It took us about 15 hours to put it together. My husband mostly did it by himself and I helped a bit, mostly by getting the materials ready for the next step. Some of the instructions could have been clearer (some pieces had to go a certain way but it didn’t say that. It was only when we went to the next step that we realized the mistake). A few pieces of the hardware were defective but luckily it came with a few extra. The kids absolutely love it (ages 2 & 6). Very much worth it