Other lengths are for possession and monetary damages.

How did she suffer damages/monetary losses by your renting a smoky house to her son? 

A bankruptcy judge can impose sanctions beyond the monetary amounts of the actual loss.

Sure, you can sue them for monetary damages after the fact, but that's it. 

Tenant shall be liable for any monetary and non-monetary breaches of this Lease caused by Tenant's sublessee or assignee. 

In that situation I would not have given him a monetary concession but would have tried to get it fixed a little quicker.Tenants will push you.

Here are some key points others made:- Ideally the tenant will fund half or more of the cost - You do not want the tenant to do the install - Link the improvement to a new or extended lease - Make it clear in writing that the improvement stays with the property and she is not entitled to any monetary compensation when she leaves.

Even if it's not all monetary gain - but peace of mind, knowing you have a renter you can count on now.  

But, if you understand the monetary system, which clearly tells you to borrow, how do you reconcile it with the common sense of personal finance, which clearly tells you not to borrow...?

It should be a monetary slap in the wrist....a nuisance, not an opportunity for profit.Also, circumstances can play a part.