@Bladimir AngeliWell - first thing would be to get some experience evaluating deals. 

@Curtis CurleyHey Curtis I'd guess you have significant risk of effectively evaluating a contractor and building the trust and effective relationship to get through a project together.With that in mind, I'd prepare to buy something where you can get hands on with any needed value add / repairs. 

Recommend the bigger pocket tools for evaluation of cash cow. 

Obviously in order to do a thorough evaluation, a seller must provide you with T12 (prior year financials) and the rent roll.

Foundation problems should be evaluated by a licenced Structural Engineer/Specialist. 

If you haven't come across AirDNA (www.airdna.co) yet, I'd recommend checking it out - seems like a very well-designed tool for evaluating STR markets.

Can anyone offer me any advice on the following:How best to evaluate a fair price?

I'm evaluating 2 mobile home parks.

These numbers are totally a model, but you can evaluate each component based on the relative risk in your situation.Regarding eviction, I would recommend starting it sooner rather than later, especially with inherited tenants, who will challenge you until you demonstrate control of the property. 

Offer to sign an NDA agreement (very standard) to get a look at the real numbers, so you can evaluate what a fair offer looks like.