We are hoping to do the work ourselves, of course for as little as possible.
Any info is appreciated.
Add plenty of windows - garages are notoriously dark, and nobody wants to play in a dark room. Consider a pull-down ladder to access attic for storage if this is a separate space. Get permits if required. We did it ourselves except for the carpet installation. We care for our 3 grandchildren aged 6 months to 4 years and needed a place to contain them while at our home.