J.K. Rowling Building $200K Treehouse for Her Kids

Blue Forest UK

The Two-Story Structures Will Include Slides, Spiral Staircases and Turrets

When your mom is worth an estimated $850 million, it's a safe bet that you might not be building a fort out of a cardboard box in the backyard.

If your mom is Harry Potter near-billionaire J.K. Rowling, your backyard playhouse isn't even a house … it's more like a playhouse village, and instead of a playhouse, you're getting multiple tricked-out treehouses, custom-built at a cost of more than $230,000.

Read: J.K. Rowling Writing Book For Adults

Rowling, whose Potter universe works have earned her the aforementioned $850 million, is building a backyard treehouse paradise for her two kids, David, 9, and Mackenzie, 7, at her Edinburgh home.

The two-story structures, built among the trees at Rowling's home, are being built on stilts, and will feature balconies, turrets, trap doors, secret entrances, slides and spiral staircases, MNN.com reports.

The design, which is so massive that is has to be reviewed by a planning committee, was created by a company called Blue Forest UK, which specializes in "sustainable luxury treehouses," a phrase that just screams, "Hey, I'm filthy rich!"

Blue Forest's prices start at $30,000, but MNN.com reports Rowling is dropping at least $230,000 on her children's backyard fantasy land.

The 46-year-old author, whose next book, The Casual Vacancy, will be released on Sept. 27,  has already spent a lot of time and money customizing her estate. Last year, she got permission to tear down a $1.6 million house near hers, so she could expand her garden into the space.

Read: HUH? J.K. Rowling No Longer on Forbes' Billionaires Club

Her neighbors, though, don't seem to have a problem with her extravagant makeovers.

"Nobody around here is going to make a fuss about the treehouses for her children," one of Rowling's neighbors told the U.K. Daily Mail. "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 treehouses are huge, nobody but her is going to see them. In any case, she's extremely nice and well-liked around here."

Especially if she opens up that fancy estate to the neighborhood.