I just finished the design / construction management of 45 low-income units here in Redding, Ca at a cost of $222k per door.

This is seasonal and easily removable Red Devil 0606 Zip-A-Way

We took some of that money and bought 100 acres with water rights and a lake off Red Prairie (between Sheridan and Dallas OR). 

That being said, the code enforcement or city inspectors will Red tag a project if it is not being done correct.

There are significant costs, time, and red tape involved.

The lot is "Flag Shaped" meaning that this rectangle of grass is connected to the main street by a thin driveway that's about 25 feet wide (ie. we have 25 feet of frontage with the main street).

The video with ten red flags you talk about people that want to plant gardens or flowers being a red flag.

I remember having a brick fireplace painted and they painted it bright red, very odd looking, our normal spec was grey but we didn't do a full scope as it was just a minor rehab, paint and carpet. 

They are looking to break their lease 3 months early (red flag) for a bigger space as they work opposite shifts and live in a small two bedroom. 

Anything above $1500 rent is cash flow so obviously, anything below $1500 is breakeven or loss.The market is red hot.