How long is a mortgage offer valid for?

A mortgage offer is a major step in the mortgage process. It means the lender has assessed your application, reviewed the property and confirmed the mortgage they are prepared to offer.
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Many UK mortgage offers last three to six months, but each mortgage lender sets its own deadline. Some lenders provide longer periods for new-build purchases. Therefore, always check the expiry date shown in your offer.

A mortgage offer confirms that the lender has checked and approved your full mortgage application. It may also list conditions you must meet before completion. You must usually complete the purchase or remortgage before the offer ends.

If you expect a delay, contact your mortgage adviser or lender several weeks before the offer ends. The lender may then ask for new details before agreeing to an extension.


A common range is three to six months

Some lenders provide longer periods, particularly for new-build purchases.

Your offer gives the exact deadline

Use the expiry date shown in the document rather than estimating it yourself.

Ask about an extension early

Contact your adviser or lender several weeks before expiry. The lender does not have to approve an extension.

Prepare for updated checks

The lender may review your income, credit report and property valuation before extending the offer.


Keep your mortgage offer on track

What does a mortgage offer mean?

Before issuing an offer, the lender reviews your full application and proof of income. It also checks your credit report and the property valuation.

If approved, the offer sets out:

  • The mortgage amount and property details
  • The interest rate, term and monthly payments
  • Product fees and early repayment charges
  • Any conditions you must meet
  • The offer expiry date

Once you receive your mortgage offer, the mortgage process is not yet complete. Your solicitor or conveyancer must complete the legal work before the lender releases the funds.

How long does a mortgage offer last?

Many mortgage offers remain valid for three to six months. However, some lenders provide longer periods for new-build purchases. Your offer confirms the exact expiry date.

Lenders also use different start dates. For example, some count from the application, others count from the property valuation or offer date. Therefore, always use the date shown in your document.

For a purchase, the lender must usually send the funds before expiry. By comparison, a new remortgage must start before the offer ends.

For example, an offer ending on 30 November may not cover completion on 1 December. Exchanging contracts earlier does not change the expiry date.

Also, tell your broker or lender if your job, income, borrowing or property details change. The lender will then check whether the offer remains valid.

If completion misses the deadline, your original rate, fees and loan amount may change.

Bad credit mortgage? See what may still be possible

Is your mortgage offer running out?

Muttuo can help you review the deadline, extension rules and next steps.

Can you extend a mortgage offer?

If a delay pushes completion beyond the expiry date, some lenders may extend your offer. However, each lender decides whether to approve the request.

To allow time for a decision, ask for a mortgage offer extension in writing several weeks before the offer ends. Explain the delay and give the new completion date. Your conveyancer or developer may need to confirm the date.

If approved, an extension may last between one and six months. But, the exact length depends on the lender, deal and property.

As part of its review, the lender may ask for recent payslips, bank statements, another credit check or a new valuation. It may also check whether your income, job or borrowing has changed.

The lender may extend your original rate and terms. Otherwise, you may need a new deal or have to reapply.

What happens if your mortgage offer expires before completion?

Once your offer expires, the lender will not normally release the funds. Your purchase or remortgage cannot complete until the lender approves an extension, a new offer or another application.

Therefore, contact your broker or lender as soon as possible. Ask which options remain and what checks they need to repeat.

If you reapply, the lender will use its current interest rates and lending rules. As a result, your interest rate, fees and loan amount may change.

Also, tell your solicitor or conveyancer about the expired offer as soon as possible. If the delay affects a property chain, update your estate agent too.

Contact your solicitor urgently if you have exchanged contracts or concluded missives in Scotland. Missing a binding completion date could lead to extra costs or penalties.

New-build mortgage offer deadlines

New-build purchases can take longer while the developer finishes the home. For this reason, some lenders issue nine-month new-build offers and may add a further three months. Other lenders set different rules and do not allow extensions.

Compare the offer expiry date with the latest completion date given by the developer. Then ask your conveyancer whether the contract includes a long-stop date. A long-stop date is the final deadline set in the contract.

Also, tell your broker or lender if the build date, price, incentives or property details change. The lender may then check your application and valuation again.

Mortgage offer or Agreement in Principle?

An Agreement in Principle (AIP) and a mortgage offer have different purposes. Some lenders call an AIP a mortgage in principle.

Agreement in Principle

An early estimate of how much a lender might offer. The lender uses your initial financial information, so an AIP does not guarantee approval.

Mortgage offer

The lender issues a formal offer after reviewing your full application and the property. It confirms the amount, rate, term, conditions and expiry date.

An AIP can help you plan your budget when buying a property. However, the lender needs to issue a full mortgage offer before releasing the funds.

How long does it take to get a mortgage?

A lender often issues a mortgage offer within two to four weeks of receiving your full application. But, missing documents, income questions or property valuation problems can cause delays.

When applying for a mortgage, send your ID, bank statements and proof of income promptly.

The two-to-four-week estimate only covers the application to offer stage. It does not include legal work. Once the lender issues the offer, legal checks, a property chain or a new-build timetable may add several weeks or months.

How to avoid mortgage offer expiry

01 Check the expiry date

Make note of the date and set a reminder several weeks beforehand.

02 Share the date

Tell your broker, conveyancer and estate agent when the offer ends.

03 Reply quickly

Send documents and answer lender or legal questions as soon as you can.

04 Track completion

Compare the latest completion date with the offer expiry date. Check often if you are in a property chain or buying a new build.

05 Ask early

Speak to your broker or lender if completion may be late. Acting early gives you more time to review your options.

How Muttuo Mortgages can help

A delayed purchase or remortgage can put your mortgage offer at risk. Our brokers can help you understand the deadline, your financial situation and decide what to do next.

Muttuo Mortgages can help you:

review the expiry date against your expected completion timeline

check whether the lender may consider an extension

prepare for any updated documents or lender checks

compare options across over 100 lenders if you need a new application

Acting early can give you more time to protect your mortgage position and avoid unnecessary delays.

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