After an island-wide government investigation in April 1980, over 50,000 lots were listed as falling under the construction restriction stipulations, and the original two-to three-year time limit was reduced to one year. Those who had begun construction by the deadline would have the land taxed or forcibly purchased at the (low) assessed value. The program was to be implemented in five phases.
六十九年四月政府在全省調查後，列出五萬多筆符合限期建築規定的空地，並把原本二到三年的限期縮短為一年，逾期未建者則噪空地稅或照價收買，分五期實施。