Here's how I do my due diligence:1) Portfolio matching: (takes 30 seconds per deal)a) Have an educated opinion on where I think we are in the real estate cycles (financial and physical market cycles)b) Then and only then do I pick the strategies, capital stack, and specialized asset subclasses that make sense for that opinion.

We specialize in single family homes, condos, townhouses, and select small multi family homes.

With the right PM (I always recommend connecting with multiple who specialize in the types of properties you're buying), they should be able to help you stabilize the property and hopefully keep the tenants for multiple years. 

The bigger REIAs out there have many sub groups that may specialize in fix and flips, landlords, notes, or somewhere in between. 

Are you offering any special programs, incentives, or advice to help them close out the year successfully? 

I currently pay a premium price for my turnovers for a local cleaning company that specializes in STRs.

Go to a lender that actually knows what they are doing and specialize in investor finance. 

In our trade, I would not expect any owner or GC to get this correct since our industry is extremely specialized.

Because of special circumstances I have one property I self manage.

However, as Zane mentioned in his response, another option is to consult with a lawyer who specializes in appealing property taxes.