A pair of Docklands flats, where generous kitchen space and luxury terrace combine, have crowned the boom in top-end property sales.ThisIsLondon.com identified the Canary Wharf flats as a new record in cost per square meter for the capital, with an asking price of 18.7 million set for the swish Canary Wharf penthouses.At a cost of more than 2,700 per square foot, the flats are said to have trumped cost by space ratios in exclusive locations like Belgravia and Mayfair, with their valuation adding Halifaxs reported three-fold increase in million pound property sales over the past five years.The properties are said to contain a generous guest bathroom and kitchen, meaning that cooking space will not be wanting in the ultra-modern apartments.Top home design from popular architects has also seen the penthouses incorporate three ensuite bedrooms and a vast terrace offering spectacular views over London.Sales of the flats will raise south-east Londons profile in the stakes of top-end home design and big money purchases, with west London, particularly Chelsea and Kensington currently holding the most multi-million pound properties in the capital.