I've identified a neighborhood that fits by 'up and coming' requirements. And I've found a duplex that meets my (monthly rents) / (purchase price) requirements. However, the duplex is in one of those blocks (or few blocks) that is very duplex heavy. 

I'm wondering what this will mean for appreciation and my ability to raise rents (compared to the broader market / neighborhood) for the years to come. My gut tells me that both will be a little depressed vs. the broader market / neighborhood.