Key Takeaways
- If your solicitor missed the completion deadline, you may claim compensation where unreasonable delay caused foreseeable financial loss.
- Late completion interest arises under the property contract, while negligence damages require proof that your solicitor caused the loss.
- You must show that a competent conveyancer would have acted differently and that completion would have happened on time without the breach.
- Recoverable losses may include forfeited deposits, higher mortgage costs, SDLT overpayments, wasted fees, penalties and temporary accommodation costs.
- Gather your conveyancing file, contract, mortgage offers, correspondence, completion statement and documents proving every financial loss immediately.
- Third-party delay does not always excuse your solicitor, who should chase outstanding parties and warn you about completion risks.
- Claims usually have a six-year limit from breach, with a three-year period where you discovered the breach and loss later.
- Go Legal is rated Excellent with over 300 five-star reviews and 5/5 on Trustpilot and Google, placing our solicitors among the best-reviewed litigation lawyers in England and Wales.
Can I Claim Compensation If My Solicitor Missed the Completion Deadline?
Yes. If your solicitor missed the completion deadline and their unreasonable delay caused foreseeable financial loss, you may have a professional negligence claim in England and Wales.
Time is often critical in a property transaction. A mortgage offer expiry, an SDLT deadline, a chain-agreed date or an interest rate lock can turn a short delay into a serious loss. The consequences include a lost deposit, higher mortgage costs, SDLT overpayment, contractual interest, wasted fees, temporary accommodation and even a collapsed chain.
A missed completion date does not automatically mean the solicitor was negligent. Lenders, the other side, search providers or problems elsewhere in the chain can all delay a transaction. The question is whether the solicitor handled the problem with the reasonable skill and care expected of a competent conveyancer.
Every claimed loss is tested against three questions:
- Was the solicitor’s delay unreasonable? Look at what work was outstanding, how long the file sat without action and whether the solicitor acted when they should have done.
- Did the delay cause the missed deadline? Ask whether completion would probably have happened on time if the solicitor had acted properly.
- Was the loss foreseeable? Consider whether the solicitor knew, or should have known, about a mortgage offer expiry, onward purchase, rate lock or other critical deadline.
A tight timetable alone does not prove a conveyancing negligence claim. The evidence must show that the delay was avoidable and that it caused a financial loss.
What Is Your Conveyancing Solicitor’s Duty When Completion Deadlines Matter?
A conveyancing solicitor must exercise reasonable skill and care in progressing a property transaction, which includes identifying deadline risks and acting to manage them.
In practice, that means identifying material dates, acting promptly on instructions, pursuing outstanding matters and warning the client when exchange or completion is at risk. Material dates commonly include a mortgage offer expiry, the end date of an SDLT relief, an agreed exchange date and a chain-agreed completion date.
The professional standard is described by reference to Bolam: the question is whether the solicitor’s work fell below the standard reasonably expected of a competent conveyancer. Paragraph 3.2 of the SRA Code of Conduct also requires solicitors to act promptly on client instructions. That obligation carries particular weight where one uncompleted task, such as satisfying a lender condition, stands between the client and completion.
A solicitor should also communicate realistically. If a lender condition is outstanding or searches are delayed, the client needs a clear explanation of the risk and a realistic revised timeline so they can decide what to do.
Delay caused by someone else rarely ends the enquiry. A solicitor’s duty includes managing third-party delay: chasing search providers, the lender, HM Land Registry and the other side’s solicitor. “The other side was slow” is therefore rarely a complete defence. The real issue is whether the solicitor spotted the risk, chased appropriately and explained the likely consequences.
Signs that a solicitor’s handling of a deadline may have fallen below the required standard include:
- The file sat untouched for weeks, or deadlines were repeatedly missed.
- A critical document, mortgage requirement or redemption statement was not chased.
- The solicitor failed to warn that exchange or completion would not happen on time.
- The solicitor failed to explain the consequences of missing the deadline, such as “your mortgage offer expires tomorrow”.
- The solicitor agreed to an unrealistic deadline without any caveat or advice.
Is Late Completion Interest the Same as Compensation From a Solicitor?
No. Late completion interest is a contractual liability between buyer and seller, while compensation from your solicitor is a separate claim for professional negligence. Confusing the two can lead to a claim being aimed at the wrong party.
Once contracts have been exchanged, the completion date is contractual. A solicitor generally cannot extend it on their own; any change needs the agreement of the other party.
The sale contract governs what happens if either side fails to complete on time. If the buyer’s money is not transferred by the deadline, the buyer may be in breach and may owe contractual compensation interest to the seller. The rate is normally set by the contract or the Standard Conditions of Sale. In the event of delayed completion, the usual first step is for the innocent party’s solicitor to serve a notice to complete, giving a new completion date, often ten working days later.
That contractual liability does not, by itself, prove that the buyer’s own solicitor was negligent. To pass the interest and other costs on to the solicitor, the buyer must show that the solicitor acted unreasonably, that this caused the late completion and that the resulting loss was foreseeable.
What Losses Can I Claim for Delayed Property Completion?
You can claim financial losses that your solicitor’s breach caused and that were reasonably foreseeable when the solicitor was acting for you.
Each category of loss is assessed on its own, so a claimant may prove one item and fail on another. Potentially recoverable losses include:
- A lost deposit, where the delay put you in breach of contract and the seller kept the deposit, often 10% of the price.
- A higher mortgage rate, where the original offer lapsed and the replacement costs more. The claim is usually the extra interest over the mortgage term or fixed-rate period. A replacement rate 1.5% higher on a large loan can produce a substantial loss once capitalised.
- SDLT overpayment, where completion missed the deadline for a relief or rate change.
- Wasted transaction costs, including survey, valuation, search and legal fees, if the purchase fell through. This can happen where a solicitor missed an exchange deadline and the seller sold to another buyer.
- Contractual late completion interest charged by the seller, commonly £50 to £100 a day.
- Loss of an onward purchase, including the deposit and costs on that transaction, or penalties imposed where the delay caused the chain to collapse.
- Hotel, storage and removal costs, where you had to move out and pay for temporary arrangements because completion was delayed.
- The higher price of a comparable replacement property, where the market moved after you lost the original. This is contentious and causation is hard to prove.
The causation question is: but for the solicitor’s breach, would this loss have been avoided? You must prove the delay was unreasonable and that it caused the loss, not simply that completion was tight.
Foreseeability is just as important. If you never told your solicitor about an onward purchase or a rate-lock deadline, those losses are harder to recover, although a competent solicitor would usually be expected to ask about your chain and your borrowing.
Late contractual completion should also be kept separate from HM Land Registry delays after completion. A missed completion deadline concerns whether the transaction completed when the contract required. Registration problems arise afterwards and involve different duties, risks and remedies.
To learn more about recoverable losses, read our article on professional liability for incorrect advice and which losses are recoverable.
How Do I Prove My Conveyancing Solicitor Caused My Financial Loss?
You prove a professional negligence claim by showing three things: the solicitor owed you a duty in contract, tort or both; they breached that duty; and the breach caused your financial loss.
In a delayed completion case, the transaction chronology is usually the most important evidence. It should show what the solicitor knew, when they knew it and what they did about it.
What Documents Do I Need for a Conveyancing Negligence Claim?
Useful evidence includes:
- The retainer letter, client care documents and the instructions you gave.
- A timeline showing the contract date, agreed exchange and completion dates, mortgage offer expiry and what actually happened.
- The contract, completion statement and any notice to complete or interest demand.
- The original and replacement mortgage offers, and lender correspondence.
- Your emails chasing the solicitor and their replies, or the absence of replies.
- Evidence of loss, including the new mortgage offer, an SDLT calculation, a forfeited deposit receipt, an onward purchase contract, invoices and bank statements.
Independent expert evidence from a conveyancing solicitor is often needed. The expert’s role is to state when a reasonably competent solicitor would have completed and why the delay was unreasonable.
How Can I Answer Common Defences From a Conveyancing Solicitor?
The defences raised in these claims are predictable, and each has a recognised answer:
- “The delay was caused by a third party”, such as the lender, HM Land Registry or the other side’s solicitor. The answer is that the solicitor’s duty included chasing those parties and warning you of the delay risk.
- “You didn’t give us complete information.” The answer is that the solicitor should have asked for it.
- “The deadline was always unrealistic.” The answer is that the solicitor should have warned you at the outset.
- “The delay made no difference; the transaction would have collapsed anyway.” This is a causation defence. It is answered with evidence that the transaction would probably have completed on time with proper handling.
Our solicitors have also written about causation in professional negligence claims and why loss is hard to prove.
What Laws and Deadlines Apply to a Professional Negligence Claim Against a Conveyancing Solicitor?
The Limitation Act 1980 sets strict time limits, and missing them can end a claim however strong the evidence of delay.
- Six years from breach. Under section 5 of the Limitation Act 1980, an action founded on simple contract must not be brought after six years from the date the cause of action accrued. For a completion deadline claim, that is usually measured from the breach.
- Three years from knowledge. Section 14A of the Limitation Act 1980 can give a later deadline for negligence claims where the relevant facts were not known when the cause of action accrued. The period is three years from the date you knew, or ought to have known, of the breach and the loss, if that expires later than six years from accrual.
- Fifteen-year longstop. For negligence claims not involving personal injury, section 14B of the Limitation Act 1980 imposes an overriding period of 15 years from the act or omission complained of.
Knowledge can matter in delayed completion cases. If the mortgage rate loss only became clear recently, for instance when you remortgaged at a higher rate, the three-year knowledge period may start from then.
A complaint, negotiation or pre-action letter does not stop time running. Paragraph 4.1 of the Professional Negligence Pre-Action Protocol confirms that the protocol does not alter limitation periods.
There are practical reasons to act promptly as well. Evidence degrades, the solicitor who handled your file may move firm or retire, and insurance arrangements change. Where a firm has closed, a claim may still be pursued against its professional indemnity insurers, as SRA-regulated firms must carry six-year run-off cover.
How Do I Start a Professional Negligence Claim Against My Conveyancing Solicitor?
You start by securing the conveyancing file, building a chronology and obtaining an independent assessment before any formal letter of claim is sent.
How Should I Gather Evidence and Raise a Complaint?
- Request the full conveyancing file. If the solicitor will not provide it, you can make a subject access request for your personal data.
- Collect your own records: the contract, original and replacement mortgage offers, completion statement, SDLT return, emails, letters and bank statements.
- Build a chronology of instructions, deadlines, chasers, warnings, missed actions and losses.
- Complain to the firm in writing, asking for an explanation, the relevant documents and any compensation proposal.
- Take independent advice before accepting any offer or signing anything that settles the matter.
That advice should come from a professional negligence solicitor rather than another conveyancing firm, which may have a conflict in criticising a fellow conveyancer. An early merits assessment should cover duty, breach, causation, the value of each loss and whether the cost of pursuing the claim is proportionate.
What Happens Before Court in a Conveyancing Negligence Claim?
The Professional Negligence Pre-Action Protocol sets out the steps before proceedings are issued:
- A preliminary notice may be sent to the solicitor, who should acknowledge it in writing within 21 days.
- Once grounds for a claim are identified, a detailed Letter of Claim should be sent setting out the breach, the loss, the causal link and the value of the claim, with a chronological summary, key dates and relevant documents.
- The solicitor has three months from the Letter of Acknowledgment to investigate and send a Letter of Response and/or Letter of Settlement. They may ask for more time.
Many claims settle at this stage because the solicitor’s insurers weigh the cost of defending the claim against the risk of liability.
You can also read about claiming compensation if your solicitor’s bad advice caused financial loss.
Our Winning Approach to Conveyancing Negligence Claims
We test, at the outset, whether the evidence proves unreasonable delay, transaction causation and foreseeability, and then recommend proportionate next steps.
Go Legal is a London-based commercial litigation law firm acting for individuals, directors, professionals and businesses across England & Wales. Our solicitors handle professional negligence claims against solicitors and other professionals, so there is no conflict in acting against a conveyancing firm.
We build a document-led chronology that identifies:
- Material instructions and deadlines given to the solicitor.
- Outstanding actions and missed opportunities to chase or escalate.
- Warnings given, or not given, before the deadline.
- The role of third parties and whether their delay should have been anticipated.
- The contractual consequences of late completion.
- Each claimed loss and the evidence supporting it.
This separates a service complaint from a compensation claim for financial loss and shows early whether third-party delay was truly unavoidable. Your first step is a free initial consultation with one of our qualified lawyers.
Frequently Asked Questions
Get Expert Help With Your Conveyancing Negligence Claim
If your solicitor missed a completion deadline, you may be entitled to compensation for financial losses such as a higher mortgage rate, wasted transaction costs, late completion interest, a lost deposit or additional SDLT. The decisive issues are whether the delay was unreasonable, whether it caused the loss and whether the consequences were foreseeable. Limitation periods continue to run while you wait, so delaying advice could put your claim at risk.
Our professional negligence solicitors can review your conveyancing file, reconstruct the timeline and assess the evidence against your former solicitor. We act against solicitors and can help you understand the strength and value of your claim before you take any further step. Call us on 0207 459 4037 or book a free consultation with our team.
