I'm working on a project of a multifamiliar building and we've chose Option 2, Case 2.

It's prohibit to smoke in all common areas, except on a specific area more than 25 ft from entries and openings, and we're going to make a blower door test to demonstrate the acceptable sealing of residential units.

But we understood that it's also necessary to prohibit smoking inside the appartments, is that right? It's really difficult to control and assure that the tenants won't smoke inside their own properties.

If we garantee that the appartment is well sealed, it's still necessary to prohibit on-property smoking??