Remortgaging a buy to let property

If you own a buy-to-let property, the mortgage deal you took out when you bought it won’t always be the best deal for the long term.

Rates move, lender criteria change, and your circumstances as a landlord evolve. Remortgaging with Bennison Brown lets you review your current deal, secure better terms, potentially reduce mortgage repayments, and make sure your investment is still working as hard as it should be for you.

When should you review your existing buy-to-let mortgage?

The most obvious trigger is your current deal coming to an end. If you’re on a fixed or tracker rate that’s due to expire, you’ll soon be moved onto your lender’s standard variable rate (lender’s SVR) once it finishes, which is often more expensive. Our experts help you review remortgage rates up to six months before this happens, giving you time to secure a new deal without a gap in cover.

It’s also worth contacting us to review your mortgage application if your circumstances have changed. A rise in your property’s value could mean you now qualify for a lower loan-to-value bracket and a better rate. An increase in rental income could open up options that weren’t available to you before. And if you’re planning to expand your property portfolio, releasing equity through a remortgage is often a more efficient route than other forms of finance.

Even if nothing specific has changed, it’s sensible to check the market periodically to ensure your mortgage needs are met. Buy-to-let rates and criteria shift regularly, and a deal that was competitive two years ago may no longer be the best fit.

Key lender requirements when remortgaging a buy-to-let property

Buy-to-let lenders assess remortgage applications differently to residential ones, with more weight placed on the property itself and the expected monthly rental income it generates. Understanding what lenders are looking at helps you prepare and avoid delays.

Your equity

Lenders look at how much equity you already have in the property by assessing the loan-to-value ratio, which is the size of the mortgage compared to the property’s current value. The more equity you hold, the lower your LTV, and generally the better the rates and terms available to you.

Most buy-to-let lenders want to see a minimum deposit of at least 25%, though the most competitive deals often require more. If your property has increased in value since you bought it, or you’ve paid down some of the mortgage, you may find you qualify for a considerably better rate than you’re on now.

Rental income

Lenders need to be confident that the rent covers the mortgage payments comfortably, not just in the current market but if rates were to rise. This is done through a rental cover calculation, sometimes called an interest cover ratio, which compares your rental income against a notional interest rate set by the lender.

Most lenders want the rent to cover somewhere between 125% and 145% of the mortgage payment, with the exact figure depending on your tax status and the lender’s own rules. If your rental income has grown since you last remortgaged, this is often the area where you’ll see the biggest improvement in what’s available to you.

Affordability

Alongside the rental calculation, some lenders will also look at your personal financial position, particularly if you’re a portfolio landlord with four or more mortgaged properties, or if the rental cover alone doesn’t comfortably clear their threshold. This can include your personal income, existing commitments, and how your portfolio performs as a whole. Lenders want reassurance that you could cover the mortgage even if a property sat empty for a period, so a clear picture of your overall finances works in your favour.

buy to let flat

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