This is a revision of my old post on this timely topic.

When faced with scenarios like this, it's tough to answer such a specific question with limited information. 

What made you interested in investing in this type of deal?

This was for a $15m+ commercial transaction.  

The city wants to tear the property and surrounding properties down Zillow said it’s worth 38000The city offer me 13000.I could use some adviceHard to give advice with limited information, but as a general rule, the longer you wait and the further down the line their project is the more valuable your property will be to them.Zillow (and all automatic online) estimates are very unreliable, so don't base on that.

Lots of good information and entertaining too. 

This isn't inclusive but should give you a good start.

@Dwight HenningRecommend 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.

A simple example I have used before illustrates this point.  

I know I might be out of your area, but I’d be more than happy to share any resources or information you might need.