Is the entrance of the commercial house higher than the next door?

No need. Nowadays, cities are basically buildings, which are all built under unified planning. The entrance of a building or even a community is at a uniform height. In remote mountainous areas or rural areas, some are bungalows, some are small buildings built by themselves, and the doors of each house are definitely not at the same height. Some families have higher entrance doors than others, and some elderly people think their entrance doors are higher than others. In fact, don't be superstitious, just how high the door suits you.