This means 4 Blackburne's Mews is currently subject to strict security measures, including identity card access, patrolling U.S. marines, 24-hour police presence, checkpoints, anti-tank blocks and CCTV.
According to estate agency Wetherell, the property is known as the Little White House because of its white stucco façade, grand entrance and staircase and proximity to the embassy.
However the U.S. Embassy and the related security measures will move south of the River Thames to Nine Elms next year.
"With the security cordon gone in 2017 and the embassy replaced by a new luxury hotel with large public realms, residential values in the locale could rise easily by an additional 10 percent above the overall Mayfair value increases we have been seeing over the decades," Wetherell Chief Executive Peter Wetherell said in a media statement on Monday.
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