Hi Guys, Yes, provided you own the site outright, most lenders who offer stage payment mortgages, will lend you 100% of construction costs. Is the new home intended as your primary principal residence? If so, you won't have any trouble applying for the new mortgage. Like Oriel said, as long as there is sufficient potential rental income to cover each cost of each existing mortgage, the banks will treat the new self-build mortgage as your only "outgoing" as such (apart fro car loan). So what I would advise you to do is, work on clearing that car loan as soon as possible as it may effect your borrowing capacity. And keep your finance in order. Don't go overborrowing or taking out new loans. And, it goes without saying, be sure that you do not even come close to missing a mortgage/loan repayment to your creditors. Have you gone about planning the build yet? If so, how much do you think you will need? J