Designed by Office dA (now NADAAA) and Burt Hill and developed by Tim Pappas in 2007, the Macallen Building at 141 Dorchester Ave. in South Boston was New England's first new-construction condominium to receive Leadership in Energy and Environmental Design (LEED) Gold certification from the United States Green Building Council, for environmental friendliness above and beyond.

“Space, light and greenery” were the sine qua non for the “house as a machine for living in” that modern architecture pioneer Le Corbusier envisioned to maximize health and well-being at home. And, as the mechanistic modernism of the Macallen Building’s polygonal glass-and-metal façade suggests, the buyer of Unit 1001/1002 is in for heavy doses of all three qualities, particularly on the “green” front.

Designed by Office dA (now NADAAA) and Burt Hill and developed by Tim Pappas in 2007, the Macallen Building at 141 Dorchester Ave. in South Boston was New England’s first new-construction condominium to receive Leadership in Energy and Environmental Design (LEED) Gold certification from the United States Green Building Council, for environmental friendliness above and beyond.

Energy efficient heating, cooling and ventilation systems in every unit plus a sloping green roof of plants that reduces the carbon footprint while seasonally cooling and heating the building means you can breathe in a deep walk-in space and see the light upon entering the frosted-glass French door of the 2,801-square-foot sumptuous living space with three-bedrooms and two and a half bathrooms.

The building’s staggered steel truss system fortifies the floors enough to eliminate load-bearing columns, granting generous elbow-room to every space from the gargantuan great room to the foyer’s walk-in coat closet.

The unit’s location at the building’s northwestern end splashes the great room and primary bedroom in sunlight from double-glazed thermal full-height window walls with sky views of South Boston, the South End, the Financial District and the Blue Hills. Thus, light immediately pours in from your choice between primary bedroom privacy and great room gatherings as you enter.

Contemporary and traditional lighting accents the sprawling great room’s 10-foot soar and city-view sweep. The beams have up-lighting, giving the ceiling a sense of depth.

The dining area’s light fixture comprises a cluster of crystals dangling from a floral ceiling medallion. Combine these with the stunning sunsets and the amplitude of city lights at night and you and your guests are treated to an awesome urban spectacle, akin to a festive soirée in a hotel skybar, without the guilt of polluting the earth before you.

But what the building’s bare-bones façade doesn’t give away are the splashes of splendor throughout that begin in the oversized powder room. The designer sink is shaped like a vase, the designer commode adds a touch of modern sculpture and the mosaic wall forms a Victorian wallpaper pattern in silvery, gray and white tiles.

The Arclinea/Miele kitchen amply supplies everything for such occasions. Its deluxe wine coolers, tinted-glass china cupboards and appliance garage, white and woodgrain laminate storage bins and push-latch cabinets, a cabinet-concealed refrigerator and dishwasher, panel-hidden pantry, a double oven, espresso machine, deep stainless sink, quartzite kitchen table and broad pass-through service counter/bar all add up to quite the “machine for living.” Contrasting this clean-lined efficiency is a sculpturally scrolled, crystal-accented light fixture over the table.

Left of the foyer are well-sized second and third bedrooms, useful as offices, libraries, nurseries or home gyms as well all pulled together with the lustrous walnut eco-friendly Bamboo floors and doors found throughout, adding a cohesive look.

A built-in storage unit with blackened glass sliders and a EuroCave wine cooler initiates the second bedroom. The mosaic-like wallcovering of blue and brown mini-rectangles and the overhead “sparkler” light of coppery rods and bulb-tipped wands bursting from a central sphere energize the room with the vibrancy of the urban hustle-and-bustle below.

A sizable laundry closet with linen shelves and a side-by-side Miele washer and dryer precedes the gray-walled third boudoir.

This bedroom has a private balcony with a slider, a triangular storage closet with a scrim screen door patterned in rounded squares, a built-in closet/shelf unit with opaque glass sliders and a scrolled blown-glass chandelier with crystal pendants.

The en suite full bath features a designer commode such as the one in the powder room and a terrazzo quartz vanity with a freestanding farmer’s sink.

The grand primary suite boasts traditional crown moldings with backlighting and up-lighting in a double tray ceiling. A built-in video projector and a remote-controlled drop-down screen make a “movie palace” out of the room. Behind the bed area is a dressing closet with a tinted full-height mirror.

The primary bath is a palace of fixtures at their finest. This room showcases a soaking tub by a window wall with city view, twin wall-mounted vanities with light-framed mirrors and chrome cylinder soap dispensers, plus heat-radiating tile floor. There’s also a mosaic-tiled complex of a deluxe shower with hand-held and rain showerheads and body-sprays plus a water-closet with a designer commode and bidet separated from one another and the main floor by glass sliders.

The window treatments, as well as surround sound, lighting and heating throughout this home can be controlled from your phone, I-Pad or computer, provided by Smart Home Technology. The home also has filtered fresh air vents promoting clean-air living.

The energy-efficient heating system extends outside to a common lap pool where four grilling stations are on hand for poolside barbecues. An adjacent rooftop park by Landworks Studio augments the greenery.

Fitness centers are handy at The Handle Bar Indoor Cycling Studio downstairs and in the adjacent Court Square Press Building.

Another LEED Gold-worthy feature is the proximity to subway and bus service to Downtown, Cambridge, Castle Island and more.

Offered at $2,500,000, Unit 1001/1002 at 141 Dorchester Ave. lets you do what can be challenging in a dense, busy city: soak in the sun, play in the space and breathe in the air.

For a private showing, contact Beth Dickerson of Gibson Sotheby’s International Realty at 617-510-8565 or Beth.Dickerson@SothebysRealty.com.