There are several versions of the Saint Joseph prayer to sell a house. Prayerbook.com lists an abbreviated version, which begins "Holy Saint Joseph, Spouse of Mary, be mindful of me, pray for me, watch over me."
The prayer continues, "Guardian of the paradise of the new Adam, provide for my temporal wants. Faithful guardian of the most precious of all treasures, I beseech thee to bring this matter to a happy end if it be for the glory of God and for the good of my soul."
During the prayer, insert the specific prayer request—in this case, to sell a house— after the word "matter." Conclude with the word, "Amen."
Legend says that before reciting the prayer, the homeowner must purchase a small statue of Saint Joseph and bury it in the yard of the home to be sold. Bury the statue no less than three feet from the For Sale sign. Place the statue facing the house and upside down. Recite a novena to Saint Joseph after burying the statue, and then again for the following eight days.
The Catholic Company sells Saint Joseph Home Sale Kits. They include a statue and both a prayer and petition to Saint Joseph. Read both upon burial. The burial instructions follow those of legend, but once the house sells, dig up the statue and proudly display it in a newly purchased home.