Marble backsplashes, all new kitchens, bathrooms, HVAC, electrical, refinished hardwood flooring, etc, all with the idea that we would get better tenants, higher rents, lower vacancies, and less maintenance/repair requests. 

Having 1-2 go-to vendors for the highest frequency problems… plumbing, A/C, septic, electrical, and roofing, I can pretty much make a 2-3 minute phone call and pass the problem to someone who will solve it with little more input required from me.  

Peeling paint, inside or outside, handrails on stairs over 2 steps, broken glass, working electric and plumbing and operational heat source. 

They all have their own separate oil tanks/electric meters etc. and there is well water.

We added a door that we deadbolt to separate our side from the airbnb side, and I had to have some electric outlets and an overhead light to the airbnb side, but other than that everything was updated already and we just had to furnish the property which was really nice and made the process pretty easy. 

@David De La Torre it is common for electric and gas to be turned off when a tenant moves in, forcing them to turn it on in their name. 

New roof, new water heater, new Electrical panel, New HVAC, new Concrete driveway, new Concrete steps & walkout basement, Open space of kitchen and living room, fully finished basement with wet bar and new full bathroom, new windows.

I love the idea of renovating your carriage house - does it have any water and electric hookups already?

As far as positive ROI - I'd like feedback on the following items:-Switching to tankless hot water heater (current water heater doesn't look so hot)-Upgrading electric panel to a Span Smart Panel.

This will cover the unit’s condition, including plumbing, electrical systems, and any visible structural issues.