Infectious bronchitis (IB) is an economically important disease with worldwide distribution. Information is available about the presence of infectious bronchitis virus in commercial poultry in different geographical regions of Pakistan, however no comprehensive information is available about status of infectious bronchitis in commercial poultry. For this purpose, current study was designed for the sero-prevalence of Infectious Bronchitis Virus (IBV) from different commercial poultry farms in Faisalabad division and its adjoining areas. Samples were collected at different age groups and different breeds. Serological detection was carried out by two different means Hemagglutination Inhibition (HI) and Enzyme Linked Immunosorbent Assay (ELISA).  In HI, 346 samples from 56 broilers farms were tested for IB and from these 58 (16.8%) samples were positive for IBV tested against 4/91 antigen and 133 (38.4%) samples were positive tested against M-41 antigen. Total of 388 layers samples from 61 layer farms were tested for IB and from these 68 (17.5%) samples were positive for IBV tested against 4/91 antigen and 184 (47.42%) samples were positive tested against M-41 antigen. In case of ELISA, 1843 samples of layer were processed and 98.48 % were found positive, while in case of broilers, from 346 samples, 148 (42.80%) samples were found positive. Grossly hemorrhagic trachea and swollen kidneys was a consistent gross finding in all the seropositive birds.  Histopathology results showed that there was sloughing of tracheal epithelium and loss of cilia. Renal parenchyma showing moderate to severe congestion and moderate degree of acute tubular necrosis. The results concluded that there is strong presence and low protection of IB in broiler birds and due to this there is continuous emergence and rise in the disease outbreaks in spite of vaccination. Therefore, proper vaccination schedule with specific vaccinal strains should be followed in broilers and layers to control infectious bronchitis in commercial poultry.