Closing Daycare Notice

[Darling]

My husband and I have the opportunity to sell our home and buy a new home in a different city that would obviously be too far for my current parents. Seeing as we would need to able to do showings during the day, we would probably need to close sometime soon. We're going to find out this weekend what our house could sell for and don't want to tell the parents until we find out if we are correct with how much equity we have in our home (if it's not enough we wouldn't sell). I need to know what the standard is to close your daycare and how much time you need to inform your families. I want to give them as much time as possible but time may not be on our side.