I was burned on my first deal by the bank in a similar fashion.

And I have looked at AirDNA as well as old fashioned VRBO/Airbnb scouting. 

These are hardly any real connection, but I have the tendency of trusting people who share things in common with me.

@Yi ChuThe tried and true, old fashioned, way is to keep a notebook in your car as a mileage log. 

You could find a buyer the old-fashioned way.

I was wondering what you guys use to keep track and mand cost of equipment, materials and labor.I'm debating whether I should use a good old-fashioned excel spreadsheet or if there's an app out there that can assist with us

If it is a privately held company, you can submit request in similar fashion.

Past payment history is indeed a strong indicator of future payment tendencies.

I own a website design firm that also focuses on the Contracting industry, and have worked with clients ranging from multi-billion dollar tech companies to fashion labels and small construction firms. 

The only thing I'll add is that if you're going FHA, you'll need a particularly creative/aggressive lender if you want to use FHA multiple times in this fashion.