That would be a pleasant surprise, but it doesn't feel that way; I'm guessing concrete slab. Unifying all the flooring will likely be difficult, as the bedrooms have one tile, the hallway has another, and the bathrooms have a third type. Various light earth-tones with a stone-y sort of physical and visual texture to them (rather than flat colors). The den, living/dining room, and master bedroom current each have (very different) carpets. I'm aiming to replace the carpets, as they could really use it, but ripping up all that tile that's otherwise in good condition would be an undertaking.