Reach out to some smaller oil companies and put some feelers out.

Sure you'll get some efficiencies of scale, but that will also depend on the nature of the property.

Changed oil heat which was paid for by landlord to gas on separate meters.

That said, a lot depends on how much time has passed since the set up and other factors like natural disasters, drainage etc.

Nature of the beast, I am sure most property investors have had at least one bad experience, its how you deal with it that matters.

Seller financing is highly profitable as long as the buyer stays paying that high interest loan amount, but the natural way of things is that they will try to refinance with a bank as soon as they can which eliminates the rest of your profits. 

An idea I had was to add an appliance care/ granite care addendum to my leases which give average costs of replacing SS front pannels of appliances that will be billed to them if they dent the stainless facia, what NOT to put in the dishwasher, and how to care for granite and what types of chemicals/oils are not granite friendly.

If the door is unfinished on the outside, go with an oil based sealer/primer like Kilz and an oil-based semi-gloss or gloss exterior paint.

I am doing LVP in the kitchens and hallways (natural wood look in darker tone), white kitchen cabinets with stainless appliances, and have painted Agreeable Gray SW throughout.

Squeaky wheel gets the oil.