The piecemeal development approach to the West Kowloon cultural project proposed by the Institute of Architects has many drawbacks, including a lack of continuity, a shortlisted bidder says. Henderson Land vice-chairman Colin Lam Ko-yin said if the arts and cultural facilities were developed separately, 'they will be difficult to manage'. The institute last week called for the site to be developed in phases under different tenders to ensure it catered for changing cultural needs. Mr Lam said another concern was the huge canopy planned to cover the site. 'The canopy cannot be built piece by piece because of its necessary foundations. Splitting its construction will cause safety problems. Other problems include responsibility for and maintenance of the canopy.' Henderson subsidiary World Culture Park is one of the three shortlisted bidders. The others are Dynamic Star International, a joint venture by Cheung Kong (Holdings) and Sun Hung Kai Properties; and Sunny Development, a consortium between Sino Land, Wharf (Holdings) and Chinese Estates Holdings. A Dynamic Star International spokesman said it was open-minded about the tendering approach. A Sunny Development spokeswoman said it needed to study the institute's proposal in detail. Mr Lam said he was not concerned that the creation of a Legco subcommittee on the West Kowloon project - as proposed by lawmaker Alan Leong Kah-kit last week - would delay the project. 'If they [legislators] think there is a need to set up a panel, they should do it ... more debates will make things clearer.'