How Long Does LEGO® International Space Station (21321) Take to Build?

A typical builder finishes LEGO® International Space Station (set 21321, 864 pieces) in about 2 hours 15 minutes. Taking it slowly runs closer to 3 hours 5 minutes; building at a fast pace, about 1 hour 45 minutes.

PieceTick estimates build time from piece count, part complexity, the set’s age rating, your experience level, and how you sort pieces. Adjust those on this page for an estimate matched to how you build.