How To Choose Between Residential And Buy-To-Let Mortgages

do you need a buy to let mortgage for airbnb - Townhouses Buildings At Waterfront

Buying property is one of the biggest financial decisions most people will make, but the type of mortgage you choose depends entirely on how the property will be used.

Many buyers are unsure which route suits their goals best, especially as more people explore side income opportunities through holiday lets and platforms like Airbnb.

Understanding the differences between residential and buy-to-let mortgages can help you avoid costly mistakes and choose the right option for your future plans.

What is a residential mortgage?

A residential mortgage is designed for people buying a property they intend to live in as their main home. These mortgages are generally more accessible for first-time buyers and often come with lower interest rates compared to investment-focused borrowing.

Lenders assess affordability based largely on your personal income, regular outgoings, credit history and employment status. The amount you can borrow is typically linked to your salary.

Residential mortgages are commonly used for:

  • First homes
  • Family homes
  • Remortgaging your current property
  • Moving house

Most residential mortgage products require lower deposits than buy-to-let mortgages, with some lenders offering deals starting from five per cent deposits for eligible applicants.

What is a buy-to-let mortgage?

A buy-to-let mortgage is intended for properties that will be rented out to tenants. Rather than focusing purely on your salary, lenders assess the expected rental income the property could generate.

Buy-to-let mortgages are popular among:

  • Property investors
  • Landlords building long-term portfolios
  • Buyers seeking additional retirement income
  • Individuals purchasing student or professional rental properties

Deposits are usually larger, often starting at 20 per cent to 25 per cent, and interest rates can be slightly higher than residential mortgages because lenders view rental properties as a greater risk.

Can you use a residential mortgage for Airbnb or holiday lets?

Buyers often question whether they really need a buy-to let-mortgage for Airbnb. If you plan to rent out your property on a short-term basis through platforms such as Airbnb, you cannot automatically assume a standard residential mortgage will allow it. 

Many lenders restrict short-term holiday lets unless specific permission is granted. In some cases, you may need:

  • Consent to let
  • A specialist holiday let mortgage
  • A buy-to-let mortgage designed for short-term rentals

Failing to disclose this to your lender could breach your mortgage conditions, so it is important to discuss your plans fully with a mortgage advisor before purchasing.

Why professional mortgage advice matters

Mortgage rules have become increasingly complex in recent years, particularly around affordability checks, stress testing and rental calculations. Choosing the wrong type of mortgage can create problems later, especially if your circumstances change.

An experienced mortgage advisor can help you:

  • Compare lenders and rates
  • Understand deposit requirements
  • Assess affordability
  • Navigate buy to let regulations
  • Explore options for holiday lets and Airbnb properties

The best mortgage is not always the cheapest headline rate. It is the product that supports your long-term financial plans while remaining affordable and flexible as your life evolves.