Reality TV star Kim Kardashian and rapper Kanye West are "sparing no expense" over renovating their home.

The couple is currently revamping their mansion and despite West claiming that he is over $50 million in debt, they only want the best fittings for their house and are willing to pay, people.com quoted a source as saying.

`They both make a ton of money but they also spend a ton. And they are sparing no expense with their new house. $20,000 fixtures, the perfect flooring - the costs have been endless,` said the source.

While they are working hard to give themselves and their children - two-year-old daughter North and two-month-old son Saint - their perfect home now, they are "disappointed" that their Bel Air mansion didn't work out for them.

`It was a huge mistake. Both Kim and Kanye were really disappointed in how that turned out,` the source added.