I printed it on a Craftbot+ using some local red filament. I spray painted a base coat of grey, than used 3 different shades of gray to paint the brickes individually. After I used diluted brown wash, various brown, yellow, maroon spray paints and finally white and black dry brush at the end the highlight details. I did seal the final model with clear lacquer.
I glued the based, first floor and stairs permanently together. Rest is held by magnets are originally intended.