The phrase "second storey" refers to the floor of a building that is above the ground floor. It is often called the second floor or the floor above the ground level. Full definition
Several variations were drawn up - the first was turning one of the bedrooms into a staircase and adding a whole second storey to take advantage of the water views. (thehappyhomeblog.com)
Private suites on the ground floor are positioned directly on the beach, second storey apartments boast panoramic views of the island and huts next to the pool benefit from coconut tree shading and peaceful dips in the lagoon... (idealhome.co.uk)
Residents have started building second storeys to expand upwards. (economist.com)