If the tenant uses excess electric you bill them for the excess electric as additional rent. 

To handle the excessive water use in RI I have a statement in the lease that we can charge for excess use (regardless of number of people).

As mentioned, the freeze/thaw cycle combined with moisture can be a problem with it on the front range of CO.  

I would also take a moisture meter around the rooms in possible spots of spraying or missing the litter box etc.

The transfer tax bill you might have to pay on the assignment can be hefty, some parts of PA have a transfer tax in excess of 4% (and using a nominal dollar consideration won't cut it, since the PA Department of Revenue has a formula they use to set the value for which they expect to collect transfer taxes).The broker has kept this as a pocket listing so that he does not have to do a commission split; it's a commercial deal, that's how they like to operate.  

At the same time your builder is right in most cases, adding a garage to a property won't add value to the property in excess of the cost.

We charge rent based upon number of additional occupants in excess of two per bedroom.

Like wholesaling if you in the markets were there are literally thousands of derelict homes and tired landlords and owners its much easier to wholesale there than in Hot markets with with no excess inventory.. there is always deals even in the most expensive areas like SF  Honolulu NYC WA DC etc.. but its not like the rust belt and mid west were bar to entry is quite low as well as home prices.

Provide paid invoices with dates to prove the moisture intrusion and related repairs had taken been completed well within the 30 day mold remediation period.Provide copies of all tenant emails related to their claims.

Driving even more wage earners out of the state.Unless your itemized Schedule A deductions for 2016 were well in excess of $24,000.00 it won't do any good anyway.