Cottage Living: Prep and Plans

I have been making cottages with the pond areas included (waiting for water). I am trying to build smaller and this creates problems. When a child brings home a project I have to maneuver to get somewhere to put it.
I usually build big houses, so this is a challenge. I have two families ready to move in, one is a single who is living off grid in Evergreen Harbor. Both are gardeners, no tv in the family home and they interact with each other more.