One of the buildings was erected in 1892 in a Romanesque Revival style and the other in 1845 as a whalebone cutting establishment.

Restaurateur David Bouley had planned to convert one of the buildings into a cooking school but eventually abandoned that plan.

The condominium apartments will have three bedrooms and three bathrooms each plus a penthouse with a 50-foot-high living room with two fireplaces and two terraces. Six of the twelve units will have outdoor space with views of Duane Park.

The former Mohawk Electric Building on the northeast corner of Duane and Hudson Streets had been leased in 1996 by David Bouley and the late Warner LeRoy with an option to buy. The 7-story Mohawk building is notable for large arched windows on the sixth floor and a corner turret on Hudson Street.

The building will have a 24-hour concierge. Master bathrooms will have brick-patterned walls, mosaic tile floors and single slab countertops in rare honey Onyx. Kitchens will have Subzero refrigerators, Bosch dishwashers, Viking gas ranges and steel cabinets.

Mr. Lombardi came to prominence as an architect and developer in 1979 when he converted the former Sinclair Consolidated Oil Company building at 55 Liberty Street into a cooperative apartment building. His more recent downtown projects include the Juilliard Building at 18 Leonard Street, the former United States Sugar Building at 79 Laight Street, the Ice House at 27 North Moore Street among many others.

This building has no garage and no sidewalk landscaping but has a prime location in the heart of TriBeCa, close to many restaurants and good public transportation.