How Long Does It Take to Get a Mortgage Approved in the UK?

Most first-time buyers underestimate this. From "I want to buy a house" to "the keys are in my hand" usually takes 3 to 4 months — sometimes 6. The mortgage itself is part of that, but it's not the slowest part.

Here's the full breakdown.

The headline timelines

These are realistic UK averages. Faster is possible but rare. Slower is common in chains and with complex circumstances.

Mortgage in principle (15 minutes – 1 day)

A mortgage in principle (AIP) is a soft credit check and basic affordability test. Most online lenders and brokers issue one in under an hour. Slower banks can take a day.

It tells you what you can borrow but is not a binding offer. You'll need it to make offers on properties — most estate agents won't take you seriously without one. See How does a mortgage in principle work?.

Full mortgage application (2 to 6 weeks)

After your offer on a property is accepted, you submit a full mortgage application. This is the slow part on the lending side. Steps:

1. Submission (day 0) — broker or you submits the full application
2. Initial document review (1–5 days) — lender checks your payslips, statements, ID
3. Underwriter review (3–10 days) — a human assesses affordability and credit
4. Valuation (5–14 days) — surveyor visits the property (or does a desktop valuation)
5. Final underwriting decision (1–5 days)
6. Formal mortgage offer issued (1 day)

For a clean application — PAYE income, good credit, no quirks — expect 2–3 weeks. For self-employed, complex income, or unusual properties, 4–6 weeks is normal.

Why mortgage applications get slow

Common delays:

• Missing or incorrect documents. Wrong dates on payslips, missing pages of bank statements
• Income queries. Bonuses, commission, dividends often need extra verification
• Lender backlog. Some lenders' SLAs slip to 2+ weeks just to look at the application
• Property issues flagged by the valuer (cladding, lease length, non-standard construction)
• Unexpected debts uncovered in the credit check

To speed it up:

• Provide everything in the first submission. No "we'll send the bank statement later"
• Use a broker who knows which lenders are currently fast
• Avoid applying to lenders with known backlogs (your broker will know)

Legal work (4 to 12 weeks)

This is conveyancing — the legal transfer of the property. It runs in parallel with mortgage underwriting and continues after the mortgage offer is issued. Steps:

1. Instruct a conveyancer (day 0)
2. Property searches (council, drainage, environmental) — 2–4 weeks
3. Title review and enquiries with seller's solicitor — 2–6 weeks
4. Mortgage offer integrated into the legal pack — 3–7 days after offer
5. Exchange of contracts — when both sides are ready
6. Completion — typically 1–2 weeks after exchange

For a non-chain purchase (you're buying from someone who's already moved out), the legal work can wrap in 6 weeks. For a chain of 3–4, 10–14 weeks is normal.

Read What is conveyancing and how much does it cost? for what your conveyancer is actually doing during this time.

Total timeline scenarios

Fast scenario — you're a chain-free, PAYE FTB buying an empty new-build: - Day 0: AIP issued - Week 1: offer accepted - Week 4: mortgage offer - Week 6: exchange - Week 8: completion (keys)

Typical scenario — you're a FTB buying a chain-free flat from an investor: - Day 0: AIP - Week 1: offer accepted - Week 5: mortgage offer - Week 9: exchange - Week 12: completion

Slow scenario — chain of 3, complex income, leasehold flat: - Day 0: AIP - Week 2: offer accepted - Week 8: mortgage offer (multiple income queries) - Week 18: exchange (chain delays, cladding survey) - Week 20: completion

What can you do to speed things up?

• Get all documents to the broker on day 1
• Use a private conveyancer (not the lender's free legal panel), paying the £300 yourself — usually 2–3 weeks faster
• Respond to enquiries within 24 hours
• Don't change jobs or take on credit during the process
• Choose a chain-free property if speed matters

Mortgage offer expiry

A mortgage offer is typically valid for 6 months. If completion is delayed beyond that, you may have to re-apply. Some lenders will extend to 9 months on request.

If your circumstances change during this 6-month window (job change, big new debt, missed payments), the lender can withdraw the offer even before exchange. After exchange, the offer is locked in.

What if I'm rejected?

A rejection at the AIP stage usually points to credit file issues or affordability gaps. A rejection at the full application stage is more disruptive — but rare if the AIP was issued by the same lender.

Common reasons for rejection at full app:

• Bank statements show different income than claimed
• New debts taken on between AIP and full app
• Property valuation came in lower than purchase price
• Adverse credit info surfaced (CCJ, default)

Read How to improve your chances of getting a mortgage for prevention.

Get a free mortgage quote — work with a broker who tracks lender speeds in real time.

Frequently asked questions

Can I get a mortgage in 24 hours? The AIP, yes. The full mortgage offer, no — even fast lenders need 1–2 weeks for valuation alone.

What's the fastest UK mortgage offer time? Some online lenders issue offers within 5 working days of full application. Halifax, Nationwide and Barclays are typically fast. Smaller building societies are slower.

Why does completion take so long after the offer? The mortgage offer is one piece — conveyancing has its own timeline of searches, enquiries, and signatures.

Can I lock in my mortgage offer before finding a house? The AIP, yes. A formal offer is property-specific and requires you to have an accepted offer.

Does a remortgage take as long? No — usually 4–8 weeks, since there's no chain and no exchange/completion to coordinate. See How long does a remortgage take?.

This article is for informational purposes only and does not constitute financial advice. Always consult a qualified mortgage adviser before making a decision.