In practice you need a solicitor to buy a house at auction, but the answer splits into two jobs done at two different times: reading the legal pack before you bid, and completing the purchase after the hammer falls. The second is the one most buyers arrange; the first is the one that decides what you bid.
Two Jobs, Two Different Weeks
Almost every answer to this question online treats a solicitor as one appointment. It is more useful to see it as two, because they are booked at different points in the week and only one of them can still change your mind.
| Before the hammer | After the hammer | |
|---|---|---|
| The work | Reading the legal pack and reporting on what is actually being sold | Conveyancing: exchange has happened, so this is completion |
| When | While the lot is still one of several you are considering | From the fall of the hammer to completion day |
| What it produces | A written view on title, special conditions, tenure and the true cost, in time to set a ceiling | Transfer, funds, SDLT return, registration |
| If you skip it | You bid on documents you have not read, and the conditions treat you as having read them | Not realistic on a financed purchase, and unusual on any purchase |
What the Law Actually Requires
Preparing transfer and Land Registry documents for someone else is a reserved legal activity under the Legal Services Act 2007 and is restricted to regulated firms. A person acting on their own behalf sits outside that restriction, so a cash buyer who wants to do their own conveyancing is not breaking a rule. It stays rare for two practical reasons. Lenders and bridging providers will require a conveyancer they recognise, and the timetable is short: under the RICS Common Auction Conditions the default completion date is 20 business days after the contract date unless the special conditions shorten it, and special conditions shorten it often.
Nothing in the law requires the legal pack to be reviewed at all. That is the point worth holding on to. The step no rule compels is the one carrying the commercial consequence.
The Bid Is the Binding Moment
At auction, exchange happens when the hammer falls. The deposit, usually 10 per cent, is payable that day, and the auction conditions proceed on the basis that you bid with knowledge of the documents in the pack whether or not you opened them. A point you did not know about therefore does not become the seller’s problem afterwards. It becomes a figure you absorb on a property you are already contractually bound to buy.
This is why sequencing matters more than the yes-or-no question. A solicitor instructed the morning after a successful bid does careful work on a decision that has already been made. The same firm, instructed four days earlier, can change the decision itself: a lower ceiling, a different lot, or a bid not made at all, for the cost of a review rather than the cost of a deposit.
Before You Raise Your Hand
A short list, in the order the week usually runs:
- The legal pack downloaded in full, with its contents checked against the documents the catalogue says are in it.
- A written review in hand covering title, the special conditions, tenure, tenancies and searches.
- The costs sitting on top of the hammer price confirmed from the pack itself: buyer’s premium, administration fee, the seller’s legal costs and any apportionments the conditions pass across.
- Funds arranged and evidenced on terms that survive a 20 business day completion.
- A conveyancer instructed and ready to act from the day after the sale, identity checks already done.
- A maximum bid written down, and whoever is bidding briefed to stop there.
The list has one deliberate feature. Only the third and fourth items can be priced properly once the pack has been read, which is why the review sits above them rather than alongside.
Can One Firm Do Both?
Frequently, and there is nothing wrong with it. The two roles simply ask different questions. A pre-bid review asks what this lot is worth to you and what to price in. Conveyancing asks how to complete cleanly on terms already fixed. What keeps the first question clean is a fixed fee payable whether or not you bid, so that the advice costs the same if the answer is to walk away.
If you use one firm for both, it is worth confirming at the outset that the pre-bid work is a written report rather than an informal look, and that it will be delivered before the sale rather than shortly after it.
How Bidq Handles This
Bidq does the first job and not the second. An auction legal pack review is carried out by SRA-regulated solicitors who read every document in the pack in full and report in writing on title, special conditions, tenure, tenancies, searches and the costs that sit above the hammer price. The standard report is £595 plus VAT within 48 hours, a 24-hour report is £895 plus VAT, and a complex transaction review is £1,495 plus VAT. Bidq does not carry out the conveyancing, so a buyer still instructs a conveyancer to complete; the review is what informs the bid before that point.
Frequently Asked Questions
What are the rules for buying a house at auction?
The binding rule is that the contract is formed when the hammer falls, not later. You pay the deposit that day, usually 10 per cent, and complete on the date in the special conditions, which defaults to 20 business days after the contract date under the RICS Common Auction Conditions. The conditions also treat you as bidding with knowledge of the legal pack.
How much money do I need to buy a house at auction?
On the day, the deposit plus the auctioneer’s fees, so around 10 per cent of the hammer price together with any buyer’s premium and administration fee. The balance follows on completion, typically within 20 business days, which is why bridging or an agreed facility matters more than a mortgage in principle. Add the seller’s legal costs where the conditions pass them to the buyer.
Do you pay stamp duty if you buy at auction?
Yes. Buying at auction changes the timetable, not the tax. SDLT applies to property in England and Northern Ireland on the same basis as any other purchase, with the return and payment due to HMRC within 14 days of completion. Scotland and Wales have their own equivalents. Additional property and non-resident rates apply where relevant.