The best place to go to search for good property manager National Association of Residential Property Managers. www.NARPM.org
You are able to search for members in your local area and then look for members with designations like Residential Management Professional (RMP) or Master Property Manager (MPM). These are property managers that are cut above the rest, and the ones that can be trusted to provide quality service and care for your investment property.
Also another designation to look for if you can find it is a company that has there CRMC designation. There are only about 50 management companies that are Certified Residential Management Companies. (CRMC).
These are companies that have been audited by the National Association of Residential Property Managers and have demonstrated a high standard for both procedures and customer service.
Google, yelp, and even the Better Business Bureau is not necessarily an indication whether a company is good or bad.
I have 12 complaints with the Better Business Bureau and I have even met and talked with one of the managers for the Better Business Bureau and show them how ridiculous the complaints are.
I had two tenants file complaints because I charge them for clogging the commode. I would not have been doing my job if I did not charge the tenants for clogging the commode.
I had one tenant file a complaint because we did not approve his application even though he was currently going through an eviction.
Just had one applicant the other day place a bad review on yelp saying how she has this great rental history, when she is not on the lease agreement and the property management company will not give us any rental history on her because she is an unauthorized occupant.
It is probably wise look at the BBB and Google reviews but you have to take it with a grain of salt because, it is usually owners or tenants that are unhappy that take the time to post negative reviews even though the management company has performed flawlessly under the agreement.
I know one top property management company as an F rating on the BBB even though they are a good management company.
We currently have an A+ rating but that can drop at any time is the BBB does not look at the validity of the complaints they just go by the number of complaints.
Again, I believe the best way to find a good property manager is to seek a property manager out and has invested in advanced training and education and has attained designations, usually they also have years of experience.