Mayfair sits right at the top of the high performers league and a high proportion of both flats and houses there have shown strong growth.

Detailed analysis shows size really matters. Large Mayfair houses, in excess of 10,000 square foot, in locations close to the famous Berkeley and Grosvenor Squares (eg. Charles Street, Hill Street and Upper Brook Street), witnessed some of the highest price growth, averaging 150%.

Average values for such properties have risen to between £2,500 and £3,000 per square foot, compared to figures of between £1,800 and £2,500 per square foot for the best performing one and two-bedroom flats in locations such as Mount Street.

The size phenomenon has been repeated across Prime Central London. The top 10% of properties by price growth have been shown to be 29% larger than the average for the sample as a whole.

Taken from:
Spotlight: Prime Central London Residential, 2005 to 2011