I recently read that 48% of people retain direct mail for future reference.Absolutely you should mail, and mail consistently.

Are you buying a property subject to the existing financing with seller financing for the balance of the equity due?

Would you keep the existing not tenants?

Existing rate/terms?  

Minimum 20% DOWN, Accept SELLER'S EXISTING LOAN TERMS WITH AN ALL INCLUSIVE DEED OF TRUST.

You do not need to record the survey.. just have him locate existing pins.. then eyeball it for yourself.You can also ask for an Alta title insurance policy and that will ensure you for enchroachments etc.

Which means I would have to get a court order and that would cost me 6k minimum attorneys retainer fee. 

there are little quarks as well, that only a trained eye may see, the process is easy if you are in a subdivision with 200 relatively equal homes, it a bit more tricky and subjective in rural America, where comps my be fare apart, and no similar sales exist for 12 months ore more, then your gut has to know. its 1 part science, 1 part math, and 2 parts Market Knowledge 

Create a list of questions that will determine with the existing clients  if the company is meeting expectations of their client base.  

Help find a replacement tenant or allow the existing tenant to break lease and move out.