1. Add roof shapes

    Closed
    #109695632 0 1 0 0

  2. Add building and roof levels

    Closed
    #109695631 0 1 0 0

  3. Add building types

    Closed
    #109695490 0 1 0 0

  4. Determine whether construction is now completed

    Closed
    #109695489 0 1 0 0