This will give you insight into their financial health and stability.Look for any red flags, such as high debt levels or irregular financial practices.Understand Their Underwriting Process:Inquire about their underwriting criteria and process.

Testimonials are a huge red flag to me as they are difficult to verify and could be paid actors etc.

It felt like Tyler was in his ivory tower in Hawaii and too busy to waste his time with students after he gets us signed up.

Requiring a wire is another red flag. #1 seems relatively normal

We didn't expect the fact that insurance should cover short term rentals but raises a red flag for lending during the 30-60 day period after closing where they make sure you're not using the home as a rental.

A wholesaler contacted me about this house they have under contract for $205,000 that they want to close on within a week for $220,000. The house is in my hometown, I'm very familiar with the area. The house is easily...

HUGE red flag. 

Just keep in mind zoning and code requirements. zoning is usually not a problem, but when a commercial is converted to residential current codes must be met which usually means two stair towers, fire separations, and sprinklers.PS: Loopnet is what I used to find my warehouse.

Negotiating a security deposit amount is not a red flag for me, especially with over $10K in estimated moving expenses (professional movers) and move-in costs (1st month and security).

Unfortunately, you ignored multiple red flags during the vetting process and now you're paying a price.