The glamour model shared a snap of the sprawling land at her Sussex pad, which showed the gate before it disappeared.
She captioned the shot: “Seems I have a scum bag who has stolen my gate in my fields.”
Her outburst came as she enjoyed a day out with her kids in Horsham, dining at eaterie Bill’s, before taking in a cinema screening of Kung Fu Panda 4.
Katie made a point of mentioning she was enjoying “family time”, as her ex Peter welcomed his newest child with new wife Emily.
Emily, 34, gave birth to her third child yesterday and Peter, 51, shared the lovely news with fans as he revealed the adorable first pictures.
He admitted, however, that they are yet to name her, telling his followers: “Only thing is…. She has no name yet. Help !”
Emily and Pete are already parents to Amelia, nine, and eight-year-old Theo.
Pete shares Junior, 18, and Princess, 16 with Katie.
Katie is yet to congratulate Pete and Emily publicly, but she has a lot on her plate at the moment beyond her stolen gate.
The mum of five has found herself in hot water over an irresponsible diet post on instagram.
The post could see her banned from the social media platform and face an Ofcom investigation.
The role model was forced to remove the social media post after claims that it promoted a diet that fell below 800 calories a day, while also not being obviously recognisable as an ad.
Katie shared the reel last August for The Skinny Food Co. where she gave a rundown of what she ate in a day, featuring a number of the brand’s range of products.
The former Loose Women star made several references to weight loss attempts, at one point stating “God look at that double chin, here’s why I’m on the Skinny Foods.”
In the caption she added: “Another example of how you can eat so many delicious meals and snacks in the day.
“All of this was only 755 calories and helping me stay in a calorie deficit to shift some extra pounds when needed.”
Everything you need to know about Katie Price
Step inside the life of former glamour model Katie Price
And that’s not all – last month Katie was also declared bankrupt for a second time.
She now faces losing her £2million Sussex pad, dubbed Mucky Mansion – or could see bailiffs come around to take anything that could help pay back her spiralling debts.
The hearing, held at the Rolls Building in London in March, heard she owes HMRC a total of £761,194.05.
And her total debts are believed to amount to £3.2 million.