"The costs have been endless," a source tells PEOPLE of their home in Hidden Hills, California

By Elizabeth Leonard Aili Nahas
February 17, 2016 08:00 AM

Money is no object when it comes to Kim Kardashian West and Kanye West‘s new home in Hidden Hills, California.

“They both make a ton of money but they also spend a ton. And they are sparing no expense with their new house,” a source tells PEOPLE in this week’s issue. “$20,000 fixtures, the perfect flooring – the costs have been endless.”

Kim Kardashian West and Kanye West's Hidden Hills estate
X17online; Inset: Getty

The couple and their children – North, 2, and Saint, 2 months – have been living with family matriarch Kris Jenner while renovating their home.

Meanwhile, the couple’s Bel-Air mansion remains on the market.

For more from Kim and Kanye – including their separate finances, lavish home plans and what Kim thinks about her husband’s Twitter drama – pick up this week’s issue of PEOPLE, on newsstands Friday

“It was a huge mistake,” says a family insider of the property, which the couple bought for $11 million in 2013 but never lived in. “Both Kim and Kanye were really disappointed in how that turned out.”

Forbes estimates Kardashian’s 2015 earnings at $53 million and his in 2014 at $20 million, but West turned heads when he tweeted he has $53 million in “personal debt” and publicly asked Mark Zuckerberg for $1 billion. West , 38, later clarified his remarks, tweeting that he is “personally rich” but needs “access to more money in order to bring more beautiful ideas to the world.”

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