About 300 home-owners at Mount Haven, in Tsing Yi, have put unfinished flats up for sale - the highest number recorded in a survey of 13 uncompleted developments by Hong Kong Property Services (Agency). More than 1,000 flats have been put on sale at the 13 developments since the Government last Friday lifted a ban on the resale of uncompleted units before assignment. To date, only eight units at Tierra Verde, Tsing Yi, had been re-sold, for a premium of between $50,000 and $100,000, the survey said. Hong Kong Property said buying interest had calmed after an enthusiastic response to the lifting of the ban. The survey indicated that Tierra Verde and The GreenWood in Laguna Verde, Hunghom, each had 200 units on sale. Other sales include 130 units at Villa Esplanada, in Tsing Yi, and 70 units at Maywood Court, in Tin Shui Wai. Hong Kong Property said the asking price at Mount Haven was between $3,900 and $4,000 per square foot, about 4 per cent higher than flat owners paid last month. It said those who had shown an interest were willing to pay $3,850 per square foot and there had been no successful transactions so far. Mount Haven is expected to be completed by October next year. Owners bought the flats at peak prices last year and were still asking unrealistically high prices, the survey said. Asking prices at Villa Esplanada were $5,400 per square foot - about 16 per cent higher than Tierra Verde, a neighbouring project above the Tsing Yi airport railway station, it said. Property prices have dropped between 40 and 50 per cent compared to last year and most owners will lose more than $1 million even if they sell their units, the survey said. Some owners are finding it more difficult to obtain mortgages to pay for their purchases.