Specifically it needs some old wooden windows replaced with energy efficient ones, an HVAC overhaul, and gutters added.

Have also had a few window replacements.  

I tried letting pets come and have pee stains on the rugs, so I stopped allowing themI have replaced the floors in 3 of my Short Term Rental homes to waterproof vinyl planking, so I am now considering allowing them again.Please help me decide Pets or No Pets- Tell me some of your findings with pets.How much extra do you charge per pet?

But with old homes, unless they did a relining or replacement though, expect the pipes to be old.

You have multiple old furnaces that need replaced.  

Every once in awhile you may have to replace the roof or heater. 

So often they break within 1-2 years and my cost to replace and install a new appliance is much higher than it would have been if I installed a new mid-tier option to begin with. 

My area it is $6 sf to replace with a moderate lvp. 2400 sf*$6 sf=$14400. $14400/10 year life span/12 months in a year=$120 per month for 1 item.

It certainly is a lot cheaper than replacing countertops.Of course, you have to gauge the neighborhood and the property.  

I’m looking for someone or any recommendations on someone that can come out and swap a electric water heater for a new one in the douglasville ga area outside of Atlanta