Delevingne, 21, has been asked to find her own place when her parents move out of their 10 million pounds mansion as they no longer want to accommodate her 'ever-expanding' wardrobe, reported Contactmusic.
"Cara has always lived at home and gets on very well with her parents so it made sense for her to stay put. But Charles and Pandora are selling up to buy a smaller house now their kids have grown up.
"They told Cara she needs to find her own digs because they won't have room for her and her ever-growing wardrobe," a source said.
"Poppy is helping her with viewings. She wants space, lots of privacy and somewhere super-quiet so all the attention she gets doesn't make her a nightmare for a new neighbour," the source added.
Meanwhile, Delevingne previously had plans to move in with fellow model Georgia May Jagger in North London last year, but is now being forced to find her own place after Georgia, 22, started dating rocker Josh McLellan.