LEGO Architecture 21023 Flatiron Building

LEGO set 21023 Flatiron Building, released in 2015 as part of the Architecture line, has 471 pieces. Its inventory breaks down into 52 different lots, across 7 colors.

Inventory of set 21023

The inventory of set 21023 lists 471 pieces, spare parts excluded: 52 different lots (one shape in one color) for 37 part shapes. The box also contains 9 spare parts, for small elements that are easy to lose.

Colors of set 21023

Main color: tan, making up 46% of the parts, followed by dark tan (23%) and light bluish gray (14%).

Part types

Most common parts in set 21023

36 of the 37 part shapes in this set have their own page on Setopedia, with their colors, element numbers and the other sets that use them. See all LEGO parts

Exclusive parts in set 21023

One part shape in set 21023 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.

Rebuilding set 21023 from another set

Share of the parts of set 21023 found in each of these similarly sized sets, counting shape, colour and quantity:

No similarly sized set goes above 34%: the model relies on a little-shared assortment, most of which has to be gathered piece by piece.

Size of set 21023 within its line

With 471 pieces, set 21023 ranks #40 out of 64 Architecture sets in our database, which have an average of 846 parts. Among the 448 sets released in 2015, it ranks #89.