BILLY CRYSTAL is counting the cost of having a large family – the funnyman is anticipating a massive construction bill after various delays to the expansion of his California home.

The When Harry Met Sally star and his wife Janice will be grandparents for the third time when their daughter gives birth in October (09), and they were hoping to surprise their expanding family with a new play area in their Pacific Palisades home.

But the project has been hit by a slew of setbacks – and Crystal admits he has no idea how expensive the invoice will be when he’s billed for the home improvements.

He says, “They (the builders) have been there way too long… They’ve been there 18 months and the foreman says it’s going to be another six or seven… Years? Who knows.

“Basically we have Iraq next door. We don’t know when it’s stopping, how much it’s going to cost us… It’s been awful.”