Pretty normal house, just under 200 square meter. But for example the kitchen alone has 2 ceiling lamps with 4 spots each, 6 lamps for countertop lighting and 2 in a wall of cabinets. So that's already 16 lamps in only the kitchen. It's more in the living room.

Even a bathroom easily has 6 or 8 in the ceiling, a few near the mirror etc.