What Happens After Your Mortgage Offer: The Full UK Timeline

You worked through the application. The lender came back with a formal mortgage offer. The next question almost everyone asks is the same one. What now?

This is the stage where most of the actual waiting happens. The mortgage offer is the loan agreement. What sits between you and the keys is the legal work, the searches, the surveys, and the chain. None of it is glamorous, and most of it is out of your hands. The good news is that there is a fixed order. Once you know what each step looks like and what usually goes wrong, the wait stops feeling like silence.

What Is a Mortgage Offer, Exactly?

Once underwriting is finished and the valuation has been carried out, the lender issues a formal mortgage offer. This is the binding document that confirms how much they will lend you, on what terms, at what rate, and for how long. Both you and your solicitor receive a copy.

A mortgage offer is not the same as an agreement in principle or a decision in principle. Those are soft confirmations based on a credit search and self-declared figures. A formal offer is the lender saying yes, with paperwork. For a full breakdown of the stages before this point, see our guide on how long a mortgage application takes.

How Long Does a Mortgage Offer Last in the UK?

Most high street lenders give you six months, or 180 days, from the date the offer is issued. Specialist and non-bank lenders sometimes give you only three months. For new build purchases, where construction delays are routine, lenders often extend that window to nine or twelve months.

Remortgages are usually shorter. Three months is typical. That is because there is no chain and no construction risk, so the lender expects the switch to complete quickly.

If you run out of time, you can ask for an extension. Lenders may agree, but most will re-run credit and affordability checks before they confirm it. That means your offer can be reduced or withdrawn at that point if your circumstances have changed.

The Stages Between Offer and Completion

Once your offer is issued, the conveyancing stage takes over. This is the legal work that transfers ownership of the property to you. On average across the UK in 2026, this takes 16 to 20 weeks for a freehold, and 18 to 22 weeks for a leasehold. A no-chain freehold purchase with everything running cleanly can complete in 8 to 10 weeks.

Searches

Your solicitor orders local authority, environmental, water, and drainage searches. These flag planning restrictions, flood risk, contamination, road schemes, and anything else attached to the property. Search results typically come back in 2 to 6 weeks, though slow councils can push that out. There is no way to speed up a slow local authority.

Enquiries

Your solicitor reviews the contract pack from the seller’s solicitor, then raises enquiries. Things like missing certificates for past building work, leasehold service charges, planning conditions, or boundary disputes. Each enquiry then goes back to the seller’s side and waits for a response. This stage is where most deals stall.

Survey

The lender’s valuation is separate from a survey for your own benefit. A standard valuation is to confirm the property is worth what you are paying. A homebuyer report or a full building survey is for you. A full survey is sensible on anything older than 75 years, or on any property with obvious issues. The survey runs alongside the legal work.

Mortgage deed

Your solicitor sends you the mortgage deed to sign. This is the document that places the lender’s charge against the property. Sign it and return it promptly. Solicitors cannot exchange without it.

Exchange of Contracts

Exchange is the moment the deal becomes binding. Up until then either side can walk away. After exchange, both sides are locked in. The buyer pays the deposit, usually 10 percent of the purchase price, to their solicitor, who transfers it to the seller’s solicitor.

The exchange date and the completion date are agreed at the same time. Most chains exchange and complete on different days, anywhere from one day to several weeks apart. Some buyers ask to exchange and complete on the same day to avoid a gap. This works for a no-chain purchase but is rarely workable in a long chain.

Completion Day

On completion day, your solicitor sends the full purchase price (your deposit plus the mortgage funds) to the seller’s solicitor. Once received, the property is legally yours. The estate agent releases the keys.

Completion usually happens late morning or early afternoon. If your funds arrive after 3pm, completion can roll into the next working day. Aim for a Tuesday, Wednesday, or Thursday completion rather than a Friday, where bank cut-offs can cause delays.

What Slows Things Down Between Offer and Completion

The honest answer is that the mortgage offer itself is rarely the bottleneck. By the time you have your offer, the lender has done most of its work. What slows the next stage down is almost always one of these:

• Slow local authority search returns
• A long property chain with one buyer or seller who is dragging their feet
• Leasehold enquiries that take weeks for the managing agent to respond to
• Missing paperwork on past building work, such as loft conversions, extensions, or replacement windows without FENSA certificates
• A new build site that is not yet ready for handover
• Indemnity insurance disputes
• A lender re-running affordability checks before completion

If your purchase looks like it might overrun your offer validity period, tell your broker early. The earlier the lender knows, the more options you have.

Can a Mortgage Offer Be Withdrawn After It Is Issued?

Yes. This is the part lenders do not advertise. Most modern mortgage offers contain a clause allowing the lender to reassess affordability, credit, or valuation right up to completion. They use this rarely, but they use it.

Common triggers include:

• A change of job, especially from employed to self-employed
• A new credit commitment, including a car finance agreement or a buy now pay later balance
• A missed payment on an existing debt
• A drop in income through sick leave, redundancy, or business income falling
• A change to the property, such as a downvaluation on a re-inspection

The rule is simple. Between offer and completion, change nothing about your financial life. No new credit. No job moves. No large unexplained transactions.

How to Speed Up Completion After Your Mortgage Offer

You cannot speed up the slow parts. You can stop being the bottleneck yourself.

• Return signed documents to your solicitor the same day they arrive
• Pay searches as soon as the invoice is issued
• Have your deposit funds in your solicitor’s client account weeks before exchange
• Keep your buildings insurance ready to start on the exchange date
• Reply to your solicitor by email, not phone messages that get lost
• Chase your solicitor weekly for an update, not daily

A solicitor who works for a high-volume conveyancing firm is the most common cause of slow updates. If you can choose, use a solicitor your broker has worked with before. Most good brokers maintain a short list of firms that actually pick up the phone.

Special Cases

New Builds

Offers run for nine to twelve months because builds slip. If the developer misses your long stop date and your offer expires, you may need to re-apply. That is a fresh credit check and a fresh affordability assessment, often at a higher rate than the one you were promised.

Remortgages

A remortgage has no chain, no searches in the same depth, and no estate agent. Your solicitor still handles the legal work but the timeline is short. Most remortgages complete within 4 to 8 weeks of the offer. Aim to start the process six months before your fixed rate ends to leave room for any delays. If you are weighing up your options, our guide on product transfer vs remortgage explains when each route makes sense.

Buy-to-Let

Buy-to-let purchases follow the same legal process as a residential purchase, plus additional checks if you are buying through a limited company. The lender’s solicitor may run their own searches, which doubles up the work. Allow 2 to 3 extra weeks compared to a residential purchase.

Frequently Asked Questions

How long after a mortgage offer is completion?

For a residential purchase, expect 8 to 22 weeks depending on whether you are in a chain and whether the property is freehold or leasehold. For a remortgage, expect 4 to 8 weeks.

Can I change lender after a mortgage offer has been issued?

You can. There is no penalty for not proceeding with a mortgage offer. The issue is time. Switching lender means a new application, a new valuation, and new searches. If your sale or purchase is moving, this usually loses you the deal.

What happens if my mortgage offer expires before completion?

Speak to your broker or lender immediately. Most lenders will consider a short extension. They will re-run affordability and credit checks. If anything material has changed, your offer terms may also change.

Can I move into the property between exchange and completion?

No. Legal ownership only transfers at completion. Some sellers will agree to a licence to occupy, but most do not, and lenders rarely allow it.

Do I need to tell my lender if I change jobs after my mortgage offer?

Yes. The offer is conditional. A job change, especially to self-employment or a probation period, can trigger a withdrawal. Tell your broker first, then make a decision together about what to do next.

How long do mortgage funds take to release on completion?

Your solicitor requests funds from the lender 2 to 5 working days before completion. On the day, the funds are sent by CHAPS to the seller’s solicitor, usually arriving within a few hours.

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