Their property sat vacant for a few months while their guy "saved them money".

I have cheap guys who do it 1/2 to 1/3 what you pay if call someone off Yelp.

There are two reasons this is a bad idea.Investing with an SDIRA (assuming it is not a Roth) will often result in paying significantly more taxes. 

I wanted to see what these guys were up to, so I pulled up in front of a house where it was parked, on Arquilla Dr, got out and knocked on the door.

Quote from @Willam Mendez: Hey guys, just wondering if anyone knows of any HYSA that are used for Business or any other Business account that will give me a high Yield? 

Will look to get construction guy in to view it.

Do a toilet bowl test , put food coloring in the toilet tanks and check for bad flapper valve . 

It may also deter other bad behavior.

We are only selling completed homes with our own in house financing currently at 3.75%, a huge discount from most bank rates.We are a long time property provider for some of the bigger podcasters: Real Estate Guys Radio, Marco Santorelli (Norada), Kathy Fetke (RWN) Jason Hartman ( Empowerd Investor) GRE (Keith Weinhold), Whitecoat Investor Group and more We also work with American Homes for Rent, Invitation Homes, Crescent, Haven Realty (JP Morgan) to name a few on the institutional side We are partially owned as of 2022 by Sumitomom Forestry, which means we have no bank debt and self fund all our building projects.

I am probably the guy you want to talk to as I am a Realtor here in Colorado Springs who primarily works with investors, many of those who flip properties.