Concrete pools are very durable but can crack if not properly maintained. The most significant risk is winter weather and low temperatures when water can seep into crevices and freeze. To avoid damage, use the proper winterization chemicals, and don’t completely drain your pool. Concrete pool repairs cost around $75 per linear foot for small cracks.

Infinity pools do require slightly more maintenance than other pools because you’ll need to constantly monitor the water level. If the water level is out of whack, it won’t correctly flow over the edge, which gives the pool its infinity look. 

That said, the rest of the maintenance is largely dependent on the type of material you choose. Concrete needs a little extra care to prevent algae growth, and you will eventually need to resurface it. Fiberglass and vinyl liners are algae-resistant but they’re not as durable.

Yes, you will need building permits for an inground pool, and your pool installation company should pull them for you. The permit filing fee will usually sit between $400 and $1,800, and it should appear on your contract or invoice. You may want to confirm with your contractor that they will pull all necessary permits. You might also need a permit for a new fence, as many municipalities have special fencing requirements for properties with pools. A fence permit costs between $50 and $500. This expense may not be included in your pool installation estimate.

The number of gallons in your pool will determine how much chlorine you’ll need to add to your pool for the first time. Chlorine levels should fall between 1 and 3 ppm. It's crucial to read the instructions on your chlorine packet to determine the number of tablets to put in the water based on your pool's capacity.