City of DetroitA trade permit is issued for mechanical, electrical, plumbing, boiler and elevator work done on a building. A licensed professional or a home owner who occupies the dwelling can apply to BSEED for a trade permit. The application approval process involves reviewing the application, verifying the licensed professionals' information and issuing the permit. A trade permit lasts for six months unless inspection activity occurs consistently. The information is tracked for compliance, safety and property assessment.ArcGIS FeatureLayerhttps://hub.arcgis.com/datasets/f77e9fd44b7e44089b41d3f8161631fa_0engDetroit Open DataPublicTrades Permits [Michigan--Detroit]Web servicesMichigan--DetroitMichiganLast Modified: 2026-01-08