The Builders Guild is composed of mostly Nockers who do architecture and engineering.
This guild manufactures most fae structures and its nockers maintain a civil relationship with the Boggans who do most of the actual construction work. In fact, the Builders Guild seems to be the one place where the two kith actually get along. (The boggans have agreed to keep Boggarts out and the nockers don't employ Goblin designers, though the nockers can be harsh foremen.) The Builders Guild is the fae's only reliable manufacturer of flying craft (Nocker Airships, Aether Balloons, and Ornithopters) and ocean-going vessels.