They should be inspecting around 15% of new buildings each year.
Offaly County Council is one of eight authorities across the country that failed to meet targets for the inspection of new buildings.
Figures from National Oversight and Audit Commission in The Irish Times also found that 83% of rental properties inspected in Ireland were found to be non-compliant.
Local authorities are meant to be inspecting between 12 and 15 percent of new buildings each year.
Other councils found to be in breach of the code of practice are Cork City, Cork County, Galway City, Kilkenny, Louth, Mayo, and Tipperary.