Ventilation may be inadequate and moisture may accumulate indoors.

It's cold out tonight, while most people sleep indoors with a meal in their stomach, the homeless are outside (like animals) many cold and many hungry.If you want to make things better in your town, maybe donate cash to the Homeless shelters and Homeless feeding charities.It might give you more bang for your buck.Just my 2 cents. 

We are really close to the bike trail so our plan was to have a large indoor closet with mounts to store bikes as an example.  

Am I able to institute new policies such as no smoking indoors, snow removal, restrictions on pets?

. - Indoor sprinkler plans with hydraulic calculations and manufacturer spec data sheets.

I just put in a new slab on an old jam which required a quarter inch reduction in door width to close properly.

Furniture stored and used outdoors should be outdoor furniture, not indoor upholstered items.Steps (front and rear) and sidewalks: should be clean, and free of hazards.

At the very least, I would encourage them to smoke outside...or eat, not smoke.Ohio does have a ban on indoor smoking, so if your property has a common area or hallway, you are under the jurisdiction of the Ohio Department of Health...this means other tenants can file a complaint and you are responsible...fines to $5,000.

Piggy-backing on something @Bruce Woodruff touched on, Pet's 100% do damage to a property 100% of the time, there is NO IF, there is impacts from a indoor pet.

Some people look at this as a pain for them when they have to make repairs BUT I think it also reminds the tenant that if they want to stay in the program they can't be growing weed or running a pit bull breeding operation indoors because they will get caught as well. - The rent really does come in every month on time like clockwork. - If you do this with a larger bedroom count home (like 4-5 bedrooms) you can make some good money.