Another architect in the gaming… er, game? We are brothers!
And yes, like a pure 1:1 rendition of architecture to gaming is impractical simply because it means ranges will be off the table just for starters. But like Rhoderic says it can definitely go some of the way without having to go all the way and land you with a more visually “believable” result.
Urban buildings are super gigantic things. Cities likewise. And then there’s an issue of whether you’re doing a city fight at close quarters or modeling “urban terrain” to just indicate an undifferentiated built-up area, which is a whole different challenge. A scale skip is about the best happy medium I’ve found so far. Use 6mm buildings for 3mm figures, or 10mm for 6mm figures, 15mm for 10mm figures and so on.