BROOKLYN—Jade 8, a collection of eight environmentally friendly condominiums in Brooklyn’s Gowanus neighborhood, has opened its doors to the public. One contract has been signed.

The initial sale at Jade 8 was for one of the most expensive homes in the four-story building: a 1,475-sq.-ft. penthouse duplex, according to Warren Lewis Realty, the exclusive marketing and sales agent for Jade 8. The two-story penthouse residence features three bedrooms, two bathrooms, an upper-level master suite, a private deck off the master bedroom and separate terrace off the living and dining room.

Located at 186 8th Street, Jade 8 is being developed by a builder with two LEED-certified Brooklyn developments to his credit. Jade 8 was designed with an environmentally-sensitive approach to new construction. State-of-the-art green construction techniques will provide greater comfort to residents, as well as lower their energy bills.

Green features of Jade 8 include fresh air filtration systems via heat recovery ventilation, low-VOC paint, LED lighting, energy-efficient Loewen windows and recycled materials such as sound insulation for the floors and Caesar stone kitchen countertops.