The Dallas Development Code requires that "Except for single family and duplex uses, a person shall not use or change the use of a building, a portion of a building, or land without obtaining a certificate of occupancy from the building official."
A new CO is needed for:
•The first use of land or a building
•A change of use of land or a building
•A change of tenant on an existing CO, or
•An existing use increases or decreases floor area

Building Inspection Certificates Of Occupancy for fiscal year 2017.

Building Inspection Certificates Of Occupancy FY2016

Building permit is needed for work involving structural elements of a building. Permits are not required for certain construction work. Historic or conservation districts have special requirements for work on the exterior of properties.