A Room in the Sky for a $2.5 Million Rittenhouse Penthouse

This Rittenhouse-area penthouse condo at 1737 Chestnut has city zoning approval to build 20 feet in the air on top of the roof deck, which measures 21′ x 17′. The structure can be versatile, from outdoor entertaining area to summer sleep space. The important thing is: It’s already got the air rights, so there’ll be no intractable NIMBY debates or community meetings where hair is pulled and pulled out.

As for the space now, it has oak hardwood floors, a gas fireplace and arched windows that get a lot of light, according to the listing. The building, known as 1737, is prewar but was rehabbed about nine years ago. It’s pet-friendly, and obviously nicely located. There are 19 units.

Beds: 2
Baths: 3
Square Feet: 2,900
Year Built: 1998
Price: $2,450,000
Listing: 1737-39 Chestnut Street, #1201Kurfiss Sotheby’s