Before designing and purchasing a deck, you should first decide how you want to use it. Once you decide how the deck will be used, you can design the deck around your needs. Some questions to consider include the following: Do you want a hot tub or spa on the deck? Do you want to leave space in case you change your mind later? Are you planning a swimming pool at some time in the future? If so, where will you put it? How will the deck and the pool fit together in the design? Are you planning to use the deck in the rain? If so, do you want a roof over a portion or all of the deck? Will you want to enclose the deck using screens?