The yard of the home is pictured here. The building is believed to be a former carriage house built in the 1850s. 'This is where urban dwellers went up for the weekend,' says Mr. Bernstein. The home was converted into a residence in the late 1930s and was included in the Riverdale Historic District in 1990, according to a report from the city's Landmarks Preservation Commission

The couple did several renovations to the home over the years, including adding the sun room shown here. Mr. Bernstein says they invested several times the purhcase cost 'to modernize the house.'

The home's landmarks designation made adding the sun room 'quite a feat,' Mr. Bernstein says, and had to be done with the 'supervision' of the city officials. The couple designed the exterior of the room to 'look like it was part of the house,' he said. 'If you look at the stone on the addition, you really can't tell the difference.'

In colder months, the Hudson River can be viewed from the home through the bare trees. The house is a short walk from the Riverdale train station on the Metro-North, as well as the Wave Hill cultural center and public garden. It is also close to the Riverdale Yacht Club, which Mr. Bernstein describes as a 'little gem.'

Here, the entry of the home. Mr. Bernstein, 60 years old, is president and co-founder of Chelsea Piers and was a principal and co-owner of Silver Screen Management, which financed many Disney Films. Ms. Bernstein, 54, works at a tech startup called Urban Compass and previously helped launch Oxygen Media's TV network.

The first-floor hallway is pictured here. The Bernsteins have three children, aged 21, 19 and 17. The family moved to Manhattan 2 ½ years ago, and Mr. Bernstein's brother and sister-in-law occupied the home for about two years.

'The house is built into the hill,' Ms. Bernstein says. As a result, only two floors of the home can be seen from the street, while the full three floors are visible in the rear. In their renovations, the couple finished the basement and turned it into a family room, bedroom and bath, which leads directly to the backyard. The window bench in the family room is pictured.

The living room of the home is pictured. 'There's a lot of sentimental value,' in the home, says Mr. Bernstein. 'It's where the kids came home from the hospital, it's the only house the kids ever knew. It's a family home.'

Here, the dining room of the house. When the couple moved in, they replaced the wiring and plumbing and changed the upstairs configuration from five bedrooms to four.

The three-feet-thick stone wall in the kitchen was covered by sheet rock taken down in the initial renovation. 'We took it down and said, 'It's beautiful,' recalls Mr. Bernstein. 'It gives a homey earthy feel to the kitchen.'

A kitchen, pantry and bedroom were combined during the renovation to make 'one big, open kitchen,' says Mr. Bernstein. It was the place where the family spent the most time. 'As our daughter once said, we're kitchen people.'

One of the home's five bedrooms is pictured here. The approximately 6,200-square-foot house has five full bathrooms and a powder room as well as two wood-burning fireplaces.

Another bedroom in the home is pictured. The children's rooms have built-in bookcases and desks.

Here, the master bedroom. 'Structurally it's in mint condition,' says Mr. Bernstein. 'You just need to decorate to your taste.'

The couple redid the bathrooms in the home recently. The master bathroom is pictured.

A walking trail in nearby Riverdale Park is pictured. 'It's not a traditional suburban grid,' says Mr. Bernstein. The home was listed with Nakta Thomas, Susan Goldy and Lee Moskof of Halstead Property in February for just under $4 million.