Rawalpindi - The building department of Rawalpindi Development Authority (RDA) conducted operation against illegal land buildings and sealed seven properties, including six illegal shops and one chemical factory, in the residential areas. The residential areas included Abid Homes on Adiala Road, RDA spokesman informed yesterday.   According to him, the RDA’s Building Control is continuously conducting operations against illegal and unauthorised shops, building constructions, and encroachments within the controlled area of RDA in Rawalpindi city.