Review the structure, not only the surface boards.
Austin publishes building-permit exemptions, but exemption from a building permit is not a substitute for checking the whole project. A decking proposal should distinguish replacing boards from changing the frame, supports, height, or connection to the building.
For an established home, provide photographs underneath the current deck as well as the top surface. For a commercial gathering area, describe expected use and access requirements. Before selecting colors, resolve the finished threshold, stair arrangement, drainage below the deck, and maintenance access to equipment.
Local reference: Austin building-permit exemptions. Confirm requirements for your address and scope with the responsible authority.