Although the govenment frequently amended the city plan (for example, in 1964 it passed revisions to the urban plan to renovate the city and create incentives for private investment in public works), drawing up plans is not the same as implementing them. Urban renewal and infrastructure require money, which must be appropriated early and in large amounts.
張景森認為，當時政府對都市計畫所能發揮的功能，其實並無太大的期望，既無財源、又無開發手段，「可以認定當局所要求都市計畫的實際功能並不是一個建設性計畫，而只是消極的管制性計畫」，張景森指出。