Bikhit, Managing Director of Kay & Co, said: "Connaught Square continues to buck the housing market and now clearly sits ahead of the game as one of the most sought-after addresses north of Hyde Park.
"The added security presence of having the Blairs reside on the square continues to attract safety-conscious individuals and families, and we are delighted to have sold our second substantial home on the square this year.
"This is further evidence that the market is improving and that the Blair’s made a shrewd decision in choosing Connaught Square as their home."
The Blairs bought their home in 2004 for £3,650,000 and subsequently bought the adjoining mews house for £800,000. Taking into account conversion and renovation costs, BIkhit estimates their approximate net profit to be £1,650,000.
Kay & Co is also marketing a six-bedroom property on Connaught Square for £2.8million.
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