Said to be one of the first two-family structures in NYC, 7-8 Phelps Place is in the St. George-New Brighton Historic District, with details of history in the handbook, on line here http://www.nyc.gov/html/lpc/downloads/pdf/reports/ST._GEORGE_HISTORIC_DISTRICT.pdf on page 57.
This property is off market, which means it's not currently listed for sale or rent on Zillow. This may be different from what's available on other websites or public sources.