Last reviewed: June 2026
TL;DR- The mortgage application process typically takes 4-8 weeks from full application to mortgage offer, with a further 4-8 weeks to completion of the property purchase.
- Key stages are: AIP, full application, documentation submission, credit assessment, valuation, underwriting, mortgage offer, exchange of contracts and completion.
- The conveyancing process (legal transfer of ownership) runs in parallel with the mortgage application and typically takes 8-12 weeks for a standard transaction.
- Delays most commonly occur during valuation, underwriting of complex income, and conveyancing (particularly in chains).
Stage 1: Agreement in Principle (AIP)
The first formal step is obtaining an agreement in principle (AIP) from a lender. This involves providing basic income information and consenting to a credit check (soft or hard). The lender issues a conditional indication of the maximum they would consider lending. This step is typically completed in minutes to hours online, or within a day through a broker. The AIP is used when making offers on properties to demonstrate financial readiness to estate agents and sellers.
Stage 2: Full Application
Once an offer on a property has been accepted, the full mortgage application is submitted. This involves providing detailed documentation: payslips and P60 (employed) or SA302/accounts (self-employed); bank statements (typically 3-6 months); photo ID and proof of address; details of the property being purchased; and the proposed loan amount and deposit source. The application is submitted to the chosen lender via the broker or directly. The lender assigns an underwriter and begins assessment.
Stage 3: Valuation
The lender instructs a valuer to assess the property's market value. This is for the lender's security purposes - not for the buyer's benefit (the buyer should commission their own survey separately). Most valuations are completed within 5-10 working days of instruction. The valuation determines the LTV for the mortgage. If the property values below the purchase price, the lender's LTV calculation is affected and the mortgage offer may be on a lower amount than applied for.
Stage 4: Underwriting and Mortgage Offer
The underwriter reviews all documentation, the valuation report, the credit assessment and the affordability calculation. For straightforward applications, this takes 1-2 weeks. For complex cases (self-employed, adverse credit, non-standard property), underwriting may take 3-6 weeks. Once satisfied, the lender issues a formal mortgage offer. The offer is sent to the borrower and solicitor and is typically valid for 3-6 months. New build mortgage offers may be valid for up to 12 months.
Stage 5: Exchange and Completion
Legal conveyancing runs in parallel with the mortgage application. The solicitor conducts title searches, reviews the contract, raises enquiries and reports to the buyer. Exchange of contracts makes the transaction legally binding. Completion (when ownership transfers and the buyer receives keys) follows exchange, typically 1-4 weeks later. On the day of completion, the mortgage funds are drawn down and transferred to the seller's solicitor.
Frequently Asked Questions
How long does the mortgage application process take?
From full application to mortgage offer typically takes 4-8 weeks for a straightforward case. Complex cases (self-employed income, adverse credit, non-standard property) take longer - 6-12 weeks is possible. The conveyancing process runs in parallel and typically takes 8-12 weeks for a standard freehold purchase, longer for leasehold properties or properties in chains. Total time from offer accepted to completion is typically 10-16 weeks for a standard transaction.
What documents do I need for a mortgage application?
Standard documents include: payslips (last 3 months for employed borrowers); P60 (last tax year); bank statements (last 3-6 months); photo ID (passport or driving licence); proof of current address (utility bill or bank statement dated within 3 months); details of existing financial commitments; and for the property: the estate agent details, agreed purchase price and solicitor details. Self-employed borrowers additionally need SA302 tax calculations, tax year overviews and certified accounts for the last 2-3 years.
Can the mortgage offer be extended if completion is delayed?
Yes. Most lenders will extend a mortgage offer by 1-3 months if completion is delayed due to factors beyond the borrower's control (vendor delays, conveyancing complications, chain issues). An extension request should be submitted before the existing offer expires. If the market has moved significantly since the original offer, the lender may apply revised criteria or rates to the extended offer, though many lenders honour the original terms.
What happens between exchange and completion?
After exchange, the conveyancing solicitor submits the completion statement (showing the final balance due), arranges the drawdown of mortgage funds from the lender for completion day, and confirms the completion date with all parties. The borrower arranges buildings insurance to be in force from completion date (or from exchange in most lender requirements). On completion day, the funds are transferred, the title transfers to the buyer and keys are released.
