is present; it identifies that the property falls within a risk zone based on historical land use or proximity to a risk source.

Pro Tip: If the environmental search flags contaminated land or ground instability, do not simply accept indemnity insurance as the only remedy. Ask your conveyancer whether a Phase 1 environmental survey is warranted before you commit.

Common environmental red flags and typical next steps:

• Flood risk flag: Check the flood zone designation. Zone 2 or 3 may affect your ability to obtain affordable buildings insurance. A specialist flood risk report can clarify the actual risk level.
• Contaminated land indicator: A Phase 1 environmental survey reviews historical land use. If that raises concerns, a Phase 2 intrusive investigation may follow.
• Radon flag: Properties in high-radon areas identified by UK Radon guidance may require a radon test and, if levels are elevated, remediation measures such as a radon sump.
• Ground stability: Former mining areas or areas with shrinkable clay may warrant a specialist structural engineer's inspection.

Which optional searches might apply to your property

Location determines which additional searches your conveyancer recommends. Specialist legal commentary supports the view that buyers should consider all local-risk searches appropriate to the area, not just the standard package.

Chancel repair liability deserves a specific mention. In some historic parishes, properties can be liable to contribute to the cost of repairing the chancel of the local parish church. The risk is small but real, and the usual remedy is a one-off indemnity insurance premium, which is inexpensive. Your lender may require this insurance as a condition of the mortgage offer.

Individual optional searches typically add a modest additional cost each to your disbursements. If your conveyancer recommends several, budget extra on top of the standard package. For a fuller picture of what premium conveyancing services include, it is worth reviewing what your chosen firm covers as standard.

Financial, identity and anti-money-laundering checks

Property transactions are a known target for money laundering, which is why solicitors are legally required to verify your identity and satisfy themselves about the source of your funds before proceeding. These checks are not optional and apply to every buyer, regardless of how straightforward the purchase appears.

Your conveyancer will typically ask you to provide the following:

1. Photo ID: A valid passport or driving licence. Some firms use digital ID verification platforms; others require certified copies. 2. Proof of address: A recent utility bill or bank statement (usually dated within three months). 3. Bank statements: Typically three to six months of statements showing the accumulation of your deposit funds. 4. Source of deposit evidence: If funds have come from a property sale, an inheritance, or a bonus, your conveyancer will want documentary evidence of that origin. 5. Gifted deposit letter: If any part of your deposit is a gift, the donor must provide a signed letter confirming the gift is non-repayable, along with their own ID and bank statements. 6. Mortgage offer: Once issued by your lender, your conveyancer needs a copy to check the conditions and report on title to the lender.

The source-of-funds check looks for anything that cannot be explained by your stated income or documented financial history. Unexplained large deposits, multiple transfers from third parties, or funds routed through several accounts will prompt further questions. The process is not designed to be intrusive; it exists to protect you and the integrity of the transaction.

Prepare these documents before you instruct a solicitor. Delays in providing ID or fund evidence are one of the most common reasons a transaction stalls in its early stages. If you are sharing documents electronically, use secure methods; guidance from the National Cyber Security Centre on Cyber Essentials is a useful reference for safe document sharing.

What happens if a search flags a risk?

A flagged search result is not automatically a reason to walk away. Your conveyancer will assess the severity of the issue and recommend one of several responses, depending on what has been found.

The typical options, in rough order of seriousness:

Further investigation: For environmental flags or structural concerns, the first step is usually a specialist survey or report rather than an immediate decision. A Phase 1 environmental survey or a structural engineer's inspection gives you the evidence to make an informed choice.

Ask the seller to resolve it: If the search reveals an outstanding planning enforcement notice or an unresolved building regulations matter, you can ask the seller to regularise it before exchange. This is common with retrospective planning applications or completion certificates for older works.

Renegotiate the price: Where a risk cannot be resolved but can be quantified, a price reduction may be appropriate. A property in flood zone 3 with expensive insurance implications is a legitimate basis for renegotiation.

Indemnity insurance: For certain legal defects, such as a missing planning consent for a historic extension or a chancel repair liability, indemnity insurance is a practical and widely accepted remedy. Premiums are usually a one-off payment and are often modest. Your lender will need to approve the policy.

Delay exchange: If a search result is serious but potentially resolvable, your conveyancer may advise delaying exchange until the matter is clarified. This is preferable to exchanging with an unresolved risk, since you are legally committed once contracts are exchanged.

Withdraw: In rare cases, a search reveals a risk serious enough to make the purchase unviable. Withdrawing before exchange means you lose your search costs and any survey fees, but you do not lose a deposit.

Pro Tip: Search results can affect your mortgage offer. If your lender's valuer or underwriter becomes aware of a flood risk or contamination flag, they may impose conditions or reduce the loan amount. Tell your conveyancer immediately if your lender raises any concerns after the mortgage offer is issued.

How searches differ from a structural survey

Searches and surveys answer different questions. Confusing the two is a common mistake that can leave buyers with an unexpected repair bill after completion.

An environmental search that flags contaminated land or ground instability is a prompt to commission a Phase 1 environmental survey, not a substitute for one. A Phase 1 report reviews historical land use and identifies pathways by which contamination could affect the site; it typically costs £500–£2,000 and takes two to four weeks. If Phase 1 raises concerns, a Phase 2 intrusive investigation (soil and groundwater sampling) follows, at significantly higher cost and time.

A structural survey, by contrast, is the right tool when you are buying an older property, a property that has been extended, or one where the mortgage valuation has flagged a concern. A RICS Level 3 Building Survey is the most thorough option and is worth commissioning for any property built before 1930 or showing visible signs of movement or damp.

The practical rule: searches protect you from legal and location-based risk; a survey protects you from physical and structural risk. For most purchases, you need both.

How long searches take and what they cost

Search timelines vary, and the local authority search is reliably the most unpredictable. Planning your exchange date without accounting for search turnaround is one of the most common causes of conveyancing delays. For a detailed look at the full conveyancing timeline, the picture is broader than searches alone.

The full standard package (local authority, water and drainage, environmental) typically costs a moderate sum in total, with the local authority element being the largest variable. Some councils process searches within a week; others take four to six weeks during busy periods. Personal searches (carried out by an agent visiting the council directly) can be faster but may not be accepted by all mortgage lenders.

Search fees are disbursements, meaning they are paid to the third-party provider and passed through by your solicitor at cost. They are generally non-refundable if the transaction falls through, since the searches have already been carried out. Budget for them as a definite cost from the point you instruct. For a full breakdown of what to expect on solicitor costs, including disbursements, it is worth reviewing a detailed fee guide before you commit.

Stamp duty land tax is a separate and usually larger cost. The official stamp duty calculator lets you confirm your liability before exchange so there are no surprises at completion.

When solicitors order searches and what documents you need to provide

Searches are ordered after the contract pack has been received from the seller's solicitor and before exchange of contracts. Your conveyancer will review the draft contract and title documents first, then raise any initial enquiries with the seller's solicitor before ordering searches. The local authority search is often ordered early in this phase to avoid it becoming the bottleneck.

The government's home-buying guidance is clear that these pre-contract enquiries are a buyer's responsibility, carried out through their conveyancer. Providing your documents promptly is the single most effective thing you can do to keep the process moving.

Here is the step-by-step checklist of what to have ready:

1. Photo ID: Passport or driving licence (original or certified copy, or digital verification as required by your firm). 2. Proof of address: Utility bill or bank statement dated within three months. 3. Proof of deposit funds: Three to six months of bank statements showing the deposit accumulating in your account. 4. Gifted deposit documentation: Donor's signed letter, ID, and bank statements if any part of the deposit is a gift. 5. Mortgage offer: Forward to your conveyancer as soon as it is issued by your lender. 6. Precise property details: Confirm the full postal address and title number (if known) so searches are registered against the correct property. An error in the address or plan can invalidate a search result. 7. Source of any unusual funds: If you have received an inheritance, bonus, or proceeds from a previous property sale, have the relevant documentation ready before your conveyancer asks.

A practical note on accuracy: the property address and plan used for searches must match the title exactly. If the property has recently been renumbered, has a shared access, or sits on a plot that differs from the postal address, flag this to your conveyancer immediately. Inaccuracies cause delays and, in some cases, require searches to be reordered at additional cost.

When to commission further investigation and where to find authoritative guidance

An environmental search flag is the most common trigger for additional investigation, but it is not the only one. Knowing when a flag warrants further action, rather than simply accepting indemnity insurance, is where good conveyancing advice makes a real difference.

A Phase 1 environmental survey is appropriate when the environmental search identifies a former industrial use, a landfill site, or a petrol station within close proximity to the property. Phase 1 typically costs £500–£2,000 and takes two to four weeks. If Phase 1 identifies a credible pathway for contamination to affect the site, a Phase 2 intrusive investigation follows. Phase 2 involves soil and groundwater sampling and is considerably more expensive and time-consuming; costs vary widely depending on the extent of the investigation required.

For structural or subsidence concerns, a specialist structural engineer's inspection is the appropriate next step rather than a standard RICS survey. If the engineer identifies active movement, a monitoring programme over several months may be required before a lender will proceed.

Pro Tip: The four authoritative sources every buyer should bookmark are: HM Land Registry for title information, gov.uk home-buying guidance for the overall process, the Environment Agency for flood and contamination data, and UK Radon for radon zone checks. These are primary sources, not third-party summaries, and your conveyancer should be referencing them directly.

For radon specifically, UK Radon's guidance explains the action level (currently 200 Bq/m³ as an annual average) and the remediation options available. If your property is in a high-radon area, a radon test before exchange gives you hard data rather than a risk flag. Testing kits are inexpensive and results take around three months, so factor that into your timeline if radon is a concern.

Why these checks are worth every penny

Conveyancing searches are sometimes treated as a bureaucratic hurdle, a box to tick before exchange. That framing misses the point entirely.

The searches your solicitor orders are, in practical terms, your only opportunity to interrogate the legal and environmental history of a property before you are legally committed to buying it. A viewing tells you whether you like the kitchen; a local authority search tells you whether the extension was built without planning permission. A structural survey tells you whether the roof needs replacing; an environmental search tells you whether the site was formerly a dry-cleaning depot with residual solvent contamination in the ground.

The Report on Title, which your conveyancer produces once searches and enquiries are complete, is the document that brings all of this together. Read it carefully before you authorise exchange. If anything in it is unclear, ask your conveyancer to explain it in plain terms. That conversation, before exchange, is the moment to raise concerns, negotiate, or pause. After exchange, your options narrow considerably.

The cost of the full search package is modest relative to the purchase price of any property. The cost of buying without them, or of exchanging before you have read and understood the results, can be very much higher.

Fixed-fee conveyancing with searches included

Conveyancing-solicitor connects you with SRA- and CLC-regulated firms that handle the full search process on your behalf, from ordering the standard package to interpreting flagged results and advising on next steps. Fixed-fee quotes mean you know your disbursement costs upfront, with no hidden additions when optional searches are needed. The panel firms cover buyers across the UK, with local knowledge of the councils and search providers that affect turnaround times in your area.

If you are ready to get a clear picture of your total conveyancing costs, including search disbursements, get an instant conveyancing quote and compare fixed-fee options from vetted firms today. For a broader view of what you will spend beyond the asking price, the full cost of buying a home guide sets out every line item clearly.

Sources

These are the primary sources your conveyancer should be drawing on, and the ones worth bookmarking for your own reference during the purchase process.

HM Land Registry: Search the register to confirm the registered owner of a property before you make an offer. Your conveyancer retrieves the official title register and plan once you are under offer.

Gov.uk home-buying guidance: The government's step-by-step guide to buying a home, covering the role of searches and enquiries in the pre-contract phase. Useful for understanding where searches fit in the overall timeline.

Environment Agency: Check flood zone designations for any property using the flood map for planning. Useful before you make an offer on a property in a low-lying or riverside location.

UK Radon: Enter a postcode to check whether a property falls in a high-radon area. Use this before exchange if the environmental search has flagged radon potential, or if the property is in the South West, parts of Derbyshire, or Northamptonshire.

Stamp duty calculator: Confirm your stamp duty land tax liability at any point in the process. Factor this into your budget alongside search disbursements and solicitor fees. For a detailed explanation of how stamp duty works, the stamp duty guide covers thresholds, reliefs, and worked examples.

For questions to raise with your conveyancer at each stage, the guide on what to ask a property solicitor is a practical companion to this article.

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