One of Dupont Circle’s loveliest historic mansions has been transformed inside from a dilapidated boardinghouse to a sleek, upscale condominium building designed to attract buyers looking for a sophisticated oasis in the midst of the city. The Q Condominiums, 1700 Q St. NW, retains its distinctive turret, stone steps and stone balconies, while the interior offers a sleek European vibe.

The mansion, completed in 1890, was designed and built by Thomas Schneider, a prolific architect responsible for thousands of residences in Washington, including the landmark building that is now the Cairo condominium, 1615 Q St. NW. Between 1889 and 1892, Schneider designed and built multiple grand rowhouses in the Dupont Circle neighborhood, many with turrets and stone filigrees. The Q Condominiums building is listed on the National Register of Historic Places.

“The developer, Urban Vibe, has transformed multiple buildings with historic significance around the city, all high-end conversion projects with European style,” says Mitch Curtis, a real estate agent with Keller Williams Realty. “This building was purchased out of foreclosure. The tenants had stopped paying their rent because they knew it was in foreclosure. Some of them have stopped by and said they can’t believe it’s the same building.”

High-end features: Curtis says that Urban Vibe worked with Kamm Architecture to maximize the space and light in each of the homes.

“The homes all have wide-plank oak flooring, and the ceilings are all at least 11 feet high,” Curtis says. “The cabinets are custom-designed and imported from Italy, and the appliances are all high-end, too.”

Each of the four homes has a different layout, but each has two bedrooms and two full bathrooms and an open floor plan in the living and dining area. Since each home is on its own level, every one of the units has a distinctive round turret room to use as a dining or living area. All units have the same contemporary-style quartz counters in the kitchen; wine cooler; Liebherr, Miele and Bosch appliances; and Porcelanosa bathroom tiles and kitchen backsplashes. Each home has a full-size stacked washer and dryer. The bathrooms have pocket doors, and the kitchens include special features such as built-in trash bins with a cover to reduce odors.

The Penthouse unit, temporarily off the market, features an open floor plan with a living or dining area in the two-story turret room, a balcony off the living area and an open kitchen. The master bedroom has a private full bathroom and a closet with organizers. The second bedroom includes a floor-to-ceiling window, a closet with organizers and a private full bathroom. A spiral staircase leads to the private rooftop terrace, which has 460 square feet. The terrace is ringed with built-in benches and at one end has a stone outdoor kitchen with a barbecue grill, a refrigerator and running water.

The penthouse was originally priced at $1.175 million but will be reintroduced at a new price.

The garden-level unit, the largest with 1,280 square feet, includes an oversize center island in the kitchen, extra storage closets and a small built-in desk. A glass door opens from the second bedroom in this home to a private stone patio.

Neighborhood attractions: While the condominium amenities are certain to appeal to admirers of contemporary design, the neighborhood offers a prime location as well. Dozens of restaurants, bars and shops line 17th Street just outside the Q, as well as places for basic necessities such as a grocery store, a drugstore and banks. Venturing a short distance on foot brings residents to myriad restaurants, bookstores, vintage stores, theaters and music venues in Logan Circle, Dupont Circle and Adams Morgan.

The Q’s neighborhood earns a “100” Walk Score, meaning that residents can walk to everything they need or want.

Smart home features: All four of the units have special insulation and double layers of drywall ceilings and wood subfloors for protection from water vapor, for resistance to air leakage and for noise reduction. Each home has custom-designed wood double-hung windows that are energy-efficient yet meet the requirements of historic preservation. The units have smart home features, including wireless dimmers, surround sound and a wireless thermostat.

Living there: The Q Condominiums are on the south side of Q Street NW at 17th Street.

Base prices for the four available homes, which have 1,050 to 1,280 square feet, range from $949,900 to $999,990. All four two-bedroom, two-bathroom homes are still available.

Condominium association fees range from $169.20 to $304.56 per month.

Schools: Ross Elementary School, School Without Walls at Francis Stevens Elementary and Middle School, Wilson High School

Transit: This building is ideally situated within walking distance of the Dupont Circle Metro station and within less than a half mile of multiple bus routes, including D1, D2, D3, D6; G1, G2; H1; L1; N2, N3, N4, N6; S1, S2, S4, S9; X3; 37, 42, 52, 53, 54, 90, 92, 93 and 96; and the DC Circulator bus.

Michele Lerner is a freelance writer.