All in-ground swimming pools with a depth of 24 inches or more require a building permit from the city. In order to obtain the permit, you need to complete pool, plumbing, and mechanical permit applications (as applicable) and submit engineered drawings of the proposed pool. Underground pools can be constructed within the required setback areas; however, they cannot be constructed within easement areas. A site plan showing the proposed pool location and proposed access point for the installation must also be supplied.