When you’re applying for a mortgage, getting your mortgage offer is a big moment. It means the lender has reviewed your application, checked your finances, and agreed in principle to lend you the money you need to buy your home.
In this blog, we’ll cover:
- How long mortgage offers typically last in the UK
- What affects the offer period
- What happens if your offer expires
- Whether you can extend or reapply
- How to avoid common delays
What Is a Mortgage Offer?
A mortgage offer is a formal agreement from a lender confirming how much they’re willing to lend you, based on a full assessment of your financial situation and the property you intend to buy.
It follows several steps:
- A full mortgage application
- A property valuation (usually arranged by the lender)
- Full underwriting checks, including employment and credit history
- Offer issued in writing, detailing terms, loan amount, interest rate, and conditions
- Once you have this offer, you’re ready to proceed with exchanging contracts and completing the purchase.
How Long Does a Mortgage Offer Last in the UK?
Most mortgage offers in the UK are valid for 3 to 6 months, depending on the lender.
Here’s a general guideline:
Lender Type Typical Offer Duration
High street banks 3–6 months
Building societies 3–6 months
Specialist lenders 2–4 months
Some lenders will also include an exact expiry date on your mortgage offer letter—so always check the documentation carefully.
Why Do Mortgage Offers Have Expiry Dates?
Mortgage offers aren’t set in stone forever. Lenders need to limit their exposure to risk. The market can change, interest rates can rise, your personal finances could shift, or the property might lose value.
An expiry date ensures:
- Your financial situation is still accurate
- The property valuation remains relevant
- Regulatory rules are up to date
If your situation changes significantly, the lender may need to reassess your eligibility—even before the offer expires.
Can I Extend a Mortgage Offer?
Yes, many lenders do allow extensions, but it’s not automatic. You’ll usually need to request this before your original offer expires.
What’s required?
- A reason for the delay (e.g. solicitor hold-ups, chain issues)
- Updated documents (payslips, bank statements)
- Possibly a revaluation of the property
Extensions are usually granted in 30–60 day increments, but each lender’s policy is different. If your offer is near expiry, speak to your mortgage adviser or broker as early as possible.
What Happens if My Mortgage Offer Expires?
If your mortgage offer expires before you complete your purchase, it’s likely that you’ll need to:
- Reapply for the mortgage – This means submitting a new application.
- Provide up-to-date documents – Including payslips, proof of deposit, and ID.
- Get a new property valuation – Especially if the original is more than 6 months old.
- Be reassessed under current lending criteria – If rates have changed, you may be offered a different deal.
This can lead to delays and in some cases, you might no longer qualify for the same mortgage product, especially if your financial situation has changed.
Can Anything Invalidate a Mortgage Offer Before It Expires?
Yes, lenders reserve the right to withdraw or amend an offer if something significant changes before completion. This might include:
- Losing your job or major drop in income
- Taking out new debt (e.g. credit cards or loans)
- A change in property condition or valuation
- Failing final checks before exchange
It’s important not to make major financial decisions (like changing jobs or borrowing large amounts) between receiving your offer and completing your home purchase.
How to Avoid Delays or Expiry
To make sure your mortgage offer doesn’t expire before you’re ready to complete, consider these tips:
- Work with a proactive solicitor or conveyancer who can handle things efficiently
- Stay on top of paperwork and respond to requests quickly
- Keep your broker informed of any delays or changes
- Avoid big financial changes during the process
- Ask for an extension early if needed
Being prepared and communicative can make a big difference.
Do Mortgage Offers Expire for Remortgages Too?
Yes. Remortgage offers also come with expiry dates, usually between 3 and 6 months. If your current deal is ending soon, it’s best to apply for a remortgage early, around 3 to 6 months in advance to avoid paying your lender’s standard variable rate.
At UK Mortgage Centre, we’re here to help you make informed decisions about your mortgage. Our experts can guide you through the process, ensuring you find the best solution tailored to your needs. 
 
Call us on 01925 573328 
Email: hello@ukmc.co.uk 
Or book your own appointment to speak with one of our friendly advisers. 
Let us assist you in making your next move a smooth and successful one. Â
 
 
Disclaimer 
UK Mortgage Centre is a trading style of Refresh Mortgage Network Limited. Refresh Mortgage Network Limited is authorised and regulated by the Financial Conduct Authority. FRN – 826982. Registered in England & Wales: 11614569. As a mortgage is secured against your home, it could be repossessed if you do not keep up the mortgage repayments. The Financial Conduct Authority does not regulate some forms of buy-to-let mortgages. The Financial Conduct Authority does not regulate will writing and taxation and trust advice. 
