For the 12-month period ended March 31, 2019, there were building permits issued for 748 new homes in St Louis County, a decline of 23.60% from the prior 12-month period, according to the latest data from the St Louis HBA. As the table below shows, St Charles County saw a decline of 11.23% during the same period. Last month, those were the only two counties showing a downward trend, but, this month, Franklin County and the City of St Louis have also seen new home construction trend downward. Warren County again showed the greatest upward trend in new home construction with an increase of 23.66% in building permits during the most recent 12-month period from the prior 12-month period.