Directory need built to sell cars, locations, etc

Hi I need a few quotes on 2-3 different layouts utilizing this theme. Trying to figure out if I can get all three on one domain but each their own individual map/ not combined (I have 3 urls if needed but would like to avoid if possible, can this be done via sub-domain?)

1 – to sell cars/ trucks
2 – to host locations of houses, campsites etc
3 – to host locations of jobs

each can have the same look etc, they just need a basic swap on the functionality of each topic if that makes sense.

Can be the supreme directory of the framework, lmk if you have any better ideas and a cost plz, thanks!