Key stages of property completion: your UK guide

What are the key stages of property completion?

Property completion is the legal moment when ownership transfers from seller to buyer, triggered by the receipt of funds and the release of keys. It is the final act in the conveyancing process, following exchange of contracts, and once it happens the sale is legally binding and irreversible.

The property completion process moves through four broad phases:

• Pre-completion preparation: your solicitor issues a completion statement, verifies funds, and confirms mortgage drawdown with your lender
• Exchange of contracts: both parties sign and swap contracts, fixing the completion date as a contractual obligation
• Completion day procedures: funds transfer via CHAPS, seller vacates, keys are released on solicitor confirmation
• Post-completion formalities: your solicitor files the Stamp Duty Land Tax return with HMRC and applies to HM Land Registry to register the new title

Completion typically occurs between midday and 2pm, though chains can push this later. Solicitors, estate agents, and mortgage lenders all play active roles throughout. The buyer's solicitor carries the heaviest legal burden, coordinating funds, tax filings, and registration. For a clear picture of how long conveyancing takes from instruction to completion, the timeline varies considerably depending on chain length and mortgage complexity.

What buyers must do on completion day

Completion day is not a passive experience for buyers. Several legal and financial obligations fall directly on you, and missing any of them can delay possession or create legal complications.

• Transfer the balance of purchase funds to your solicitor before the agreed time, including any mortgage monies your lender releases that morning
• Arrange buildings insurance to begin on completion day, not after you collect the keys
• Wait for your solicitor's confirmation before collecting keys; buyers cannot take possession until the seller's solicitor confirms receipt of funds
• Contact utility providers to set up accounts at your new address, ready to switch over on the day
• Coordinate removal services with realistic timing, since most completions happen between midday and 2pm

SDLT deadline: Your solicitor must pay Stamp Duty Land Tax to HMRC within 14 days of completion. Missing this statutory deadline triggers financial penalties. Your solicitor handles the filing, but the funds must be available from you in advance.

On the morning of completion, your lender draws down the mortgage advance and your solicitor combines it with any deposit already held, then sends the full sum to the seller's solicitor via CHAPS payment, which can take several hours to clear. Plan your day around a midday or early afternoon key collection, not a 9am arrival. After completion, your solicitor applies to HM Land Registry to register the title transfer, a process that can take 2–6 weeks for straightforward transactions. During that window you are the beneficial owner, with full legal rights to occupy the property.

What sellers must do to ensure a smooth completion

Sellers carry clear contractual duties on completion day, and failing to meet them can hold up the entire chain.

• Vacate the property by 1pm unless a different time was agreed in writing at exchange
• Leave the property in the condition it was in at exchange, with all agreed fixtures and fittings intact as listed in the TA10 form
• Hand over all keys and access codes, including front door, back door, garage, and window locks, to your solicitor or estate agent
• Confirm with your solicitor that funds have been received before authorising key release
• Brief your removal company on realistic timing so they are not blocking access before the transaction is confirmed

Pro Tip: Prepare a completion day checklist the evening before. Take meter readings, do a final walkthrough of every room, and photograph the property's condition. This protects you if any dispute arises over what was left or removed.

One risk sellers underestimate is vacating before their solicitor confirms receipt of funds. Until that confirmation arrives, you remain legally entitled to occupy the property. Handing over keys prematurely, before the money has cleared, creates a legal grey area that can be difficult to resolve quickly.

How your conveyancing solicitor manages the completion process

Your solicitor does far more on completion day than send a single bank transfer. The coordination required behind the scenes is considerable, and the quality of that coordination directly affects how smoothly your transaction proceeds.

• Issue a completion statement in advance, detailing the exact funds required from you and any disbursements owed
• Request the mortgage drawdown from your lender, usually the day before completion under the Conveyancer Code for Completion
• Verify the seller's solicitor's bank account details before transmitting any funds, a critical fraud prevention step
• Monitor CHAPS transfer status and chase promptly if funds are not confirmed received by early afternoon
• Confirm completion to the estate agent and authorise key release once funds land
• File the SDLT return with HMRC and submit the Land Registry application post-completion

Pro Tip: Ask your solicitor whether they follow the Conveyancer Code for Completion before you instruct them. Under this code, funds are transmitted the working day before completion, which significantly reduces the risk of bank processing delays holding up your transaction.

The Conveyancer Code for Completion requires the buyer's conveyancer to collate and transmit the full completion sum to the seller's conveyancer the working day before the agreed date. The seller's conveyancer then holds those funds to the buyer's order until completion is confirmed. This approach removes the single biggest source of same-day delay: waiting for CHAPS to clear while removal vans sit outside. For a full breakdown of what your solicitor's involvement costs, see the solicitors fees guide for buyers and sellers.

Common completion day problems and how to avoid them

Most delays on completion day are predictable. Knowing where they tend to occur gives you a real advantage.

• Chain delays: completion is a cascading process where funds move up the chain from the first-time buyer at the bottom; a hold-up at any link stalls every transaction above it. In a long chain, 3pm completions are not unusual even when everyone planned for noon.
• Mortgage drawdown delays: lenders occasionally hold up the release of funds for administrative reasons. Your solicitor should escalate to the lender immediately if drawdown has not arrived by mid-morning.
• CHAPS processing time: transfers typically take 1–3 hours. Solicitors who do not use the Conveyancer Code for Completion are sending funds on the day itself, leaving little margin if anything slows.
• Removal timing: booking your removal company for early morning is a common mistake. Arrive with your van too early and you may wait several hours outside a property you cannot yet legally enter.
• Fraud risk: always verify your solicitor's bank details by telephone using a number you sourced independently, not from an email. Conveyancing fraud targets fund transfers specifically.

Pro Tip: Keep your phone charged and stay reachable throughout completion day. Your solicitor may need to reach you quickly to authorise a decision or confirm a detail. Going off-grid for even an hour can slow the process.

Once you do collect the keys, do a thorough walkthrough before the removal van is unloaded. Check that all agreed fixtures and fittings listed in the TA10 are present, test all access points, and take meter readings immediately. If anything is missing or damaged, your solicitor needs to know the same day. For buyers thinking ahead to the title registration that follows, the property title change process in England is handled entirely by your solicitor post-completion.

Get a fixed-fee quote before completion day arrives

Knowing your legal costs in advance removes one source of stress from an already busy process. Conveyancing-solicitor connects buyers and sellers with SRA- and CLC-regulated firms across the UK, with instant conveyancing quotes online and fixed fees that can save up to 75% compared with standard high-street rates. There are no hidden charges and no surprises on completion day.

Key takeaways

Property completion transfers legal ownership from seller to buyer the moment funds are received and confirmed by the seller's solicitor.

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