At least a part of the Homecrest area of Brooklyn was seriously affected by Hurricane Sandy, and one can see that is true just from looking at the Avenue U N train station photograph from the disaster:Source:http://www.dailymail.co.uk/news/article-2225164/Hurricane-Sandy-batters-New-York-Citys-subway-tunnels-flooded-network-shuts-down.html

Source: http://prattcenter.net/map/toward-informed-rebuilding-documenting-sandys-impacts

According to this map, the main Homecrest area was not flooded by Hurricane Sandy, but water came up really close to it. Maybe the map labeling of neighborhoods is not entirely accurate since Avenue U passes through the center of Homecrest and it was obviously flooded at least partially, according to photographic evidence like the train station picture above.

Since there is not much information regarding flooding of the Homecrest neighborhood, overall the conditions were probably not as bad as in some other, more coastal places.
Some primary sources reported power outages. (More information to follow.)