Is it true that in order to do a 1031 exchange I would need to identify a multifamily property worth at least $156,500?

We have used companies like InfoUSA and other list generation sources in the past, but found that we had a hard time finding the owner directly and ended up speaking to a lot of property managers etc. which wasn't particularly effective.Does anyone have any ideas of companies or processes we can employ to help us identify properties and then get in touch with the true owners of the building?

Then you have to identify your target audience on the front end.

IE assigning contracts.. you simply cannot in this state advertise through any medium a property you don't own. once you own it of course your free to do whatever.. but then if you rehab it you need a developers license.

Since it sounds like you're already tuning in...I recommend connecting with a real estate agent that you trust who can help you identify opportunities in your desired neighborhoods.

I owned a timeshare unit in a development with many unsold units. 

Just issue the notice and after the identified date on the notice (at least 30 or 60 days out) the rent increase becomes effective. 

Municipalities will Not be common buyers for vacant land....not sure how you came to that conclusion.The vast majority of vacant land you can buy this way will have No value to a builder.....there is a reason people so often let these properties go to tax auction and it would be very difficult for you to determines the paths of growth and what would be desirable to a builder/developer.

Not all CPAs have developed a niche in it or even deal with it.

I am have identified my target area and the types of houses I am looking for, fixer uppers and turnkey.