How Long Does LEGO® United Nations Headquarters (21018) Take to Build?

A typical builder finishes LEGO® United Nations Headquarters (set 21018, 597 pieces) in about 1 hour 30 minutes. Taking it slowly runs closer to 2 hours 5 minutes; building at a fast pace, about 1 hour 10 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.