When you instruct a solicitor or conveyancer to buy a property, one of their first jobs is to order a set of searches against the land and its surroundings. Searches are enquiries made to third-party bodies — local councils, water companies, and environmental agencies — that reveal information the seller can't or doesn't have to disclose. Your lender will insist on them. Even if you're a cash buyer, skipping them is a serious risk. Here's exactly what each search covers, what it costs, and what happens when one throws up a problem.
What Are Conveyancing Searches?
Searches are formal enquiries submitted by your conveyancer to official bodies. They interrogate public registers and databases for anything that could affect the property's value, safety, or your ability to use it as intended. They are distinct from a survey — searches tell you about the land and its legal/environmental context; a survey tells you about the physical condition of the building.
Your conveyancer will order the core four searches as a matter of course. Optional searches are ordered based on the location and type of property.
See the full conveyancing process timeline for where searches fit within the overall transaction.
The 4 Main Searches: What They Cover and What They Cost
| Search Type | Who Supplies It | What It Reveals | Typical Cost |
|---|---|---|---|
| Local Authority (LLC1 + Con29) | Local council | Planning history, enforcement notices, road adoption, tree preservation orders, conservation area status, proposed road schemes | £50–£250 |
| Drainage & Water | Water company (e.g. Thames Water, Severn Trent) | Whether the property is connected to public sewers/water mains, whether public sewers run within the boundary | £30–£80 |
| Environmental | Environmental data provider (e.g. Groundsure, Landmark) | Contaminated land, landfill sites, flood risk (surface/river/sea), radon levels, industrial history | £50–£120 |
| Chancel Repair Liability | Land Registry / specialist search | Whether the property lies in an ancient parish where the owner may be liable for church chancel repair costs | £20–£30 |
Total for the core four: roughly £150–£500, depending on your provider and council fees.
Local Authority Search
The most significant of the four. It reveals whether planning permission was granted for extensions or outbuildings (and whether those works had the correct consents), any live enforcement notices, whether the road outside is publicly adopted (and who pays for its maintenance), and any scheduled road widening or compulsory purchase orders. In practice, a clear local authority search is one of the most reassuring things a buyer can receive.
Drainage & Water Search
This confirms the property connects to the public sewer and water main — almost always the case in towns and cities, but critical in rural areas where private septic tanks and boreholes are common. It also shows whether a public sewer runs within the garden boundary, which can restrict building works and extensions.
Environmental Search
Covers contaminated land (former industrial or petrol station sites), landfill proximity, and flood risk. The flood risk data here is often more detailed than the Environment Agency's free online maps. Radon levels — relevant in Cornwall, Devon, Derbyshire, and parts of Wales — are also flagged.
Chancel Repair Liability
Historically, owners of land in certain ancient parishes could be required to contribute to the cost of repairing the local parish church chancel. This liability was largely abolished for new buyers from October 2013, but for properties where the liability was registered before that date, it can still apply. The search costs under £30 and chancel repair indemnity insurance is cheap (around £20–£30) — worth doing on any older property.
Optional Searches Worth Considering
Depending on location, your conveyancer may recommend additional searches:
- Coal mining search — Essential in former mining areas (South Wales, Yorkshire, Derbyshire, County Durham, Nottinghamshire). Reveals past or planned mine workings that could cause subsidence. Cost: £40–£80
- Tin/brine/limestone mining — Specific to Cornwall, Cheshire, and parts of the Midlands. Cost: £30–£70
- HS2 search — If the property is near the HS2 corridor, this checks for compensation eligibility and safeguarded land. Cost: £35–£60
- Ground stability — Flags dissolution, natural cavities, or made ground. Useful in swallow-hole prone areas. Cost: £30–£60
- Flood risk (detailed) — A more granular flood report than the standard environmental search covers. Cost: £30–£100
Personal vs Official Searches: What's the Difference?
Local authority searches can be obtained in two ways:
- Official search: Ordered directly from the council. Carries council-backed insurance and is accepted by all lenders. Turnaround: 2–10 working days for most councils, but some stretched councils (particularly in certain London boroughs and large metropolitan areas) have been running at 4–8 weeks post-pandemic as backlogs persist into 2025.
- Personal search: Carried out by a private search company accessing public registers on your behalf. Faster (often 1–3 days) but backed by professional indemnity insurance rather than the council's liability. Most lenders accept them; check your mortgage offer conditions.
If your transaction is time-sensitive and your council is running slow, a personal search via an accredited provider is a legitimate alternative. A good conveyancer — see our guide on how to choose a conveyancer — will advise you which route is appropriate.
Why Your Lender Requires Searches
Your mortgage lender has a financial interest in the property. They need to know it isn't built on a contaminated site, has proper drainage connections, and isn't subject to a compulsory purchase order. Searches protect their security. Without them, they won't release funds. The only exception is search indemnity insurance (see below).
What Happens If a Search Reveals a Problem?
Most searches come back clear. When they don't, the response depends on the nature of the issue:
- Planning enforcement notice — Your solicitor will investigate whether it relates to works now regularised, or whether it's an active issue that needs resolving before exchange.
- Flood risk — You may need specialist flood risk insurance, or your lender may decline to lend. Investigate the flood resilience of the property and whether it has ever flooded. Our guide to flood risk and house buying covers flood zones, Flood Re eligibility, mitigation costs, and the post-2039 insurance landscape in detail.
- Contaminated land — Rarely fatal, but your solicitor may request a Phase 1 or Phase 2 environmental report. This adds cost (£500–£3,000) but gives clarity.
- Sewer in garden — Restricts where you can build. You can apply to Thames Water or your regional authority to have a sewer diverted, but this takes time and money.
- Chancel repair — Take out indemnity insurance. Premiums are low.
When to Use Search Indemnity Insurance
If your transaction is cash-only and you're buying in a hurry, some buyers opt for search indemnity insurance rather than waiting for official searches. This is also used by lenders on remortgages where the original searches are more than six months old. The policy covers you if a search would have revealed an issue. Premiums are typically £50–£300 depending on property value.
It's not a substitute for searches on a purchase where time allows — you're covering uncertainty rather than eliminating it.
Bottom Line
Searches are non-negotiable on a mortgaged purchase and strongly advisable on cash purchases. Budget £250–£500 for the core four. If you're in a former mining area, near a flood plain, or close to HS2, budget for the relevant optional searches too. A slow council shouldn't panic you — your conveyancer can switch to a personal search if the timetable demands it. Most searches come back clear; the ones that don't usually have workable solutions.
For an overview of everything else your solicitor is doing at the same time, see our guide to the conveyancing process timeline. If you haven't yet instructed a solicitor, our guide on how to choose a conveyancer in the UK covers what to look for — including how to avoid the cheapest-quote trap. And before you instruct anyone, it's worth understanding what type of home survey you'll need alongside the searches. If you are buying a probate property, note that the TA6 form will often have limited answers — see our guide to buying a probate property UK for how to handle the specific due diligence required. Where an environmental search returns a radon classification, see our guide to radon gas in UK homes: testing, regulations and mitigation for next steps and typical remediation costs.
Related guides: conveyancing: offer to exchange UK — the full timeline from offer to exchange, including how searches sit within it; stamp duty land tax UK guide — understanding your SDLT bill before completion; boundary disputes UK: fences, hedges and walls — when the local authority search surfaces boundary issues that need resolving before exchange; conveyancing disbursements explained — a complete breakdown of every third-party cost your solicitor will charge on top of their legal fee, including when each is paid and the red flags to spot in a vague quote; Japanese knotweed mortgage UK — if an environmental search or survey flags knotweed, this guide covers the RICS 4-category framework, what lenders require, and treatment costs; conveyancing for new builds vs resale properties — how searches work differently for new build purchases, where the developer's solicitors control the legal pack, and what additional due diligence is required before exchange.