Hi
Well, if I could have new space, this is what I would ask for:

1. At least one room with tile floor, sink with running water and counters. (this would actually be handy in all rooms!)
2. GOOD LIGHTING and windows!
3. Plenty of electrical outlets
4. Handicapped accessible
5. Walls that can be painted- not concrete block
6. Bathrooms close by!
7. Space that can be used for cooking/food activities
8. Doors with windows in them

One thing I have enountered is that when you have new space, all of a sudden people don't want it used by children- watch out for that.

For nursery/toddler care:
Clean, bright, and looking like a day care centre! Weird, I know, but young parents expect it and judge a church by the child care areas. If the nursery is in the basement, people will not come back.

Invest in a pager system- worth every penny in peace of mind and good will.

I hope that helps!
Blessings
Jan S