Brad Sprogis and John Neale of Sprogis & Neale Real Estate are marketing Unit 2 at 600 Tremont, a beautiful 1,712-square-foot residence with two bedrooms and two-and-a-half baths. It is listed at $2,395,000.

In the mid-1800s, a second road from downtown Boston to Roxbury was built to accommodate the growing population. Initially called Clam Shell Drive, today it is known as Tremont Street. (The first road from the Shawmut Peninsula was Orange Street, which was the only connecting road along Boston Neck. It was renamed Washington Street.)

Elegant brick homes, many with bow fronts, were constructed in the South End along Tremont Street during the late 1860s, including one at 600 Tremont. One of its earliest residents was Gerry Whiting Cochrane, a boot and shoe manufacturer and bank director.

In the ensuing decades, the Victorian house was converted to apartments, and between 2002 and 2004, noted interior designer Mark Bombara undertook a significant restoration and renovation, creating three luxurious condominium duplexes designed by Baker | Wohl Architects.

Brad Sprogis and John Neale of Sprogis & Neale Real Estate are marketing Unit 2 at 600 Tremont, a beautiful 1,712-square-foot residence with two bedrooms and two-and-a-half baths. It is listed at $2,395,000.

The three-story building with a mansard roof is unusually wide at 25 feet and measures 50 feet deep. Black shutters frame the two-over-two windows with brownstone sills and carved lintels. The arched recessed entrance has egg-and-dart ornamentation and an acanthus leaf keystone.

Double doors with clear glass panes and a plain fanlight atop the high stoop open into a marble-tiled vestibule with another set of double doors. These doors have etched glass and complement an incised fanlight.

Inside the reception area are stairs to the upper unit and, on the right, a pair of nine-foot-high American black walnut doors that open into an expansive living space with Brazilian cherry flooring.

When contractors removed the dropped ceiling during the renovation, they found extraordinary ornate crown molding rimming the 12-foot ceiling, said Sprogis.

Between the two front windows is a lovely carved floor-to-ceiling walnut pier mirror, and on the interior wall is a marble mantel and mirror, original to the home. The fireplace has been converted to gas.

Opposite the windows are built-ins, and tucked into a corner are a coat closet and a powder room with a pedestal sink.

Tall pocket doors with etched glass panels separate the living room from the bow back rear room, which now functions as the dining area and kitchen. These panels are original, save one, which is a replica. According to one of the owners, one panel was chipped, so it was repurposed for a stunning centerpiece in a custom-designed glass dining table. It sits beneath a contemporary chandelier.

This room also has a gas fireplace with the original marble mantel. One of the bow windows was changed to a doorway to access a delightful 16-foot-long deck, perfect for al fresco dining.

A high granite-topped breakfast peninsula separates the dining area from the compact kitchen, which boasts abundant custom-built cherry cabinets, including lazy susans for easy pullouts and a wine rack, and granite workspace. Top-of-the-line stainless steel appliances include a four-burner Jenn-Air gas range and matching microwave above it, a Sub-Zero refrigerator and a KitchenAid dishwasher. Next to the refrigerator is a good-sized pantry.

A turned staircase with alternating spindles ascends to the upper level and the private spaces.

At the top of the stairs is a spacious guest bedroom with two closets, including a custom-built wardrobe, and a 10-foot ceiling with crown molding. Its adjacent bath has a deep soaking tub set in a marble surround and a single marble-topped vanity. The laundry closet has a full-sized stacked washer and dryer. Outside this bath is a shallow closet with just enough space for storing shoes.

The remaining space on this level belongs to the master bedroom suite with views of the Back Bay skyscrapers, including One Dalton now under construction. The marble-tiled bath features a large, glass-enclosed shower and a marble-topped double vanity. Off the bedroom is a big room with French doors and customized closets that serves as a home office. Original plans considered this space as a potential walk-in closet.

Included in the sale is a full-size deeded parking space off the paved alleyway behind the house.