Custom Apartments/Apartment complexes/buildings

Having the real option to create our own apartments in the game would be great, though there's already a way to create them now with roommates. Just build an apartment complex, have some roommates and lock the doors so that only the respective residents of the apartment can enter. They'd also pay rent to help with the higher bills (since every apartment is technically yours). I never tried it, I just found this suggestion on reddit and it could definitely be worth a try for those who want to have their own apartments).