One thing I will add just on the off chance it applies. You need to be the ONLY home daycare running under that roof.

I knew of a private school that had rented out space in their building to 2 home daycares. Each had 5 kids, different floors of the building, run completely separate of each other. One day the inspectors showed up, called all the parents and shut them down then and there. One was allowed to continue but you CANNOT have 2 home daycares under one roof.

Just be mindful of what else is running in the building.