In a column for Inside Housing I've looked at some of the data around how gentrification affects existing residents to see if there's any reason to worry about it. Surprisingly, it doesn't look as if gentrification really does push out existing residents very much – involuntary movement out of a gentrifying neighbourhood is about 0.6 percentage points higher than city-wide averages:

Instead of displacing people, gentrifiers tend to add to a local area’s population through new builds and property conversions (like warehouses and former industrial buildings). Although rents might rise for existing tenants as overall demand for the area rises, the involuntary displacement rate is very small - in one US study, it is 1.4% compared to a city-wide average of 0.9%. . . .

And gentrification brings benefits for locals, with better jobs opening up:

It often feels like the staunchest opponents of gentrification are other gentrifiers who got there a bit earlier. The evidence from the US and the UK is that gentrification raises the incomes of people living in affordable homes and improves their credit scores.

And this is not even to mention the reduction in crime that usually takes place as well. Read the whole thing here.