Photos of Mt Greenwood in the southwest corner of Chicago. The neighborhood has seen substantial investment in housing, in part because city workers are required to live in the City and it is seen as a desirable and safe neighborhood. A typical expansion is to build a second or third story on top of the original one story home.
The bungalows on the right were the original homes. The large single family to the left are replacement homes.
Second stories added to the original one story home.
My parents home above. The home below was owned by the parents of a friend of mine. Notice how the appearance was dramatically changed with the new front construction.