Kourtney Kardashian and Scott Disick are looking to buy a bigger house.

The 'Keeping Up with the Kardashians' star and her 30-year-old boyfriend - who have two children, Mason, three, and 14-month-old daughter Penelope - have their sights set on a six-bedroom mansion in Hidden Hills, California, amid rumours they want to have more children.

The showbiz couple - who have been dating for seven years - currently live in a 5,100 sq-foot home in Calabasas, California, which is complete with just four bedrooms and five bathrooms, but the pair are keen to splash out $6.495 million on an eight-bathroom plush property, just two miles away from Kourtney's mother Kris Jenner's home in Los Angeles, according to TMZ.

The brunette beauty has always expressed the desire to have a big family and previously said she was planning to have at least four children with her beau.

Speaking on her reality show last year, she asked Scott: ''How many children do you think we could fit in this house? In the playroom, I could build bunk beds for four.''

Before adding: ''I'm not going on the pill. I don't believe in it anymore!''