Nan Fung Development will use the extensive branch network of Centaline Property Agency to help promote sales of its San Po Kong Plaza. The developer has appointed Centaline to market 94 of the 170 units remaining in the 460-unit, twin-tower project. The units range from 538 square feet to 822 sq ft. The other 76 units remaining are being marketed by Nan Fung itself. Amid softer sentiment, Nan Fung is offering mortgages of up to 100 per cent, with a maximum repayment period of 25 years. The rate is 0.25 point above prime. Those using the 100-per-cent mortgage scheme must pay a 4 per cent premium. Premiums of 3 per cent and 2 per cent respectively apply to those borrowing 90 per cent or 80 per cent of the property price. Supervisor at Centaline's Wong Tai Sin branch Denise Wong Ching-kuen said the flats would find buyers at their average price of $6,200 per sq ft. The first units in San Po Kong Plaza went on sale last August at an average price of $4,601 per sq ft. Prices on higher floors eventually exceeded $7,000 per sq ft. Growing numbers of developers are opting to appoint estate agents to promote sales of remaining units in their projects.