The Douglas County Zoning and Codes Department handles permits for all unincorporated areas of the county. Incorporated cities, such as Lawrence, Eudora, and Baldwin City, maintain their own independent building departments and permit processes for properties within their respective city limits.
How this fits with the state
The state authority here is Kansas local building departments; Kansas trade boards where applicable. The county file does not replace that — it adds the permit office, local overlays, and the actual filing path.