Property transactions jumped to more than 9,000 last month, the highest for a single month since last May, mainly driven by developers' increased residential sales, according to estate agents. Figures by Centaline Property Agency and Midland Realty estimated that registered sales and purchase agreements rose 15 per cent to between 9,039 and 9,090 from 7,895 in March. Centaline said transaction values rose 25 per cent to about HK$24 billion due to the inclusion of the HK$2.84 billion sale of the Furama Hotel in Central. Midland Realty estimated the transactions were worth HK$21.2 billion last month, up 11.5 per cent from March. The figures better reflect the market activity in March due to a normal four-week time lag between transaction and registration. Official figures will be out in the next few days. Midland executive director Victor Cheung Kam-shing said registered property transactions would fall 30 per cent in May, while home-buying interest was dampened by last week's disappointing land auction. Cheung Kong (Holdings) and Sun Hung Kai Properties bought a large residential site in West Kowloon for a poorer-than-expected HK$1.9 billion. Centaline and Midland estimated that there were about 2,300 to 2,500 private residential transactions in the primary market last month, up about 80 per cent from March. The rise was due to developers' speeding up the sales of remaining units by offering different sweeteners. Midland said second-hand market sluggishness had been affected by developers undercutting pricing strategy to unload new projects.