• Mortgages
  • Protection
  • Wills & Trusts

Let to Buy Mortgages

Define: Let To Buy

This type of mortgage allows a buyer to raise money on their existing property, which may then be rented out, to assist with the purchase of a new home.

For many buyers, finding their new home is not the main issue, but selling their existing one is the frustrating part. With demand for rental property at a high and rental incomes rising as a result, a growing number are looking at keeping their existing property and becoming landlords themselves.

This has given rise to the Let To Buy mortgage, which allows you to take a mortgage on your new home, whilst renting your existing home out to tenants.

If you have a certain amount of equity in your existing home, you can even take out a Let To Buy loan without a cash deposit. Instead, you simply remortgage your existing home, freeing up an advance of funds, and use this advance as a deposit on the new property.


  • You can earn rent from your existing property and purchase another property anywhere in the UK, very useful if having to relocate
  • It can make all the difference in a chain situation if selling the property is proving more difficult than initially envisaged
  • It enables you to keep your current property as a long term investment whilst the mortgage is paid by the tenants and even become the start of a property portfolio

Affordability & Rental Income

In general, any new mortgage lender calculates the maximum that they are prepared to lend you and does not take your existing mortgage into consideration as a commitment as long as the rent covers the existing mortgage payment.

Different lenders have differing calculations for this, for example a lender may want the rent to equal 125% of the mortgage payments at an assumed interest rate of 6%.

If the rent does not cover this, then any additional payments will be taken off your income when calculating how much you can borrow on the new property. It can all get rather complicated!

If your income is sufficient to cover your new loan and your existing mortgage, then you are home and dry.

Consent To Let

Many lenders who are granting the mortgage on your new property will now want to see Consent to Let from your existing lender. This shows that your existing mortgage provider is aware that the property is going to be let out and is happy for you to do so.

Some lenders will only grant this if there is a good reason, for example, a job relocation whilst others will accept but will increase the current interest rate you are paying.

Whilst there are lenders who do not ask for such consent, it is always important to be above board with both lenders and not being so can void your mortgage contract, your buildings and contents insurance and potentially lead to serious allegations.

Buy-To-Let Mortgages

Re-mortgaging your existing property on to an official Buy-To-Let or Rent-To-Buy Scheme is the best option for many, as this could enable you to release some much needed equity in your current property to use as a deposit for the new one.

Lenders will assess the borrowing capacity not on your current income, but on the rental income that can be achieved which is then put through a specific formula. For example the rental income must equal 125% of the mortgage interest payments at the mortgage pay rate.

This cover does vary from lender to lender so it is important to speak to an expert who understands all the small print.

Being A Landlord

Whilst being a landlord can be highly profitable it is certainly not for everyone. Being woken up by the phone ringing at 3 am because of a faulty boiler and finding the time to fix little niggles can prove to be too much. Employing the services of a good management agent will reduce this stress, but eat into your profits so make sure this is costed in from outset.

You should also prepare for the possibility of the odd void period. Suddenly having to pay two mortgages may be a stretch so it is a good idea to have at least 3 to 6 months mortgage payments in an emergency account just in case.

There are also a plethora of rules and regulations a landlord should know, so make sure you do your homework and know what you are liable for.

Points to Consider

  • Not all homes are suitable for letting, for example, some areas may have an over-supply of 1 bedroom flats making renting similar property difficult
  • If your property is leasehold you will need to make sure that your lease has no restrictions on the letting of your property
  • You must inform your building and contents insurer
  • It is important to speak to a professional Mortgage Adviser to gain all the facts before proceeding

For more information about Let To Buy, please call one of our consultants on 020 7220 5100 or click here for further contact options.


Your property may be repossessed if you do not keep up repayments on a mortgage or any debt secured upon it.

There is no guarantee that it will be possible to arrange continuous letting of the property, nor that rental income will be sufficient to meet the cost of the mortgage.


Bow Terrier

Mortgage Guides

This is Bow, he’s a plucky little Boston Terrier and knows a thing about mortgage applications. His owner, Patrick, is one of our clients and Bow here helps with his paperwork. If there’s anything you need to know about mortgage applications or the paperwork entailed then check out our advice hub – it has everything you need!

View the mortgage guides

Compare the best mortgage products

So you want to research the market yourself? Try our handy mortgage finder - it’s better than traipsing round dozens of bank branches.

Click here to get started

Victor Cooke – June 2014

Great, Worked hard to find the most appropriate mortgage product.

Adviser: Anh Nguyen C1024205