Considerations for selecting an indoor spa location
Local building codes pertaining to indoor installation of a portable spa. Adequate space for spa with accessibility for service (Clearance of 3 ft. (1m) around the spa is recommended to permit servicing the unit).
Proper structural support critical. Consult a licensed professional Structural Engineer to determine if the foundation will adequately support the spa for the entire time it will be in place, especially if the spa is to be placed on a second story or higher, balcony, roof or other platform not specifically tied into the main structural support.