Great way to pick up some good info and possibly a deal.I have listed below some Rules of Thumb we use.Good luckPaulExpensesTaxes  (80% Purchase Price) x (Mill rate) = TaxesInsurance $250 per door (this could be higher, depending on if property is closer to coast, the claim history, if in flood zone, etc)Repairs & Maintenance (R&M)  $300–$600 per door Contractors and material, Carpet Cleaning, Keys and Locksets, Make ReadyGeneral Administration  $100-250 per doorManagement Fees Typically 4% of Total Income for larger propertiesMarketing/Advertising $100 per doorUtilities Take historical from last year, annualize this year’s, compare & then take the higher of the two. 

The first was going over the Law's specific to MA and the second was more of a hands on course that provided you with a rental package that had all the materials needed to legally rent in MA.

Now if you are wanting the seller to provide actual invoices for their material cost and also what they were paying the contractors etc... things like that you might not get that. 

Much of it is selection on your part and properly sourcing material (I can help with this) and labor.

I want to know are there any research materials or real estate journals I can get that will give me up to date information on trends or statistics on a given area ??? 

I think it was a combination of both spending too much for Contractor and level of materials.  

I was planning on just making draws for the material and other sub contractors (plumbing, elect, etc) and then taking the profits upon the sale of the house once complete. 

Would anyone be willing to share some of their rent-to-own specific marketing materials they use in direct mailer campaigns?

Calculate all of your material cost from actual prices online.

There was a pretty involved test that you had to take too so find some good study material and study up.