I would second what other's have said.
Overall building took about 16 hours by myself with help on the slide.

The slide is particularly frustrating as the pieces dont line up easily. The exit has two bolts in particular that took me almost 30 minutes to get in as there isnt enough room to hold the bolt and screw it in. It was difficult even with needle nose pliers.

They should let you know that depending on when you line up the different slide pieces there is one hole that doesnt line up with anything. 

The slide may make you go Chevy Chase on it, and will require two people. 

My son loves the clubhouse!

AP