I have doubts about his experience in RE, which I believe may be common among CFP. 

Is 21,000 common for these jobs?

You would have to create an HOA to manage the common area and keep control of that or create a self-managing HOA for the four owners to manage together.

Looking to invest in a few properties over the next 5-10 years and want to get a sense for tenants, common issues, etc.

I enjoy helping new investors avoid common pitfalls and use loopholes to build their REI portfolio.

I'd recommend a "Templates Folder" that has templates for common used docs like leases, notices, advertisements for properties.I actually just did full video on my Google Drive set up over on my YouTube channel :)

But, of course, they found something to send me a written notice over.It was a handful of small stuff, no big deal.

It is common for PMs to stick fees into paragraphs throughout the agreement, this is another red flag.

It was common back in the day.

Well said Jordan, it's not as common in this market to have an ADU but there are some out there.