REI investing for almost 20 years, owning a wealth management company for 22 years, suffice it to say there has been a lot go data/spreadsheeting/tax analysis/meeting with my team go into this overall decision to sell the entire portfolio at once.  

They are a reputable company. 

@Stacey OlsonRecommend exploring as many sources as possible to get referrals AND cross-reference them to get as much accurate information as possible.Check out NARPM.com, BP’s Property Manager Finder (BiggerPockets: The Real Estate Investing Social Network), etc.Also, encourage you to learn from the mistakes of others - by reading posts here on BiggerPockets about owners not having their expectations met by their current Property Management Company.

Always ask your agent to ask the listing agent which title company/closing attorney that they are working with.

Just looking to trade advice.

Reason being, I hired a property management company (just now) and they're wonderful, they start officially in a couple days. 

Or suggestions for other companies that provide a similar service?

Or does one need a special license / need to open a company?   

I currently work remotely as a Manufacturing and Quality Manager for an AI infrastructure company based out of the Bay Area. 

If you want the name of the agency we use, message me I don't think we can promote a company here that isn't a BP sponsor or Pro etc.Hope this helps.