Mansion Global has learned that over 6 acres in the posh Polo Club neighborhood of Denver will go on sale Wednesday for the first time in 70 years for $ 21.5 million.

According to listing agent Josh Behr of LIV Sotheby’s International Realty, the land is roughly twice the size of many of the larger lots in the polo club community. It is also the first time the property has been listed since 1951.

“This is one of the two largest residential properties ever launched in Denver,” he said. “It’s not just an ordinary house that you can buy anytime. This is an opportunity for generations … it may not come out in our lives. “

The residences on the property – a four-bedroom, five-bathroom main home spanning 8,417 square feet and a two-bedroom, two-bathroom guest house that’s just over 1,000 square feet – are considerably newer and were built about eight years ago. Mr. Behr said. The owners, who refused to comment on this item, worked with Jackson Hole, Wyoming-based architecture firm CLB on the Frank Lloyd Wright-inspired design.

The temperature controlled greenhouse.

Kris Lewis, LIV Sotheby’s International Realty

The result is a residence with a low roof, deep eaves, windows in the clergy just below the ceilings and built-ins. According to Behr, there are “organic, modern materials” everywhere, from sapele, black walnut, and alder to Colorado sandstone, which is used inside and out to create continuity.

Because the owners were so familiar with the property, they guided the architects on how to orient the house and how to connect the rooms, the agent said. The house overlooks the lawns and gardens, but is also surrounded by mature trees and tall grass.

“The design captures the indoor-outdoor lifestyle,” explained Behr. “They wanted to open everything and keep it open.”

The living room has oversized windows and built-in shelving, while the dining room, as listed, has a pocket door that leads to the terrace. There is also a kitchen area, a pantry for butlers and a temperature controlled greenhouse.

Additional amenities include two libraries, study, fitness area with steam shower, master bedroom suite with fireplace, walk-in closet and bathroom, pool and spa, and a five-car garage. The guest house is connected by a breeze and offers a kitchen, family room and dining area.

The polo club district is monitored by security guards around the clock, which gives residents an added sense of security and privacy, said Behr. The home is also within walking distance of Cherry Creek, a waterway that runs through Denver, and the mall that shares its name.

Mansion Global was unable to determine how much the owners paid for the property.