United Kingdom, May 18 -- Heidi Montag and Spencer Pratt "don't have the finances" to rebuild their home.

The 38-year-old TV star and Spencer, 41, lost their home in the Los Angeles wildfires earlier this year, and Heidi has now admitted that they don't have the money they need in order to rebuild the property.

Speaking to The Independent, Heidi explained: "They're saying it's gonna cost five million to rebuild the house that cost a third of that; we just don't have the finances, and I'm not sure we can keep our lot because you still have to pay a mortgage on it. I'm not sure what we're going to be able to do."

Heidi is determined to work as hard as possible in a bid to raise money. However, the reality star isn't sure if it'll be enou...