Construction is mainly CMU, Concrete, and Steel (at least for my projects), and there is a bottle neck of those resources as only few supply the area.

If you google the Wyoming address it is an attorney's address who specializes in setting these companies up and is a mail forwarding service not a "real" office with staff, owners etc.In the one investment document I read, your investment would be in a construction company with no assets and secured only by a UCC filing.  

I'd be more worried about supplies to build houses (eg wood for the framing). 

For example I have an account for each property and a sub-account just for the security deposits for those properties.

Toward the end before closing, they gave bunch of excuses like security breach in their company, don't like the file and the property.

If the agent is doing the marketing, finding the potential buyers and possibly working with other agents to help you secure a deal then I would still charge 2.5% for my listing services and 2.5% to any buyer's agent. 

What do you do to ensure that the tenant is responsible for security deposit disputes since that is the largest reason for owner lawsuitsHow familiar are you with the newly changed laws that can affect you the owner if they are not used correctly?.

Quote from @Michael Smythe: Besides MANY self-labeled "gurus" exaggerating their success, many of them just supply readily available info.If you're too busy to find the info and are willing to pay for it, no problem as you accept their time vs money solution.REGARDING S8 GURU ISSUES SPECIFICALLYMost of them don't share all the facts about how Section 8 actually works.They claim you can get HIGHER rent from S8 tenants vs private-paying tenants.Why would the government allow our tax dollars to be spent this way?

We have been fortunate to rarely hold any security funds from former tenants.

Since they are responsible for maintaining the relationship with you after the transaction closes, this approach adds an extra layer of confidence and security to your investment.If you can't find an investor agent that you like or trust that is also a Property Manager or works under a brokerage that has a Property Management Division, I would ask the agent if they recommend a Property Management Company.