What does R2R or rent to rent mean?

Rent to rent is a strategy where you agree to rent a property from a landlord for a set fee, you then rent the property out for more. Usually, this involves using your knowledge of strategies to create that margin between the price you pay and the price you make. For example, if you rent a single-let, family home and then make it an HMO and rent the rooms out individually. Another example would be renting a single-family home and re-renting it as short-term holiday accommodation.