

The NYW&B tunnel became a wine cellar following the renovation of the station building, and its repurposing as a restaurant. Unlike many other stations on the line, the Mamaroneck station does not include a pedestrian overpass. The tunnel to the NH platforms remained open. The tunnel to the NYW&B was sealed, and the exits to the former NYW&B platforms covered. Subsequent to the abandonment of the NYW&B in 1937, the area formerly occupied by the building and NYW&B platforms and tracks was converted to parking, and the building remained at the bottom of the embankment on Station Plaza, adjacent to Columbus Park.

A second NYW&B depot was also built in the Larchmont Gardens neighborhood to the northeast, which today is a Girl Scout building. The building was moved down an embankment to its present location in the 1920s to accommodate the construction of the New York, Westchester and Boston Railway (NYW&B) and separate tunnels connected the building to the respective railroad's platforms. The station building was originally located at track level next to the New York, New Haven and Hartford Railroad (NH) platforms. The original station at Mamaroneck burned in February 1889.

It was also a replacement for the original Mamaroneck New York and New Haven Railroad station built in 1848 across Mamaroneck Avenue on the corner of Mount Pleasant and Bishop Avenues. The former Romanesque station building, near the north end of the inbound (to Grand Central Terminal) platform, was constructed in 1888, making it the second oldest surviving station building on the New Haven Line, according to a plaque inside the building. Mamaroneck station is a commuter rail stop on the Metro-North Railroad's New Haven Line, located in Mamaroneck, New York.
