Vastu suggests that the entrance of the shop must be kept clean and wide. It should also be open from any obstacles like poles, trees etc. Any stagnancy of water can block the flow of positive energy.
Slope towards the entrance is considered inauspicious.
If there is a single main entrance door, it should be kept on the East or North direction and South direction should be avoided.
North or Northeast are favourable for financial gains.
A toilet next to the main entrance should be avoided as it could result in incurring debts.