What Happens at Mortgage Completion Day?

Completion day is when the property legally becomes yours. The mortgage funds release, the purchase money flows to the seller, and you collect the keys. After weeks or months of waiting, it can feel anticlimactic — a few hours of bank transfers and a phone call from the estate agent. Here's what actually happens, hour by hour.

Completion comes after exchange of contracts, the legally binding moment a few days or weeks earlier. If you're remortgaging rather than buying, the process is simpler — see how to remortgage your home.

The day before

You should have already:

• Transferred any cash balance owed to your conveyancer (their completion statement tells you exactly how much, sent ~5 days before)
• Confirmed your buildings insurance starts on completion day
• Booked removals
• Drained the kitchen of perishables at the old place
• Read meter readings at your old property

On the morning of completion

8:00–10:00 — funds released

Your mortgage lender releases the loan funds to your conveyancer's client account. This usually arrives via CHAPS in under an hour. Your conveyancer adds your cash deposit to make up the full purchase amount.

10:00–13:00 — money moves up the chain

If you're in a chain (your seller is buying somewhere else), the money has to flow through every link before keys can be released anywhere. Your conveyancer sends the purchase price to the seller's conveyancer. The seller's conveyancer uses it as their buyer's funds and sends it onward. And so on, until the top of the chain (someone with no onward purchase) receives the final amount.

CHAPS transfers are same-day but each conveyancer's bank may take 1–2 hours to process. A 4-link chain can take 2–4 hours of cumulative transfers.

When the bottom of the chain confirms receipt

The seller's conveyancer phones the estate agent to authorise key release. The agent then phones you.

Key collection

You go to the estate agent's office (or the property if previously arranged) and collect the keys. You cannot enter the property until this call confirms keys can be released.

Typical completion timing

Typical key release time: 1pm to 4pm. Some non-chain completions complete by 11am. Some long chains drag past 5pm.

Why completion sometimes slips past 5pm

• Slow CHAPS at one of the chain's banks
• Mistake on a transfer (wrong sort code, slightly wrong amount)
• Disputed final amount (e.g. fixtures and fittings dispute)
• Bank processing delays (Mondays and Fridays often busiest)
• One conveyancer not at their desk to process the inbound

If completion doesn't happen by close of business (5pm), it slips to the next working day. Removals can charge you for a wasted day. Plan removals for the day after completion if possible, especially in a chain.

What you do on the day

• Confirm with your conveyancer (~9am) that funds have released
• Stay reachable — phone on, not in meetings
• Pack the rest of your stuff
• Take final meter readings at the old place
• Notify the council (council tax)
• Notify utilities of the move
• Set up Royal Mail forwarding

When the agent calls:

• Collect keys
• Walk the property — confirm everything agreed is included
• Take photos of the meter readings at the new place
• Take photos of any defects that weren't there at viewing

What your conveyancer does after completion

Within days/weeks of completion:

• Pays the stamp duty to HMRC (within 14 days — they'll have requested funds from you in the completion statement). For first-time buyers, the calculation follows the UK stamp duty FTB thresholds.
• Registers the transfer of ownership at the Land Registry (4–8 weeks)
• Sends you the final completion documents
• Files away the deeds

What the lender does after completion

• Sets up your direct debit
• Sends a "welcome pack" with mortgage account details
• Confirms the date and amount of your first payment

Your first mortgage payment is usually 4–6 weeks after completion, and it's usually slightly higher than your standard monthly payment because it includes interest from completion day to the first regular payment date.

What happens if completion doesn't happen on the agreed date?

Once contracts are exchanged, the completion date is legally binding. If the seller can't complete on the agreed date, they're in breach of contract. You're entitled to:

• Daily interest at the contractual rate (often 4% above base, set in the contract)
• Compensation for additional costs (removals, hotel)
• Right to rescind if delay exceeds 10 working days

If you can't complete (e.g. mortgage funds not released), the same penalties apply against you. This is rare but devastating — your conveyancer should be on top of every funding step.

Things to do in the first week

• Test smoke alarms
• Locate stop tap and main fuse box
• Check the boiler is working
• Read the EPC and check insulation
• Take meter readings and submit to utilities
• Register for council tax
• Update address with all banks, employer, DVLA, electoral roll
• Update home insurance to your full long-term policy

Things to do in the first month

• Get a survey of any concerns flagged at the homebuyer's report
• Get gas safety check (if not done)
• Change locks if you're not 100% sure all old keys are accounted for
• Familiarise yourself with the boundary, drains, and any easements

Get a free mortgage quote — many brokers also help with completion-day project management.

Frequently asked questions

What time on completion day will I get the keys? Typically 1pm to 4pm. Sometimes earlier if non-chain, sometimes later in a chain.

Can I move in the day before completion? No — you have no legal right to be on the property before completion.

What if the seller hasn't moved out? Their conveyancer must confirm vacant possession before completion. If they haven't moved out, completion shouldn't happen — this is a breach.

Do I need to be at the property when keys are released? Yes, or someone authorised on your behalf. The agent will not release to anyone unauthorised.

Can completion happen on a Saturday? Almost never — banks don't process CHAPS on weekends. Friday or Monday completions are most common.

What if the survey flagged something the seller hasn't fixed? You should have negotiated either fix or price reduction before exchange. After exchange, you have very limited recourse.

This article is for informational purposes only and does not constitute financial or legal advice. Always consult a qualified mortgage adviser and conveyancer.