Need help making slum district

I’m planning to build a slum area in my Minecraft town and I want it to feel believable rather than random or stereotypical. I’m looking for tips on how to design the layout and details so it looks like a place that actually grew over time.

Things I’d love advice on: • Block palettes for run-down or improvised buildings • How to lay out narrow paths, crowded houses, and uneven terrain • Details that make it feel lived-in (clutter, utilities, lighting, etc.) • Common mistakes to avoid when building slums in Minecraft • Reference builds or real-world inspiration that translates well into MC

Any tips, screenshots, or links would be super helpful. Thanks