Choose the flattest spot possible, but make sure you comply with local codes. Check if your pool needs to be a minimum distance from property lines, septic tanks, and roads.  Contact your local recorder's or assessor's office if you need to find your property lines. Run an online search or look for applicable codes on your city's, state's, or province’s government website. If you have a homeowner’s association, it’s also wise to check its bylaws. Make sure your pool is not close to an easement or setback where workers might need to access power or other utility lines. Check to see if your pool might be in a conservation area if your property borders a forest. If you’re not sure where your gas lines and other underground cables are, call your utility company. In addition, make sure your spot isn’t under power cables. If your pool is under a tree, more leaves and bugs will fall into it. Aside from being unsightly, debris could affect the pool’s chemistry and make it harder to maintain. Further, trees' root systems could get in the way of leveling the site, and even if the tree is a stump it will be difficult to remove.  Setting your pool beyond a tree's farthest branches should be a far enough distance if the tree is established. For younger trees, you can calculate the size of the root system to be on the safe side. Younger trees have thirstier roots, which could extend up to 38 times the trunk diameter. If a young tree's trunk is 6 inches (15 cm) across, its roots could extend over 19 feet (5.8 m).  Most older trees' root systems only extend about as far as its canopy. It is important to make sure that the area where you want to put the pool has good drainage, or you could end up with a swamp in your backyard. Pay attention to how well the water drains after a heavy rain. If possible, avoid areas that stay waterlogged for long periods, or you can divert the water before putting in the pool. Once you’ve chosen a suitable spot, place a stake in the ground at its center. Divide your pool’s diameter by 2 to find its radius, then add 1 foot (30 cm) to the radius. Cut a string to that length, tie it to the stake, and use it to trace the circumference of your work area. Mark the area with stakes or chalk. If your pool is shaped like an oval, use a measuring tape to trace its dimensions onto your work area. Remember to make your perimeter 1 foot (30 cm) longer than your pool on all sides.
تحقق من قوانين البناء المحلية. تجنب خطوط المرافق تحت الأرض وكابلات الطاقة العلوية. ابتعد عن الأشجار وجذوعها. تأكد من أنظمة الصرف الصحي في المنطقة. حدد منطقة بقطر أكبر من حمام السباحة بمقدار 60 سم.