A pilot scheme under which homeowners can invite the Urban Renewal Authority to redevelop their blocks attracted just 25 applications by the deadline yesterday. The biggest site covers 21 blocks and the applications come from Central and Western, Island East, Yau Ma Tei, Kowloon City, Sham Shui Po and Wong Tai Sin districts. District councillors say one was received from the dilapidated 'Thirteen Streets' area on the fringe of the former Kai Tai airport. It is unattractive to private developers because of limited profitability. Another is from Hai Tan Street, Sham Shui Po, near an existing authority renewal site. Many of the applicants will be left disappointed as the authority earlier decided to take on only one or two such projects this year. 'A panel will review the applications. The successful cases will be included in our annual business plan for the following financial year,' a URA spokesman said. It would decide whether to expand the scheme after reviewing the first year's operation. The so-called demand-led scheme was launched in July. Buildings on a site over 400 square metres and in poor condition are considered for redevelopment with two-thirds support from owners. An application gets higher priority if renewal brings urban planning gains such as more open space. Many councillors helping flat owners to organise themselves blame the two-third-majority threshold for the small number of applications. The authority said the high threshold was needed as it would respond only to groups of owners where there was keen demand. Kowloon City district councillor Pius Yum Kwok-tung said homeowners in a street in To Kwa Wan, behind the site of a fatal building collapse last year, wanted to have the whole street rebuilt but they failed to get consent from two-thirds of owners. One block in the middle of the street was already acquired by a company. 'There are many buildings nearby with similar problems. Developers or their agents have acquired some units in the blocks, making it difficult for owners who haven't sold to make up the majority,' he said.