Completion Day for First-Time Buyers: What Happens, What to Expect, and What Comes Next (Part 5)

Part 5: Completion Day — The Final Chapter

You've saved the deposit, verified your affordability, budgeted for all costs, chosen your mortgage product, and navigated the legal process. Now comes the day that makes it real.

Completion day is simultaneously the most exciting and most administrative day of a first-time buyer's life. The legal machinery is well-established and your solicitor will guide you through it — but understanding what is actually happening, and having a plan for the hours and days that follow, makes the whole experience significantly less stressful.

This guide covers everything from the moment funds are sent to what you need to do in the first month of owning your new home.

The Legal Timeline: From Exchange to Completion

Exchange and completion are two separate legal events, often confused by first-time buyers.

Exchange of contracts

Exchange is when the signed contracts are swapped between your solicitor and the seller's solicitor. At this moment:

• You are legally bound to complete the purchase
• The seller is legally bound to sell to you at the agreed price
• Your deposit (typically 10%) is transferred to the seller's solicitor and held until completion
• A completion date is legally fixed in the contract
• Buildings insurance must be in force from this moment — if the property is damaged between exchange and completion, you as the buyer bear the risk

If you pull out after exchange without grounds in the contract, you lose your deposit (10% of the purchase price). If the seller pulls out after exchange, they are liable for your deposit and potentially additional damages.

Completion

Completion typically occurs 1–4 weeks after exchange. On completion day, your solicitor:

1. Draws down the mortgage advance from your lender — this is the formal request for the mortgage funds. Lenders require several business days' notice (usually 3–5 working days), so your solicitor will have requested the drawdown earlier in the week.
2. Combines mortgage advance with your deposit already held from exchange.
3. Sends the full purchase price to the seller's solicitor via CHAPS (same-day bank transfer).
4. Receives confirmation from the seller's solicitor that funds have arrived.
5. Instructs the estate agent to release the keys to you.
6. Pays SDLT to HMRC — this must happen within 14 days of completion; your solicitor manages this automatically.
7. Submits the Land Registry application to register you as the new owner — typically takes 2–6 weeks to process.

Timeline on completion day:

Note on timing: CHAPS transfers are processed in batches. If completion funds arrive at the seller's solicitor's bank after their daily CHAPS cut-off (typically 3pm–4pm), the seller's solicitor may hold the funds until the next morning. This is rare but can push key collection to the following day — another reason why most buyers prefer a morning completion and collect keys at lunchtime.

What to Do on Completion Morning

Before you collect the keys, run through this checklist:

Before leaving home:

• Confirm with your solicitor that funds have been sent
• Have your solicitor's emergency contact number in your phone
• Have the estate agent's number for key collection
• Bring photo ID
• Have your buildings insurance policy number handy

When you collect the keys:

• Count all keys — front door, back door, garage, post box, window locks
• Confirm any fobs (parking, communal areas for flats)
• Get the estate agent's confirmation in writing (even a text message) that completion has occurred

At the property — do this before you unpack anything:

1. Meter readings — take photos of gas, electricity and water meters with timestamps. Share these immediately with your energy supplier and the incoming supplier if you're switching. These readings determine what you owe versus what the previous owner owes.
2. Check fixtures and fittings — compare against the F&F form signed at exchange. If something agreed to remain has been removed, contact your solicitor immediately — before completion is finalised from a practical standpoint (keys just released).
3. Check the boiler — turn it on, check it produces hot water and heat. Note the boiler make and model.
4. Check all window locks and identify which keys operate them.
5. Photograph any existing damage to walls, floors, doors — creates a record that it was pre-existing.
6. Locate the stopcock (water mains shutoff) and the consumer unit (fuse box) — you'll want to know where these are before you need them urgently.
7. Check alarm panel — get the code from the estate agent or seller's notes.

Your 10-Item First Week Admin Checklist

The excitement of collecting keys quickly gives way to an administrative mountain. Work through this checklist in the first week:

1. Update the electoral roll

Register your new address at gov.uk/register-to-vote. This matters for your credit file — electoral roll registration is one of the fastest ways to build credit history at a new address. Do this within 48 hours.

2. Notify HMRC

If you are employed (PAYE), HMRC needs your new address for tax code correspondence. Update via your Personal Tax Account at gov.uk/personal-tax-account. If self-employed, update your Self Assessment return details.

3. Notify DWP (if applicable)

If you receive Universal Credit, Housing Benefit, Child Benefit, State Pension or any other DWP benefit, update your address immediately via your online account or by calling the relevant helpline. Address discrepancies can cause payment delays.

4. Set up utilities

Your energy supplier should have been notified automatically if the previous owners had an account with a major supplier — but confirm this by calling. Provide the meter readings from completion day. If you want to switch suppliers (highly recommended — loyalty tariffs are rarely competitive), use the meter readings as your "leaving" reads and switch via a comparison site. Under Ofgem rules, switches complete within 5 working days.

5. Register for council tax

Contact your local council immediately to register for council tax at the new address. Council tax is not automatic — you must register. Failure to do so can result in backdated bills. Use your completion date as the date you became liable. Check whether you qualify for any discounts:

• Single occupancy: 25% discount
• Full-time student: full exemption in many cases
• Low income: Council Tax Reduction scheme (means-tested)

Find your council via gov.uk/find-local-council.

6. Confirm buildings insurance

Your buildings insurance should already be active from exchange. Log into your policy, update the start date if needed, and confirm the new address is correctly recorded. Ensure the "sum insured" (the rebuild value, not the market value) is adequate — your mortgage lender will specify a minimum as a condition of the loan.

7. Sort contents insurance

If not already in place, arrange contents insurance before your furniture and belongings arrive. A furnished two-bedroom home typically has £20,000–£40,000 in contents. Even a single water leak can destroy carpets, furniture and electronics worth thousands.

8. Redirect your post

Royal Mail's redirection service costs approximately £33.99 for 3 months (2026 rates) and is non-optional if you want to capture mail from subscriptions, financial institutions and DVLA. Set it up at royalmail.com/personal/receiving-mail/redirection. Also update directly: bank accounts, DVLA (driving licence), HMRC, pension provider, employer, DVSA, GP, dentist, and any subscription services.

9. Broadband and TV licence

Contact your existing broadband provider about moving your service — most offer a transfer. If switching provider, allow 2–4 weeks for installation of new lines (Openreach slots book up quickly in some areas). Apply for a TV licence at the new address immediately if you will watch live TV or use BBC iPlayer (tvlicensing.co.uk).

10. Change locks

Consider having the front door lock changed within the first week. You don't know how many copies of the key exist — previous owners, their family, tradespeople, neighbours. A new cylinder costs £30–£80 from a locksmith and takes 30 minutes.

Your First Mortgage Payment

Your first mortgage payment timing can surprise first-time buyers.

How it works: your lender sets up a direct debit from your bank account. Most lenders collect on a fixed date — usually the 1st or the 15th of the month. If you complete part-way through a month, your lender calculates "interest in advance" for the remaining days of the completion month, then begins regular monthly collections from the following payment date.

Worked example:

Completion date: 20 June 2026 Monthly mortgage payment: £1,232 (£220,000 at 4.72% over 25 years) Daily interest rate: 4.72% ÷ 365 = 0.01293% Interest for 11 remaining days in June: £220,000 × 0.01293% × 11 = £313

The lender typically collects £313 in a lump on or shortly after completion day, then:

• July 2026 payment: £1,232 (first full monthly payment)
• August onwards: £1,232 per month

In practice, many lenders add the stub interest to the first full payment and collect everything from the July date. Your completion pack from the lender will itemise exactly what you'll pay and when. Read it carefully and check your direct debit confirmation.

Managing Your Mortgage from Day One

Set up a mortgage account login

Most lenders provide an online portal where you can view your balance, transaction history, remaining term, and make overpayments. Set this up in the first week. Note your 10% annual overpayment allowance — in most cases, this resets on the anniversary of your mortgage start date, not the calendar year.

Understanding your mortgage statement

Your annual mortgage statement shows:

• Opening balance (start of year)
• Total payments made
• Capital repaid
• Interest charged
• Closing balance

In the early years of a repayment mortgage, the majority of each payment goes toward interest. On a £220,000 mortgage at 4.72%:

The slow initial pace of capital repayment is entirely normal for a repayment mortgage. By year 25, the balance reaches zero and the mortgage is discharged.

Start your overpayment strategy early

As outlined in Part 4, even modest overpayments in the early years have a disproportionate impact on total interest. If you can afford £50–£100/month extra from month one, your long-term interest saving is significant.

Set up the overpayment as a standing order to your mortgage account — separate from the direct debit — so it happens automatically. Review it annually when your mortgage statement arrives.

Remortgaging: mark the diary now

Your initial deal period will end. For a 2-year fix taken in mid-2026, that is mid-2028. For a 5-year fix, mid-2031. At the end of the deal, your mortgage automatically reverts to the SVR (typically 7.5%–8.0%) — which you never want to pay.

Set a calendar reminder 6 months before your deal ends. Start comparing rates at that point — you can lock in a new product up to 6 months before the switch date with no ERC on the outgoing product. Your existing lender will usually contact you, but don't wait for them — shop the whole market via a broker.

Snagging: New Builds vs Resale Properties

New-build snagging

If you've bought a new-build home, snagging is the process of identifying defects in the developer's finish before and shortly after you move in. Common issues:

• Gaps in skirting boards or door frames
• Doors and windows that don't close properly
• Paintwork runs or missed areas
• Scratched glass or tiles
• Appliances not functioning correctly
• Drainage issues (blockages in new soil stacks)

Your rights:

• NHBC Buildmark warranty (or equivalent — Premier Guarantee, LABC): provides 2-year developer defects cover and 10-year structural defects cover from legal completion
• The developer must rectify defects reported in writing within the 2-year defects period — document everything, send issues in writing (email is fine), keep a log
• The Consumer Code for Home Builders gives you additional rights, including access to an independent dispute resolution service if the developer is unresponsive

Use a professional snagging inspector before completion if possible (the developer must allow access under most NHBC schemes). Budget £300–£500 for this. A typical new-build snagging report identifies 50–200 items — most are minor but some may be significant.

Resale property issues

There is no equivalent warranty for resale properties. Defects found after completion are generally yours to deal with, unless you can demonstrate misrepresentation on the property information forms (TA6 and TA7) the seller completed. This is why a Level 2 or Level 3 survey before exchange (Part 3 of this series) is so important — it is your main line of protection.

The Emergency Fund: Non-Negotiable

Homeownership brings a category of unexpected expenditure that renting does not: boiler failures, roof repairs, blocked drains, white goods replacements, fence damage after a storm. These do not wait for a convenient moment.

Financial advisers typically recommend maintaining 3–6 months of expenses as a general emergency fund. For homeowners, the recommendation shifts to specifically maintaining £3,000–£5,000 earmarked for home emergencies, on top of your general savings buffer.

Why £3,000–£5,000:

• Boiler replacement (if beyond repair): £2,500–£4,000
• Emergency roof repair: £500–£2,000
• Broken pipe and water damage: £500–£3,000
• Appliance replacement (washing machine, fridge): £400–£900

In the first year, you may have depleted savings to cover purchase costs. Rebuilding the emergency fund to £3,000–£5,000 should be a financial priority in year one — ideally before you start aggressive mortgage overpayments.

A Cash ISA or easy-access savings account (not your LISA, which has the 25% withdrawal penalty) is the right vehicle for this fund. In 2026, easy-access savings rates are paying 4.0%–4.5% AER — your emergency fund earns competitive interest while remaining instantly accessible.

You're a Homeowner: What the Series Covered

This is the final instalment of "Buying Your First Home." Over five parts, we've covered:

• Part 1: Saving the deposit — how long it really takes, LISA, regional variation, shared ownership
• Part 2: Mortgage affordability — income multiples, stress tests, self-employed applications, how to maximise what you can borrow
• Part 3: Stamp duty and all buying costs — the true total cash required, with worked examples at £275k and £450k
• Part 4: Choosing your mortgage deal — fixed vs tracker, 2-year vs 5-year, arrangement fees, overpayment strategy
• Part 5: Completion day — what happens, the admin checklist, first mortgage payment, managing your new home

Owning your first home is genuinely one of the most significant financial milestones in adult life. The process is long, paperwork-heavy and occasionally stressful. But it is navigable — and the financial outcome, for buyers who enter with realistic expectations and sound preparation, is one of the most impactful decisions most people make.

Good luck.

Sources

• HM Land Registry: Registration process and timelines
• HMRC: SDLT — when and how to pay
• gov.uk: Register to vote
• gov.uk: Find your local council — council tax registration
• Ofgem: Switching energy suppliers — rules and timeline
• NHBC: Buildmark warranty for new-build homes
• Consumer Code for Home Builders: Homebuyer rights
• TV Licensing: Register at new address
• Royal Mail: Post redirection service