To close the loop on this post, I went with the lowest reputable bid in SWAT Environmental out of Centennial and am happy with the results.

Lower class people are those who allow bad elements to control their life. 

Attorney's Fees: If any party files any action or brings any proceeding against other arising from this agreement, or is made a party to any action or proceeding arising from this agreement, the prevailing party shall be entitled to recover as an element of their cost to suit and not as damages reasonable attorney's fees to be fixed by the court, arbitrator or adjudicative authority.

Although water / environmental risks could be problematic. 

Note that any time you open up the house to the elements a permit is needed.

Just off the top of my head:Physical ThingsProperty inspection  (should have professionally inspected)All major systemsElectricalPlumbingHeatingRoofStructuralEnvironmentalEtc.Property conditionTenant ConditionProperty LocationNear noise / environmental factFinancial / PaperworkLeasesDurationRent AmountLate FeesCondition reportsTenant applicationsBasic Contact infoEmployment infoEmergency contact infoEmailTenant Estoppel StatementInsuranceProperty Tax statementWell, there is a quick start.  

@Ryan Gillette has an excellent tip on financing the deal via Freddie Mac, coupled with a question about your exit strategy if any at the end of four years.To be more successful, you simply have to work on the other elements to progress your REI pursuit.

To be more successful, you simply have to work on the other elements to progress your REI pursuit.

To be more successful, you simply have to work on the other elements to progress your REI pursuit.

That also introduces an element of risk for the buyer because funds are not being held by an arms length 3rd party.