LEGO Ideas and CUUSOO 21318 Tree House

LEGO Ideas set 21318, Tree House, depicts a lived-in structure built among tree branches, with a domestic and nature-focused setting. Released in 2019 under LEGO Ideas and CUUSOO, it contains 3037 parts and 4 minifigures.

Tree House belongs to LEGO Ideas and CUUSOO, the theme associated with fan-submitted concepts developed into official sets. It is not presented as an external film or television licence. Its subject is a self-contained tree dwelling, giving the model a grounded, everyday scene rather than a franchise setting.

The set includes 3037 parts and 4 minifigures. The build focuses on the tree, the house structure and the surrounding environment.

It suits display as well as open-ended play, because the subject is immediately understandable but not tied to a fixed storyline. Within LEGO Ideas and CUUSOO, it sits among large scene-based models built around a distinctive construction idea rather than vehicles, licensed characters or a standard town building.

Inventory of set 21318

The inventory of set 21318 lists 3,037 pieces, spare parts excluded: 483 different lots (one shape in one color) for 275 part shapes. The box also contains 98 spare parts, for small elements that are easy to lose.

Colors of set 21318

Main color: reddish brown, making up 32% of the parts, followed by black (11%) and medium nougat (10%).

Part types

Most common parts in set 21318

255 of the 275 part shapes in this set have their own page on Setobrick, with their colors, element numbers and the other sets that use them. See all LEGO parts

Exclusive parts in set 21318

One part shape in set 21318 appears in no other set in the catalog, most often a printed element, a sticker or a mold specific to the model. If it gets lost, you will need to look for it individually, for example on BrickLink, rather than in another set.

No similarly sized set supplies more than a quarter of its parts: set 21318 relies on a little-shared assortment.

Size of set 21318 within its line

With 3,037 pieces, set 21318 ranks #7 out of 94 LEGO Ideas and CUUSOO sets in our database, which have an average of 1,279 parts. Among the 459 sets released in 2019, it ranks #6. That is 2.4 times the average LEGO Ideas and CUUSOO set size.