pss: I meant how many one room and parlour (self contain) can sit on one plot

Instead of building room and parlour with common facilities, I thought above will be a better option

I’m thinking of ground floor building only not up and down building

Can 4 units on the ground floor sit on one plot?

Please advise

pss: Thank you samual

So 6 units of one bedroom terrace bungalow will sit on one plot of land (60 x 120)

So like how much will complete the building to commerial level