HARRY Potter author JK Rowling is creating two tree houses for her children - which are in true Harry Potter-style - costing more than $A220,000.

Her plans include two-storey tree houses that is 40ft high, and they are going to be built on stilts.



Each house has huge Hogwarts-like turrets, a rope bridge and even an underground secret tunnel.



In the plans obtained by The Daily Mail, the structures are so large that the famous author will need to have council permission to build them at the back of her mansion.



Two of Miss Rowling's three children, David, 9, and Mackenzie, 7, will be given the mega tree houses to play in.



The tree houses will protect them from the public looking in, and feature a trap door, an escape pole, a slide and some swings.



More at The Daily Mail.