Deep down in South City, a former Mayor's home is for sale. 2008 infill.
https://www.zillow.com/homedetails/3869-Robert-Ave-Saint-Louis-MO-63116/87617368_zpid/
https://www.zillow.com/homedetails/3869-Robert-Ave-Saint-Louis-MO-63116/87617368_zpid/
It's an interesting area down in Boulevard Heights... iirc this was greenhouse/gardens for @SLPS_INFO and was sold back in the go-go 00's for housing development. A fair amount got built before the crash but of course that stalled. But it's been picking up again.