Buy to Let Flat Mortgage

What other costs do I need to consider for a mortgage on a Buy to Let flat?

If you’re buying a Buy to Let flat, you need to allow for legal costs and stamp duty. There will also be maintenance and repairs at the property on an ongoing basis, plus unexpected issues with plumbing or roof repairs, for example, that may come along further down the line.

You’ll need various insurances, including buildings cover and landlord insurance. Something to think about is suddenly finding you don’t have any tenants in the property to pay the mortgage for three or four months. If you’re not generating any rent, that’s going to be a cost you need to cover.

There are also compliance checks to be done, such as energy performance certificates, annual gas safety checks, electrical inspections, and things like that.

What if I have bad credit? Can I still get a Buy to Let mortgage on a flat?

The nature of the bad credit will be the determining factor in this. It comes in all different shapes and sizes.

It’s all based on your individual circumstances, but some lenders don’t do a typical credit scoring where the computer says no. They will look at cases on an individual basis. For those who are a little more lenient with credit history, you‘re likely to pay a slightly higher rate.

Bad credit doesn’t necessarily rule you out of the house-buying process, whether it be a Buy to Let or a residential.

How does remortgaging a Buy to Let flat work?

It’s quite a straightforward process. It would be a case of looking at the lenders based on your personal circumstances and situation, and choosing one that’s right for you.

With remortgaging, as opposed to purchasing, the only slight difference could be a request for additional information, such as tenancy agreements and bank statements, to prove you’re receiving the rental income.

Can I get a Buy to Let mortgage on a flat if I’m self-employed?

Yes. Some lenders will have minimum income criteria, which is no different whether you’re self-employed or employed. You just need to meet this criteria.

Many Buy to Let lenders base the mortgage size on the potential rental income of the property, as opposed to anything else. As long as the property is of suitable construction, being self-employed is no hindrance.

How do I add additional properties to an existing Buy to Let portfolio work? Any differences here for flats?

There’s no difference at all for flats or houses. The only difference with the process would be finding a lender who allows you to have more than one Buy to Let property.

Each lender has its own maximum number of properties for access to their products, so it would just be a case of finding the right one to suit that need.

How do I get a Buy to Let mortgage for the first time? What’s the process?

First and foremost, speak to a mortgage broker – just to make sure that your personal circumstances and eligibility fit with obtaining a Buy to Let mortgage.

Once that is all ticked off, it’s a case of finding the right flat to purchase. Consider carefully whether it’s going to be a decent investment – it’s worth speaking to a rental agent locally for an idea of what’s in demand and the potential rental income.

From there, it should be fairly straightforward, with the next step being to find legal representation to continue the purchase.

How can a mortgage broker help here? Anything else to add?

There’s a lot to consider in finding the right mortgage, and getting a mortgage broker on board will really support you through the process.

We can save a lot of time by researching the right products and making sure you’re getting the right lender the first time. We then submit the application and look after all the documents along the way. We take the stress out of doing it yourself.

Key Takeaways:

• You can get a mortgage for a Buy to Let flat, but this needs to be a Buy to Let mortgage, typically requiring a 20% to 25% deposit for better rates.
• Affordability is calculated based on the potential monthly rental income, not primarily on your personal income.
• The choice between an interest-only mortgage (higher monthly income) or a repayment mortgage (zero loan balance at term end) depends on your personal investment goals.
• Budget for stamp duty (as a second property), legal fees, ongoing maintenance, insurance, and the possibility of covering the mortgage during tenant voids.
• A broker is recommended to confirm eligibility, research products, find the right lender, and manage the application process.

YOUR PROPERTY MAY BE REPOSSESSED IF YOU DO NOT KEEP UP REPAYMENTS ON YOUR MORTGAGE.

MOST BUY TO LET MORTGAGES ARE NOT REGULATED BY THE FINANCIAL CONDUCT AUTHORITY.

Approved by The Openwork Partnership on 05/01/2026.