I got a couple in my own portfolio that I also manage (I have a management company).

The management company stopped sending statements and stopped paying me rent at some point. 

It may sound nice to pay a 6% management fee but the extra fees can add up to be more than the other company that charges 10% with no additional fees.

(They claimed thousands for electrical using what appeared to be a fake electrical company, and they never had someone out to even check electrical beyond the general.) 

Interview reputable property management companies.

About 3 months have gone by and we just received an email from a communications company billing us $4,000 for breaking a communication line buried in the yard.

They highlight the difference between the average home cost and the average home value suggested by the price of large institutional companies such as American Homes 4 Rent and Invitation Homes Inc.I suspect this is nonsense (especially as according to google their price to book ratio is positive). 

Our office houses realtors, wholesalers, mortgage companies, contractors... 

Sent another tech from a different company to get a 2nd opinion.

Plus, you get huge appreciation here based on how many companies are moving and developing here!