How Long Does LEGO® King Boo and the Haunted Yard Expansion Set (71377) Take to Build?

A typical builder finishes LEGO® King Boo and the Haunted Yard Expansion Set (set 71377, 431 pieces) in about 1 hour 10 minutes. Taking it slowly runs closer to 1 hour 35 minutes; building at a fast pace, about 50 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.