01
What "penthouse" actually means
The strict version: a residence on the top habitable floor of a building, often with private roof or terrace access and sometimes a private elevator landing. The loose version, used in a lot of listing copy across Uptown and elsewhere, is simply the largest or highest unit available for sale in a given building.
Neither version is wrong exactly — but they should be priced and inspected differently, and it is worth asking directly which one a specific listing is describing before assuming.
