Yeah its homemade, but its quite easy:
Everything I used is found in the Saloon PDF, I just printed some stuff more then once:
The Balcony i.e. is made of two Balconys with one cut in half and glued to the ends of he other, same with the walkway.
The Roof is also simple: Just print enough pages of roof to cover the whole Saloon, lay them in Line with the Saloonfront and and cut off where it reaches over walls.
The Walls are made of 4 Walls (2 normal, 2 shortened ) and the Front: