
19 Gramercy Park South
In 1887, Mamie Fish changed this house’s address from 86 Irving Place to 19 Gramercy Park South. The doorway stayed where it was. Built in 1845, the house had already acquired its mansard roof when the Fishes bought it. Mamie commissioned Stanford White to remodel the interiors, adding a marble staircase and a ballroom for the parties that would make her famous.
Stuyvesant Fish ran the Illinois Central Railroad and became a Trustee of Gramercy Park in 1893. Mamie made their home a destination for fashionable New York, even as many of their contemporaries were moving uptown. Benjamin and Hilda Sonnenberg rented the lower two floors in 1931 and bought the property in 1945. They joined it to the building next door, creating a thirty-seven-room home filled with art, books and guests.
The building profile follows these two households, White’s alterations and the later restoration of the house now known as the Sonnenberg Mansion.
Read the building profile

