xLet to Buy mortgages are a specialist type of property finance used by homeowners who wish to move home while retaining their current property as a rental investment. They combine elements of residential and buy-to-let lending, and are assessed carefully by lenders based on affordability, rental income expectations, and existing mortgage commitments https://smartcitymortgages.co.uk/blog/let-to-buy-mortgages-how-they-work-pros-cons-eligibility/ . The structure is designed to support a transition from owner-occupier to landlord without requiring an immediate sale. Understanding What is a Let to Buy mortgage? involves recognising that it is a process where an existing residential property is converted into a rental asset while a new main residence is purchased. Typically, the existing mortgage is switched to a buy-to-let product, while a new residential mortgage is arranged for the onward purchase. Lenders evaluate both transactions together to ensure affordability across both commitments, taking into account projected rental income and borrower income stability. This arrangement is often used in property chains where selling immediately may not be practical. How does Let to Buy work? In practice, the homeowner applies for consent or a product transfer on the existing property to move it onto a rental basis. At the same time, they apply for a residential mortgage on the new home. The lender will usually require a valuation of the current property to determine achievable rent, alongside stress testing of both mortgages. The rental income is typically required to cover a proportion of the buy-to-let mortgage payments, though exact requirements vary between providers. Coordination of timing is important to ensure both transactions complete smoothly. Who is a Let to Buy mortgage suitable for? This option is generally suitable for individuals who want to move home without selling their current property, particularly in situations where the housing market is slow or property values are expected to rise. It may also appeal to those seeking to build a property portfolio gradually. However, it requires sufficient income and equity to support two mortgage arrangements simultaneously, and not all borrowers will meet affordability requirements.