This five-story building is set on Pestilence Street to attract the business of wealthy grain merchants as they cart their wares to the silos. Only the first three floors are used by the guild. The others are usually rented out to apprentice wainwrights.

The building is the business headquarters for the guild. Actual construction is done at the Carpenters' Cadre House. Wainwrights who wish to establish themselves in the trade work in rotation. All guildmembers' names are posted on a master list. For cut-rate prices, a wagoneer can receive the services of the Wainwright at the top of the list. As each Wainwright gets a job, his name is moved to the bottom of the list.