The value of the property will have drastically increased (from previous to new property value based on the GRM factor) and you will able to pay off the lenders and walk away with a substantial profit that can be reinvested elsewhere while maintaining the property and rental cashflow...

If I had a choice of being on Municipal or well and septic, I will take well and septic any day, the Well is little maintenance and no bill and with exceptions, generally you may replace a pump and piping every 50 years or so unless lightning whacks the pump, still a pretty cheap fix,  septics, in WI require pumping and inspection every 3 years ($150-$300) and if maintained will last 20-50+ years and depending where you are and soil type replacement would be $2,500 to $20,000 I can get a 1000 gal (3 bedroom) system replaced up north in sand country for $2500, in clay its more as often you need a mound.

So easy to maintain.

One of the things I try to do is make sure the lease includes the tenants responsibility to maintain the lawn.

I'm curious about my situation - I have several Utah properties, would it be possible for me to get a commercial heloc over my portfolio of properties, while maintaining the first liens with my current residential lenders?

Doesn’t seem like enough gross rent to have enough money to maintain a home.

DO NOT hire or maintain business relationships because you think they are nice & friendly.

I'm going to give you some advice, but you aren't going to like it;  You aren't ready to invest.With enough knowledge there are ways to obtain control of properties for little or no money, however there is not a single way to maintain control of that property without spending money. 

Maintain solid relationships with our bankers, accountant and lawyer.

I will still maintain my real estate business but having another stream of income is enticing.