Hi, thanks for your interest in this park. This building is a picnic shelter, not a house. No one can live here. You can see in Bing Streetside imagery that there are no walls, only a roof over a concrete slab floor and a picnic table inside. In general, a building inside a park is unlikely to be a house, though there are exceptions. https://www.openstreetmap.org/changeset/168747793 reclassifies this building.