These colonies you refer to are built on literal and figurative sand with shoddy regulations.
https://timesofindia.indiatimes.com/city/bengaluru/bengaluru...
> Bengaluru water crisis: Plush society asks residents to use disposable cutlery and wet wipes
https://www.thehindu.com/news/cities/chennai/floodwaters-cau...
Traditional Indian houses are SFH like US homes.