The Builder’s outfit in OSRS is mainly a quest/cosmetic set from Tower of Life, not a training set. Wearing any piece enhances the beckon emote, but it does not give Construction XP or a skilling bonus.

What it does

  • It consists of a hard hat, builder’s shirt, builder’s trousers, and builder’s boots.
  • Any piece worn changes the beckon emote.
  • After the quest, the set is optional and can be stored in your costume room.

How players use it

  • Mostly for the Tower of Life quest or for collection/cosmetic purposes.
  • If you lose it, you can obtain the pieces again from Tower of Life-related tasks and crates.

Quick answer

If you meant the Builder’s outfit , it doesn’t boost Construction training; it’s basically a quest outfit with a small emote effect.