DCD America, Inc., is now offering three "townhouses" in the 12-story residential building at 813 Park Avenue between 74th and 75th Street.

Cetra/Ruddy, Inc., is the architect for the conversion.

The property was acquired several years ago by Sean Combs.

Each of the four-story-high residences has a double-height living room and four working fireplaces as well as Poliform kitchens with Sub-Zero, Miele and Wolf appliances and bathrooms with Callacatta marble and Lefroy Brooks hardware.

The lower "townhouse" has a guest suite and separate kitchen. The middle "townhouse" has Italian glass walls. The top "townhouse" has two terraces.

Each of the three residences has an intrusion alarm system including door contacts, proximity motion and glass break sensors, and cameras monitor the lobby, elevators and roof.

Emily Todhunter of Todhunter Earle Ltd., who designed the Au Bar nightclub, has designed interior "concepts" for the development that include a wave pool in the lower "townhouse" with "mirrored steel panels to capture and reflect natural light from the recessed skylight."

The building has arched windows on the second, fourth and top floors.

The building is one of three narrow properties coming on the market on Park Avenue between 74th and 84th Streets: A 12-story, mid-block, pre-war apartment building at 823 Park Avenue between 75th and 76th Street is now sheathed in its renovation garments; it is being converted from rental apartments to 12 full-floor condominium apartments by Property Management Group; and a construction fence is up around the excavation for a new 15-story condominium apartment mid-block building at 985 Avenue between 83rd and 84th Streets.