Completion Day, What Actually Happens and Why It Sometimes Goes Wrong

What is Completion?

Completion is the final stage of a property transaction. It is the day on which:

• The buyer's solicitor sends the purchase funds to the seller's solicitor
• The seller's solicitor confirms receipt of funds
• The seller's mortgage (if any) is redeemed
• Legal ownership passes to the buyer
• The keys are released

From the moment completion is confirmed, the buyer owns the property and the seller must have vacated.

How Completion Works, the Money Flow

On a typical completion day, a chain of financial transfers occurs in strict sequence:

1. **The buyer's mortgage lender** transfers the mortgage advance to the buyer's solicitor's client account, usually by CHAPS (Cleared House Automated Payment System), which settles in real time.

2. **The buyer's solicitor** adds the buyer's own contribution (deposit balance and any other funds) and sends the total purchase price to the seller's solicitor by CHAPS.

3. **The seller's solicitor** receives the funds and confirms completion has occurred.

4. **The seller's mortgage** is redeemed, the seller's solicitor sends a redemption payment to the seller's lender.

5. **The balance** of sale proceeds is sent to the seller (after the lender redemption, estate agent fees, and legal fees are deducted).

In a chain, this process cascades: the seller's solicitor cannot send funds to the next seller's solicitor until they have received the buyer's funds. A chain of four transactions requires four sequential CHAPS transfers before the final keys can be released.

When Does Key Release Happen?

Keys are not released until the seller's solicitor has confirmed to the estate agent (and any other key holder) that completion funds have been received. In England and Wales, there is no set time of day for completion, it depends entirely on when the funds clear.

The standard completion time cited in contracts is 2:00 pm or 1:00 pm. If funds have not arrived by that time, the seller is technically in a position to serve a Notice to Complete and charge the buyer interest for each additional day. In practice, most solicitors allow a grace period and work to resolve the delay before taking formal steps.

What Can Delay Completion on the Day?

**Mortgage funds not arriving.** The most common cause of completion day delays is a mortgage lender failing to send funds to the buyer's solicitor in time. Lenders process dozens of drawdowns daily; administrative errors, internal compliance checks, or simple processing backlogs can cause funds to arrive late, sometimes after the cut-off time for CHAPS, which is 4:00 pm on business days.

**CHAPS cut-off times.** CHAPS payments must be initiated before the bank's own internal cut-off (often 3:00 pm or earlier) to clear on the same day. If a solicitor sends a CHAPS payment late, it will not clear until the next business day. This can push completion to the following day, requiring all parties in the chain to extend their removals bookings and stay arrangements.

**Solicitor error or missing paperwork.** A solicitor realising on completion morning that a form has not been signed, a redemption figure has not been obtained, or a discharge of charge is missing can delay the transfer of funds until the issue is resolved.

**Chain problems.** In a chain, if the bottom buyer's funds are delayed, no transaction in the chain can complete. The first transaction in the chain cannot release keys until it has received funds, and that holds up every subsequent transaction.

**The seller not vacating.** Legally, the seller must vacate by the contractual completion time. If they are still moving out when the buyer's solicitor calls to confirm completion, the estate agent may delay key release until the agent has confirmed the property is clear.

What Happens if Completion is Delayed?

If completion does not happen by the agreed time:

• The defaulting party's solicitor will issue (or receive) a formal notice
• The defaulting party may be liable for interest at the contract rate (typically the Bank of England base rate plus a percentage) for each day of delay
• In extreme cases, where completion does not happen by the end of the business day, both parties may need to rebook removals, arrange alternative accommodation, and negotiate who bears those costs
• If completion has not occurred within a reasonable period after exchange, the non-defaulting party can serve a **Notice to Complete**, giving the defaulting party ten working days to complete. If they still do not, the non-defaulting party can rescind the contract and claim damages

Practical Tips for Sellers on Completion Day

• Do not book a one-way flight or commit to being somewhere else on completion day
• Be aware that 2:00 pm is not a guarantee, have a contingency plan if keys are delayed
• Ensure your solicitor has the redemption figure from your lender well in advance
• Keep your phone on and be reachable all morning

How Property Passport UK Helps at Completion

Sellers who manage their transaction through Property Passport UK have all their documentation, discharge of charge confirmations, title information, and correspondence, stored in one place. This reduces the risk of completion day surprises caused by missing documents and makes it easier for your solicitor to respond quickly if a query arises at the last moment.