Announcing home prices just an hour before the start of internal sales is not enough to increase transparency, the housing chief said yesterday. Michael Suen Ming-yeung's comments came two days after the arrangement was used at an internal sale of flats at a private housing estate in Sheung Shui. The secretary for housing, planning and lands said one hour was not enough to address problems with the internal sales. 'Although I did not go there, based on what the media has reported, there is still room for further improvement,' he said. 'The industry should consider the public's expectations and make a correct decision on whether [prices] should be released earlier.' He added that the Real Estate Developers' Association had been given three to four weeks to review and improve guidelines on internal sales to enhance transparency. Price lists are often not released before sales, depriving potential buyers of key market information. Mr Suen also admitted that the application list system for land auctions might not be running as smoothly as developers expected. He said he understood developers' concerns that the system might lead to them paying more for sites than they might otherwise do, thereby increasing the risk they bear. Developers have demanded the government set lower reserve prices for land lots, but Mr Suen said the system was being reviewed and it was too early to say if prices could be cut. The minister also referred to political parties' call for an early resumption of sales of Home Ownership Scheme flats. He insisted the government would not sell the remaining flats before 2007, to maintain a stable housing supply.