Buying a Property at Auction: Key Legal Considerations

This guide covers buying property at auction in England.

1. Know Which Type of Auction You Are Bidding In

Not every “auction” works the same way, and the difference matters.

• Traditional (unconditional) auction: a successful bid creates a binding contract straight away, whether you bid in the room, online, by telephone or by proxy. You usually pay a deposit, often 10%, on the day, and must complete within the period set by the conditions, commonly 20 working days or 28 days.
• Modern method of auction (conditional auction): you usually sign a reservation agreement and pay a reservation fee when you win, and must then exchange and complete within the deadlines in the terms. Those deadlines, and the point they run from, vary between operators. Some allow 28 days to exchange and a further 28 to complete. Others set 56 days from receipt of the draft contract. The reservation fee is generally payable on top of the purchase price, can run to several thousand pounds, and may be non-refundable. Check the refund provisions before you bid.

Tip: Read the auctioneer’s terms before you register, so you know exactly when you become committed and what you could lose.

2. Conduct Thorough Due Diligence on the Legal Pack

Auction lots can present legal or structural issues that require careful investigation. Ask your solicitor to review the legal pack well before the auction date. This should include the title and plan, any registered charges or restrictions, leases, planning and building regulation documents, searches, and the management pack for leasehold property.

Watch for:

• unregistered or possessory titles
• short leases
• high service charges or ground rents
• missing consents
• indemnity policies offered in place of proper documents.

Missing documents can be a warning sign in themselves. Also check for any addendum the auctioneer publishes, sometimes on the auction day itself, because it may form part of your contract.

Tip: If the pack is incomplete or arrives too late to review properly, it is usually safer not to bid on that lot.

3. Arrange Your Finances in Advance

At a traditional auction, you will usually need to pay the deposit on the day, often subject to a minimum figure. Any buyer’s premium or administration fee may also be payable immediately. Completion follows within weeks.

Do not rely only on an agreement in principle. It does not guarantee a mortgage offer, or that the lender will accept the particular property. Before bidding, establish that the property is acceptable to your lender and that funds can be released within the contractual deadline. Do not assume bridging finance will be available if your mortgage is delayed. A lender’s valuation may also come in below your winning bid, leaving you to cover the shortfall.

Tip: Before bidding, confirm how you will meet the completion deadline if your lender reduces or delays the loan. Only proceed if that contingency is realistic and affordable.

4. Understand the Special Conditions and the Extra Costs

The general auction conditions are often standard. The special conditions in the legal pack, however, can place significant extra costs on the buyer, such as:

• the seller’s legal fees and search costs
• arrears of rent, service charge or ground rent
• VAT on the purchase price where applicable (check the VAT treatment carefully for commercial property)
• apportionments and other sums payable on completion.

Stamp Duty Land Tax: the residential thresholds that took effect on 1 April 2025 still apply.

• The standard nil-rate band is £125,000.
• First-time buyers’ relief applies up to £300,000 on qualifying purchases of £500,000 or less.
• Where the relevant conditions are met, a 5% surcharge applies to additional residential property, and a further 2% surcharge applies to non-UK residents.
• Commercial and mixed-use purchases are taxed under different rules.

Some auction fees, and costs you pay on the seller’s behalf, may form part of the chargeable consideration for SDLT. Ask your solicitor to check the calculation rather than working from the hammer price alone.

Where required, an SDLT return must be submitted, and any tax paid, within 14 days of the transaction’s effective date, usually completion.

Tip: Ask your solicitor to set out the total cost of the purchase, not just the hammer price, before you fix your maximum bid.

5. Buying Tenanted Residential Property After the Renters’ Rights Act 2025

Many auction lots are sold with tenants in place, and the rules for England’s private rented sector changed on 1 May 2026.

• Section 21 “no-fault” evictions were abolished.
• Most existing assured shorthold tenancies became assured periodic tenancies.
• For assured tenancies under the new regime, landlords seeking possession must rely on an applicable statutory ground in Schedule 2 to the Housing Act 1988 and follow the required notice and court procedures.
• Transitional rules may preserve the previous regime where possession proceedings were started in time.

If you buy a tenanted property, you cannot assume you will get vacant possession, and you will take on the landlord’s obligations. Before bidding, check:

• the tenancy documents
• the deposit protection
• the rent history and any arrears
• whether the required information has been given to the tenants
• the status of any notices or possession proceedings.

For tenanted commercial property, check whether the tenant has security of tenure under the Landlord and Tenant Act 1954.

Tip: Price a tenanted property as an investment, not as a home you can move into.

6. Inspections, Surveys and Insurance

Auction properties are usually sold “as seen”, and the seller is unlikely to fix anything after the sale. Attend the viewings and commission an independent survey before the auction, so that any costly repairs or structural problems are reflected in your budget.

Tip: Ask your solicitor when risk passes and who must insure under the auction conditions. Arrange any necessary cover from that point, checking any existing landlord or block insurance where relevant.

7. Identity and Source of Funds Checks

Auctioneers and solicitors must carry out anti-money laundering checks. Expect to provide photographic ID and proof of address when you register to bid, and full evidence of where your deposit and purchase money comes from. Funds from a third party or from abroad can cause delays if they are not explained in advance.

Tip: Give your solicitor your source of funds evidence before auction day, not after it.

8. The Consequences of Failing to Complete

Once you are contractually committed, there is no cooling-off period. This applies to pre-auction offers as well, once contracts are exchanged. If you fail to complete on time, the seller can usually serve a notice to complete. You may then lose your deposit, pay contractual interest and face a claim for the seller’s losses.

Tip: Only bid when your legal review, survey and finance are all in place, and set a maximum figure you will not exceed.

Buying at auction can be very rewarding if you plan carefully and have expert legal support. Our conveyancing team can review the auction legal pack, advise you on the conditions and costs, and guide you from pre-auction advice through to completion.

For further advice on buying at auction, contact our conveyancing specialists today.