"It took me 1 hour, including stacking my boxes! Excellent quality and instructions! Based on a friend's comments, I put the 1st 2 shelves on in my apt, then moved it out to my balcony storage closet to attach the top 2 poles and 3 shelves; perfect! I did use a short ladder to slide on the top 2 shelves." - Review posted on Homedepot.com