A next time buyer involves a property owner who is looking to move into another home. In this case, they may need to take out a new mortgage to pay for their next home or apply to transfer your existing mortgage to the new home (this is known as porting). You can also remortgage to raise money for a deposit on a new home if you are buying a second home to rent out as a buy to let, wish to live in the property part time or are moving to a cheaper mortgage rate.
If the sale value of your home covers the purchase price of the new home, there is also always the option to use the equity from your current home to pay for a new house outright. This is because your mortgage will be repaid in full when you sell your current home to buy another so you could use the equity in your home either to pay for the home or just for the deposit.