This spacious, high-style home is offered for $11,500,000 by Patti Donovan and Diane Keliher - both of Keliher Real Estate. It has plenty of space (3,908 square feet) with four bedrooms, four full bathrooms and two half baths.

Looking out over the Charles River Esplanade from this penthouse condo on Beacon Street in the Back Bay, it’s easy to realize how beauty can add spark to everyday life. In a meticulous new building within an 1860 structure beneath the mansard roof, an elegant triplex home has amazing views that every luxury a buyer would want.

Everywhere you turn in Unit 3PH at 142 Beacon St., there is something beautiful to take in – inside and out.

“You don’t know which way to look first,” says Patti Donovan of Keliher Real Estate during a recent tour. “You’ll always have an unobstructed view here.”

This spacious, high-style home is offered for $11,500,000 by Patti Donovan and Diane Keliher - both of Keliher Real Estate. It has plenty of space (3,908 square feet) with four bedrooms, four full bathrooms and two half baths.

The top floor of the home shines, starting with the kitchen. Light flows in through a huge skylight, reflecting satiny white oak flooring. Glossy cabinets are custom-made by Herrick & White and complement the honed statuary marble counters and backsplash. Walnut on the wooden island top provides contrast.

You couldn’t ask for better appliances than the ones installed here. Refrigeration is handled by a pair of tall Sub-Zero columns – one fridge and one freezer. Each is concealed by a walnut panel. The six-burner cooktop, microwave drawer and double wall ovens are all by Wolf and the dishwasher is a Miele.

On the other side of the breakfast bar is a generously-sized family room, staged smartly by the Casa Design Group. From here, you can sit and gaze out through the custom Belisle windows at the river.

On a nice day, you can walk out onto the terrace to enjoy the view. The water and gas hookups are expedient for grilling. Expect friends to come over on the 4th of July for el fresco dining and a prime fireworks view.

The vanity and toilet in the conveniently-placed powder room are wall-hung to make good use of space. The white marble floor is breathtaking.

At the front of this level is a lovely dining room with a gas fireplace. The mantel is exquisitely carved from black Italian marble. A balcony overlooks the Back Bay with its church steeples and iconic skyscrapers.

Take the direct access elevator to the middle level where the floor-through master suite is located. The bedroom is staged with a king-sized bed to show that there’s plenty of room for your furniture. The master closet is enormous – as big as a bedroom. The buyer will receive $12,000 toward outfitting and organizing the closet.

Step into the master bath, which is a showplace in itself. The soaking tub is deep and the walk-in steam shower has a seat and three showerheads, including a hand-held body spray. The shower wall is a slab of marble – no grout lines there.

A double vanity allows two people to get ready at once. The toilet is housed in a private water closet.

The large room at the front of the level is set up as a living space with another Italian marble fireplace and an adjacent library or home office behind pocket doors. The built-ins in this room can be used as bookshelves or as a place to display art objects. The view out the front windows is quintessential Back Bay.

A bathroom nearby features black marble and brass fixtures, giving this space extra style.

One story down is a myriad of accommodating space. On the Beacon Street side are two spacious bedrooms, each with a private full bathroom. On the river side is a suite of very flexible space. Maybe the owners will enjoy it as a game room, serving family and guests from the wet bar. It would also make a fabulous bedroom suite for visiting family.

In addition to the large bedroom, there is an office. And the bathroom is amazing with a cove ceiling, soaking tub and a shower with a body spray. The marble floor tiles are set in a chevron pattern.

Also on this floor is a well-equipped laundry room. Even a prosaic chore such as laundry will seem effortless here because there are two pairs of stacked Maytag washers and dryers. A deep sink makes short work of hand washables and an ironing board is built into the wall.

Storage is plentiful with glossy cabinetry similar to that in the kitchen and bathrooms. There’s also a solid surface counter that’s beneficial for folding. Under-cabinet lighting keeps everything illuminated.

Everything in this penthouse has been created with luxurious convenience in mind, using the best materials and meticulous craftsmanship. The light is incredible in this unit and the Back Bay views are unforgettable from anywhere in the home.

“It only gets better when the leaves come in,” Donovan says.

If the penthouse isn't quite your taste - or your budget - you might prefer Unit 1 - a 2,488-square-foot three-bedroom duplex with many of the same interior features.

One outstanding difference is the outdoor space - Unit 1's expansive 800-square-foot rear deck. Situated over the building's garage, the deck has water, gas and electrical connections.

The hot tub there is the best way to soak away the stress of the day. Unit 1 also has a private garden with a patio accessible from the home's third bedroom. It calls to mind leisurely summer days spent in a cool, shady spot that's steps away from all that is happening in the Back Bay.

142 Beacon is a place with an interesting history. It was built as a single family home of French Second Empire Mansard architecture in 1860. According to the Keliher Real Estate website, “Impressive in its French styling with distinctive mansard roof, the home delivered a touch of Parisian elegance to Boston with neighbors (such as) Mrs. John L. Gardner, who lived just doors away. The home was originally one of a symmetrical pair (140-142 Beacon), with 142 Beacon three feet wider. Originally, the houses had brownstone façades, a shared entrance portico, and a single cornice and mansard roof with two dormers each.

“In 1861, after the houses were completed, owners Gardner Brewer and George Wales had the foresight to finalize an agreement limiting the height of any structure in the rear of each other’s property and granting each other ‘free and uninterrupted easement of light and air’ above 17 feet.”

142 Beacon has undergone a complete renovation and is now an all-new ultra-luxury development that everyone will love. And it’s now ready for its new residents.