Engage professionals to inspect major components such as the roof, plumbing (including sewer lines), foundation, drainage, electrical systems, HVAC, chillers, boilers, termites, exterior walls, balconies, stairs, rails, and concrete.

Example of overcharges included* $300 for cleaning windows and cabinets after entire house was professionally cleaned* $80 to replace HVAC filter after entire HVAC system was replaced* $700 for a small list of punch items - 2 door stops, raking backyard, removing satellite dish in backyard and trimming bushesAfter terminating relationship, owner decided to send a termination charge for $450 (contract does stipulate it) - even though the company has not done squat and never placed a tenant and already charged so called 'set up' fee of $300..

There is always the risk that after you do the repair, the the system fails quickly after that. 

We are developing a system in my office called "T.R.I.P"  which stands for Tenant Revitalization and Investment Program. 

What goes on with my system,  is that people are determined to sell to me, even at a huge discount.

Some want experience and some want a crazy payment upfront for their system. 

Looking to link up with a few people to chat systems, whats working / whats not, planning for future business model changes etc.

Just a lot of systems, paperwork organization, and staying abreast of/within the law (required notices, addendums, etc.).3) The screening criteria we use:650 credit score or aboveIncome 3x the monthly rentNo pets (depending on the property)No smokingNo evictions, notices to comply, or money owed to landlords in the past 12 monthsProof of income and financial responsibilityAdditional:First, last, and security deposit due at signing750+ credit score does not require last month rent (helps incentivize quality tenants)Best of luck!

My CPA requires Quickbooks online and it seems there isn’t an easy way to do the data entry and allocations and keep those two systems inline with all the transactions.  

As long as you have your due diligence you are as good as buying a property that doesn't say "as-is".For question 2: The biggest "scam" is tenants not paying and milking the system.