A Buckinghamshire estate outside of London hit the market last week for £4.7 million (USD$5.96 million), according to Oliver Beales of Knight Frank, the listing agent for the property.

The current owners bought the property in 2015 for £3.95 million (US$ 5.03 million), when it was completed, according to Mr. Beales. They are moving because one of the two owners is relocating for a job change.

“They’ve upgraded the house from developer specification up to their own personal spec,” Mr. Beales said. “They upgraded their own control system, which does lighting, music, cinema, security… Taken from the basic package to the extreme.” Mr. Beales estimated that the couple put in around £100,000 (US$127,190) into the new system.

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Mr. Beales also noted that the couple had done extensive work on the property since they purchased it, including a remodeling of the second floor, which transformed an upstairs bedroom into a cinema/games room.

Called Ruby House because its developers name their properties after gems, according to Beales, it is an arts-and-crafts style mansion, offering seven bedrooms and 7,992-square-feet of livable space. The kitchen is fitted with Lida Cucina with ebony glass doors, granite countertops and garden-facing views.

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The octagonally shaped master bedroom opens out to a juliet balcony with rear-garden, which is secluded and private, according to Beales, and the master bathroom has Villeroy and Boch Porcelain tiling and a rain shower.

The property, located in Beaconsfield New Town, is known for its Georgian and Tudor revival street architecture. The estate is situated on Gregories Road, one of the three legs of what residents call “The Golden Triangle,” the name for “the most desirable streets to live on,” according to Beales. Ruby House is a five-minute walk to the city’s center and to the train station, which is a 20-minute ride into London. “You have everything on your doorstep,” Beales said.