Park Slope Double-Wide Romanesque Revival Asks $18.5 Million With Elevator Included

Lillian Heidenberg's landmark Park Slope mansion — two lots wide, six stories tall, and hung with an original Alex Katz — has hit the market at $18.5 million.

The Park Slope property is a double-wide Romanesque revival mansion spanning two combined lots.
Asking price is $18.5 million.
The home includes a private elevator.
An original Alex Katz painting is included in the listing.
Owner Lillian Heidenberg is named in the listing records.

A double-wide Romanesque revival mansion on a Park Slope block has listed at $18.5 million, according to listing records reviewed by Curbed.

The property, owned by Lillian Heidenberg, occupies two combined lots and rises six stories. A private elevator services the floors. The listing inventory includes an original Alex Katz painting.

Romanesque revival rowhouses in Park Slope routinely trade in the low millions. The Heidenberg property, with its combined footprint and internal lift shaft, is operating in a different category entirely.

The Alex Katz is not listed separately.