Quick question

There was a great fuss when they were available, everyone generally loving them. If memory serves, they were not in the crafting menu untill later in the event, after completing something or other.
https://i.imgur.com/mm6slXv.png
https://i.imgur.com/68gXpZm.jpg
https://i.imgur.com/4aarEOZ.jpg

Just so you know, these houses are decorations only. They don't generate income.
That being said, I have several of them, love them.

they were from an event. Someone with a better memory than me will fill you in. They may have been listed as slums?

multi colored slum graffiti buildings? those were around the world event, brazil.

Ah ok hopefully they will bring those back and yes those were the ones I saw.

If they are purple or green buildings then think that it was the radioactive man super hero event.

I looked in my town. They are labeled painted home. So I looked that up and thy are from the airport event "Destination Springfield"
https://static.simpsonswiki.com/images/f/f5/Painted_Home_1.png

Ok I saw those and thought they were pretty cool.