Took about 4 hours to assemble. Lots of pegs and screws. Only need a screw driver and a hammer for assembly. Could have gotten done sooner, but did take some breaks. Seems pretty sturdy! Great addition to our son’s room. Only complaints are that the pieces didn’t come in the cleanest boxingplastic. Lots of dust, broken small pieces of styrofoam, and cloudy colored plastic that contained the screws.