Consider the footprint as well as the view.
Lakeway provides an impervious-cover calculation guide. Before choosing the size of an outdoor deck, establish how the proposed construction will be treated for the particular lot. Open joints or a permeable-looking surface should not be used as a substitute for confirming the calculation.
Bring a survey showing existing paving and structures, plus the proposed deck outline. Discuss how water below the deck will move and how future access to drains or irrigation will be maintained.
Local reference: Lakeway impervious-cover guidance. Confirm requirements for your address and scope with the responsible authority.