I would say research is a lot easier when you are looking to confirm an answer rather than find one.How I determined that the info provided by a “random” is true:The gentleman that answered my question seems to be a CPA with his own firm and 25 years of experience (unless this is an elaborate hoax with no apparent end game). 

I worked with an agent and then joined her firm.

You'll want to enlist a CPA who specializes in real estate, trusts, & flow-through entities (this is a somewhat rare combination to find in a small/single-member firm, you may want to look at a larger regional firm to assist you if you can't find anyone who suits you at the smaller level).

Hello Matan, I am with a property management firm that is nation wide operating in 30 different states and 60+ different markets.

I own five doors and am the managing broker of Uptown Firm, a boutique firm that focuses on real estate investing and development.

We as a firm have investors working with us who have rental properties all over the US big and small.Finding a real estate-focused tax professional and one who can help with advisory and grow with you would be my suggestion to focus your efforts on finding.

(often just job site clean up, or hauling boards or drywall around the job site) with the stipulation that the tradesmen would show me the tricks of their trade.

There are many scenarios can played out from here but a good wholesaler would negotiate respectfully and still stand firm on their ground.

My advice would be to politely but firmly communicate your need to have your contractor inspect the property, and emphasize that this is a standard practice for you.

Most loan officers don't stay in the industry long-haul, so most won't want to front you $ for licensing.