Members of this guild design buildings and draw the required blueprints for all new buildings in Waterdeep, and all renovations which change the height of a building or add to its outside extent. It also does all the necessary surveying in the city, except for private building sites and road construction and repair sites.
The guild maintains, at the Map House, a large and ever-growing collection of maps and nautical charts, which they will purchase from any who offers good specimens.