I would also include in the lease the need for bi-annual inspections of the unit (I call them safety inspections to check smoke detectors, carbon monoxide detectors are working, for example).- Resolve to always act like the professional you are.

Currently I;Get a signed leaseGive them a lead-based paint disclosure or email it to themMake sure there are appropriate smoke & CO2 detectors and have a signed form.

Tell him if he tampers with it again you will be forced to terminate his lease.Heating, cooling, fire, smoke, carbon monoxide and ventilation systems etc. are part of the basic operating systems of a home designed to protect the structure.

Absolutely no smoking of any type indoors.

And then, only if the reason you are suing has to do with money.The baby daddy moves in, they park all crazy blocking other tenants, there are knock down drag out fights and the cops get called, they smoke cigarettes in the unit against the rules and drop cigarettes all over the carpet, resulting in burns everywhere - or a burned down apartment building, on and on.  

I used to be an onsite manager less than 6 months ago in CA so that would be my feedback.the other stuff is not that important, it won't net much gain in rents.your annual maintenance is critical on each unit  - caulking, changing flappers and batteries on smoke detectors, co detectors and changing air filters.

Does anyone smoke?

So, in other words, you give 30 days notice that smoking is no longer allowed on the property, or that pets will no longer be allowed, etc.Some things require more notice, depending on where you are.  

Check to make sure all the smoke detectors and CO detectors are working.

My lease states (removed the parts not at all applicable):Deductions:(a) damages to the Property, excluding normal wear and tear, and all reasonable costs associated to repair the Property;(b) costs for which Tenant is responsible to clean, deodorize, exterminate, and maintain the Property;(f) unpaid pet charges;(q) cost to restore walls, flooring, landscaping or any alteration to the Property not approved in writing by Landlord; and(r) damages to the Property caused by smoking, including but not limited to stains, burns, odors, and removal of debris.Here's a photo of one of the door frames, for example.