Both of our medical needs (and costs) have resulted in us needing to sell our house.

The LL is wanting to charge them back for the cost of bringing an electrician out to resolve the matter. 

The amount it would've cost us to make it a duplex wouldn't have made sense for us to  go back and make it a SFH.

Keep in mind that some of these obnoxious transfer taxes are not considered state or local taxes for tax deductions but rather increase the basis of the property as part of acquisition costs.

If you were to buy a $100,000 home you would need $10,000 + closing costs to close.

I gave the tenants the option to either maintain the lawn themselves or to have my lawn company maintain it at an additional cost in their rent.

Again, I'm not local so I'm just taking every cost and push-back on progress at face value.It's $80 per door, per year, plus the one time inspection fee, which I was thinking was $180, but don't recall exactly right now. 

We had to replace all of the carpets with wood, costing us over $5K.

If your operating costs are below the market, your NOI will likely be matched closer to the appraisal's market rents.

It's a cost of doing business.