The number of CCTV cameras currently installed is not covering enough of the building (not covered underground parking floor area and the garden behind the building (next to the Expressway).
The number of CCTV cameras installed today are not adequately covered areas of the building. (It does not cover floor space, underground parking and a garden behind the building. (Next to the freeway)
The camera CCTV installed currently not covered the building area adequately. (because not covered an area of underground parking and garden behind the building (next to the expressway).