Completion day is when the money moves and the keys change hands. It is also the day buyers understand least, because everything important happens between solicitors and banks while you sit by the phone. Here is exactly what happens, in order, who does what — and why the keys so often arrive at 2pm rather than 9am.
What “completion” actually means
Completion is the legal moment the property becomes yours: the balance of the purchase money arrives with the seller's solicitor, and in exchange the seller's side confirms completion, authorises key release, and hands over the signed transfer deed. Until that money lands, the house is still the seller's. After it lands, it is yours — including the boiler, the roof, and everything the seller left in the loft.
Completion is distinct from exchange of contracts, which usually happens days or weeks earlier. Exchange is the point of no return — both sides are legally committed, your deposit is at risk if you withdraw, and the completion date is fixed in the contract. Completion is the delivery of what was promised at exchange. (If you have not exchanged yet, our pre-exchange checklist covers what needs confirming first.)
The day before: where the money gets staged
Almost everything that makes completion day smooth happens the day before:
- Your solicitor requests the mortgage advance from your lender, timed to arrive in the solicitor's client account the day before completion or first thing on the day. Lenders typically need several working days' notice — this was arranged well in advance.
- Your cash contribution is already with your solicitor — the deposit balance and fees, sent in cleared funds. Solicitors will not complete on the promise of a transfer; the money must be sitting in their account.
- The completion statement is agreed: the exact figure that must move, including apportionments (for a leasehold flat, for example, service charge the seller has prepaid past the completion date).
- You confirm the practical arrangements: which agent's office holds the keys, and that your buildings insurance is in force (for most freehold purchases, your insurance must run from exchange, not completion — check your policy start date).
The morning of completion: the money chain
From roughly 9am, solicitors' offices begin sending completion funds by CHAPS — the same-day guaranteed bank transfer system. Your solicitor sends the full balance to the seller's solicitor. When it arrives, the seller's solicitor:
- Confirms completion to all parties,
- Pays off the seller's outstanding mortgage from the proceeds (called redemption),
- Telephones the estate agent to authorise key release, and
- Sends the signed transfer deed (TR1) to your solicitor, who will register you as owner at HM Land Registry in the following weeks.
Only after that phone call will the agent hand you the keys. Agents are strict about this for good reason: releasing keys before completion means letting someone move into a house they do not yet own.
Why the keys arrive at 2pm and not 9am
If you are in a chain, the money moves sequentially. The first-time buyer at the bottom sends funds to their seller's solicitor; once that completion is confirmed, that seller (who is also a buyer) sends their funds up to the next rung; and so on to the top. Each link involves a bank transfer that can take minutes or a couple of hours, plus a solicitor confirming receipt and making calls. Three or four links, each taking an hour or so, is how a process that starts at 9am delivers your keys mid-afternoon.
Most contracts require completion by a set time — commonly 1pm or 2pm. If the money arrives after the contractual deadline, completion technically rolls to the next working day, and the buyer can be liable for a day's interest under the contract. In practice, funds that arrive at 2:30pm usually still complete that day by agreement — but it is why solicitors push everyone to send money early, and why Fridays (everyone's favourite moving day) are the riskiest day of the week to complete: if anything fails, you wait until Monday, possibly with your belongings in a van.
What can go wrong — and what happens if it does
- A delayed transfer somewhere in the chain: The most common problem. Usually resolved the same day; occasionally rolls to the next working day with interest payable by whoever caused the delay.
- A lender releasing funds late: Why good solicitors request the advance for the day before.
- The seller not having moved out: The contract requires vacant possession on completion. If the van is still being loaded at 3pm, that is a nuisance; if the seller has not left at all, that is a breach — your solicitor serves notice and the seller pays the costs. Genuinely rare.
- Failure to complete: The serious case — usually a buyer whose funds fell through after exchange. The other side serves a notice to complete, giving ten working days; a buyer who still cannot complete forfeits the 10% exchange deposit. This is rare precisely because exchange made everyone certain of their funding first.
Your actual to-do list for the day
- Be reachable from 9am — solicitor and agent will call you, and occasionally need something from you.
- Do not book removals against a 9am key handover. Mid-to-late morning is realistic at the bottom of a chain; early afternoon in the middle of one. Loading the van in the morning and driving to the new house when the agent calls is the pattern that works.
- At handover, get every key: windows, garage, shed, meter boxes. Ask the agent what has been left with them.
- Photograph the meters (gas, electricity, water) the moment you walk in, and give the readings to the suppliers — this is the boundary between the seller's bills and yours.
- Test the essentials before the van is unloaded: stopcock location, boiler firing, hot water running. Problems found in the first hour are easier to raise than problems found after a week.
After completion, your solicitor handles the admin tail: paying your stamp duty to HMRC, registering the transfer at the Land Registry (this can take weeks or months to process — normal, and you are fully the owner in the meantime), and sending you the final paperwork. Your job is done. The house is yours.