(c)the residential unit has a maximum built-up area of one thousand square feet where such residential unit is situated within the city of Delhi or Mumbai or within twenty-five kilometres from the municipal limits of these cities and one thousand and five hundred square feet at ][any other place; ] [Substituted by Act 33 of 2009, Section 37, " any other place; and" (w.e.f. 1.4.2010).]