I am writing from memory and personal experience, not from any book or canons, so please excuse any errors.
You should place an icon on the kitchen or diningroom table with a lighted candle before it. If you have Holy Water, that should also be available on the table. If you don't have the Holy Water, the priest will certainly have some.
You should also prepare a list of family members - living and departed - for whom you wish the priest to offer prayers. Place that on the table, as well.
There is a brief house blessing service that you and the priest will perform. Then you (or your husband) will take the lighted candle and lead the priest through the house, room by room. The priest will bless each room with Holy Water.
The service will then conclude.
It is customary to offer the priest some of the hospitality of your house (food and drink) and, if you can afford it, perhaps a monetary offering (not absolutely essential).
I'm sure someone will correct me if I left anything out.