Hopefully excel to allow slicing and dicing of the data.

Although our partnership worked excellent for several years – AND were still friends, I’m not big on JV or partners but I appreciate the idea. 

Could anyone recommend a lawn maintenance company in the area that is credible and yet not overly expensive?

@David Marsceau Excel is probably the go-to for many people but I can only speak for myself.

A good provider will give you an Excel sheet with the owner's info, property address, owner's address if different, CLTV, loan position, foreclosure date, trustee info, etc. 

If this is an older property (1950s or older) then it may be on clay sewer pipe which is prone to crack over time ... also if there are mature trees or vines out front, those roots have a way of finding nutrient sources, and sewage is excellent fertilizer ... so a small leak can turn into a big problem if filled and expanded with roots.

because if I use the 50% rule ( i know, it only for quick looks) or I use my excel sheet.

I wish you the best in your future endeavors, sounds like you're in an excellent location and off to a great start.

Doing a "Goal Seek" operation in Excel can get you to a price that makes sense for your business model.

@Dahl Brandon I hard some good things about Michael Blank's excel.