My seven year old was able to complete this build independently. It was several hours worth of building time. In addition, my children have played imaginatively with the completed build.

I don't normally review Lego sets, but this set is definitely worth purchasing. It has so many nods to cat life! Playability is 100% My little one is enthralled with the hidden litter box at the bottom complete with "potty" pieces. We really just bought it for the cute kitties, but everything about it is great. We even had a few extra pieces and were able to make a toy wand. Would highly recommend to any cat lover out there. The colors are nice, and I think would even be a nice addition to tuck onto a shelf with a botanicals set.

My granddaughter love this. I will definitely order more of these!!

My daughter loved this set! Glad to get it at a discount.

My daughter loved this build!

This was a birthday gift and he could not have been more happy to get a set that he doesn't normally see in stores. Made it extra special.

[This review was collected as part of a promotion.] Legos is really coming out with some super cute sets. This cats birthday party tree house is no exception. My daughters loved legs and animals so it a perfect combo. All the little detail are adorable

[This review was collected as part of a promotion.] Absolutely adorable! Perfect for a cat lover or any Lego lover. It is a great addition and one of the better priced ones available. Assembly is easy and comparable to others in the Lego collection. There are small items just like other boxes but safe if done with a parent. It was easy and fun to establish.

[This review was collected as part of a promotion.] We love the Lego Cat Birthday Party & Tree House set! My daughters (ages 4 and 8) have continued to use these as play sets, which means they get taken apart often. Luckily, assembly is so easy with this set. The different colors of each section of the tree house make it a snap to put back together. My only suggestion would be to make a similar Lego set that is similar to this for younger ages, as my toddler enjoyed the set most and required supervision due to part size. Still, it's a great set and also makes a great decoration for daughter's homeschool desk.

[This review was collected as part of a promotion.] These are not the Lego sets from my childhood! The bags are numbered and so are the instructions with easy to follow pictures! I am not sure if I enjoyed putting this together more or my niece did. She will sure enjoy it for months to come as she played with it for at least an hour after first set up. Will be buying these Lego sets again for future gifts!