How long does a buy-to-let remortgage take?

Type of remortgage	Typical time
Product transfer with your existing lender	A few days to 2 weeks
Like-for-like remortgage to a new lender	4 to 6 weeks
Remortgage that raises extra money	6 to 8 weeks
Limited company, portfolio or complex cases	6 to 8 weeks or longer
From mortgage offer to completion	1 to 3 weeks

These are typical ranges published by brokers, not guarantees. Every case depends on the lender, the property, the paperwork and how quickly each party responds.

Remortgaging is now the busiest part of buy-to-let lending. UK Finance counted 39,631 buy-to-let remortgages in the second quarter of 2026, about two in three new buy-to-let loans. A further 86,300 landlords switched to a new deal with their existing lender. With Bank Rate rising to 4% on 5 November 2026, many landlords are planning around the date their current deal ends.

The remortgage timeline, stage by stage

A remortgage to a new lender usually runs through six stages. The times below are typical for a straightforward case.

1. Review the current mortgage (up to a week). Landlords check the deal end date, balance, early repayment charges and the rate the mortgage reverts to.
2. Research and decision in principle (1 to 3 days). A broker compares lenders and checks how much each is likely to lend against the rent and value.
3. Full application (1 to 3 days). This is only quick when the documents are ready.
4. Valuation (about a week). The lender's surveyor confirms the property's value and, for buy-to-let, usually its market rent. Some lenders use automated valuations for simpler cases.
5. Underwriting and mortgage offer (2 to 4 weeks from application). The lender checks the rental calculation, credit history and, for larger landlords, the wider portfolio.
6. Legal work and completion (1 to 3 weeks after the offer). A solicitor or conveyancer gets a redemption statement from the current lender, checks the title and completes. The old loan is repaid and the new one starts that day.

Many remortgage products include free legal work and a free standard valuation, which can simplify this stage.

Offers usually stay valid for several months. Nationwide, for example, keeps remortgage offers open for 180 days. That is why landlords often apply well ahead and time completion for the day their current deal ends.

Product transfer or full remortgage: the speed difference

A product transfer is a new deal with your existing lender on the same loan. A remortgage replaces the loan with one from a different lender. The second takes longer because it involves a new application, valuation and legal work.

	Product transfer	Remortgage to a new lender
Typical time	A few days to 2 weeks	4 to 8 weeks
New valuation	Usually not needed	Usually needed
Solicitor	Usually not needed	Needed, often included free
New rental test	Often not required	Yes
Raising extra money	Needs a further advance, which may involve underwriting and a valuation	Possible, subject to the new lender's criteria
Choice of deals	Existing lender's range only	Any lender the case qualifies for

Product transfers are the more common route. In the second quarter of 2026, UK Finance recorded 86,300 buy-to-let product transfers against 39,631 remortgages to new lenders.

Speed is only one factor. A product transfer avoids a new rental test, which can matter when rent is tight against today's rates. A remortgage opens up the wider market and is the usual route for raising money or changing lender.

Limited company and portfolio cases take longer

Some buy-to-let remortgages carry extra checks, which add time to underwriting and legal work.

Limited companies (SPVs). Lending to limited company landlords rose 60.4% year on year to about £2.61 billion in the second quarter of 2026. These cases typically involve:

• checks on the company itself, its directors and shareholders
• personal guarantees from the directors, with some lenders asking for independent legal advice on the guarantee
• legal work covering both the company and the guarantees

Portfolio landlords. Under Prudential Regulation Authority rules, a landlord with four or more mortgaged buy-to-let properties is treated as a portfolio landlord. Lenders then look at the whole portfolio, not just the property being remortgaged. That usually means a schedule of every property with its value, loan and rent, and sometimes a business plan, cash flow forecast or statement of assets and liabilities. Some lenders also apply minimum figures across the portfolio, such as an overall rental cover or loan-to-value limit.

Other cases that can add time:

• HMOs and multi-unit blocks, which need specialist valuations and licensing checks
• remortgaging off a bridging loan after a refurbishment
• raising extra money, where the lender asks about its purpose (see can I borrow more when I remortgage?)
• leasehold flats with short leases or building safety questions

Moving a property from personal ownership into a company is not a remortgage. It is a sale to the company, with conveyancing, Stamp Duty and Capital Gains Tax to consider, and tax advice is usually needed first.

Common causes of delay, and the documents lenders ask for

Most delays come from the valuation, the legal work or missing paperwork. Common causes include:

• a valuation below the expected figure, or a rental valuation below the current rent
• missing, unsigned or out-of-date documents
• title problems, short leases or building safety queries on flats
• waiting for the current lender's redemption statement, or a busy solicitor
• changes in circumstances during the application, such as new credit or a change of income
• the chosen product being withdrawn before the application goes in, as lenders reprice often

Documents buy-to-let lenders commonly ask for:

• photo ID and proof of address
• the latest mortgage statement for the property
• the current tenancy agreement and evidence of the rent received
• proof of personal income, such as tax calculations (SA302s), tax year overviews or payslips
• recent bank statements
• a property portfolio schedule, for landlords with several properties
• company details and accounts, for limited company borrowers
• details of any works or other use for extra borrowing

If the remortgage is not finished before the current deal ends, the loan usually moves onto the lender's variable rate until completion. There is normally no early repayment charge once the deal has ended, so the remortgage can still complete, but each month on the variable rate is likely to cost more.

Talk to a buy-to-let broker

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Important information. This article is general information about the UK buy-to-let market, written as at 7 November 2026. It is not financial, tax or legal advice and is not a recommendation of any product or course of action. Timescales are typical ranges, not guarantees. Buy to Let Remortgages does not give advice or arrange mortgages. We pass enquiries to a buy-to-let mortgage broker. Most buy-to-let mortgages are not regulated by the Financial Conduct Authority. All lending is subject to the lender's criteria, valuation and underwriting. Your property may be repossessed if you do not keep up repayments on your mortgage.

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