Yes, you will typically need a permit to build a deck in Atlanta. According to local building codes, any new deck construction, as well as significant repairs or modifications to an existing deck, generally require a building permit. The process ensures that the deck meets safety and structural standards. To obtain a permit, you'll need to submit detailed plans, including the deck's design, materials, and dimensions, to the city's Department of Buildings. It's also important to check with your local homeowners' association (if applicable) and ensure that your project complies with zoning regulations.