The sentence was handed down Tuesday by a court in the West Bank town of Hebron, but it may be unlikely to be carried out.
Prosecutors say the defendant sold to Israelis land that did not belong to him in the village of Beit Omar near Hebron.
The Palestinian Authority considers the sale of Palestinian land to Israelis to be treason.
Palestinian President Mahmoud Abbas must approve the sentence for it to be carried out. He has withheld approval in many other death penalty cases.
Agencies