I did one for "Escape to the Country" a few years back.
None of the other local cleaners really wanted it and kept giving them another number to call, I did this in the first instance, the production manager then called me in a very desperate state as they were filming at 11am in the morning, basically told me to charge whatever I wanted, so I stung them big time!
They paid up happy as when they arrived on site the next morning.
The place wasn't even finished but they filmed and edited it to look as though it was.