J.K. Rowling is building a Hogwarts-themed playground for her kids.

The 'Harry Potter' author is planning a 40ft adventure playground based on her best-selling novels about the boy wizard for her two children, David, nine, and seven-year-old daughter Mackenzie, in the back garden of her Edinburgh mansion.

The play area takes its inspiration from the fictional school of witchcraft and wizardry and is estimated to be costing $232,919 and is so big she needs to get planning permission to build it, but it doesn't look like local residents will be complaining.

A neighbor told the MailOnline website: ''Nobody around here is going to make a fuss about the tree houses for her children. It's her cash she can do what she wants with it.

''Miss Rowling has spent a lot of money on trees surrounding her property so even if these tree houses are huge nobody but her is going to see them. In any case she's extremely nice and well-liked around here.''

Luxury tree house makers Blue Forest UK are in charge of building two two-storey tree houses - one for each child - which will be raised on stilts and boast balconies, carvings and turrets straight out of the magical 'Harry Potter' universe.

Rowling, 46, lives in the 17th century mansion with her husband Dr. Neil Murray, their two children and 18-year-old Jessica, her daughter from her first marriage.

She is worth $869.5 million according to the 2012 Sunday Times Rich List.