I currently own a flat with my husband, but we are looking to move to a bigger property. We would like to keep the flat to rent out, rather than sell it. We have a outstanding mortgage with a building society of c.£120k on flat, which is valued at c.£240k. The new property we are interested in is £340k.
Is it possible to transfer our current mortgage to a buy-to-let (including requesting this for £150k to give us a £30k deposit towards the new property) then get a homeowner's mortgage on the new property?