The 88-year-old former president is working in a town hit hard by a 2010 earthquake.
Carter and wife Rosalynn are leading a mission of hundreds of Habitat for Humanity volunteers in the southwestern town of Leogane. The town was the epicenter of the quake. Many people there still have no home or live in terrible conditions.
The former president and former first lady were both taking an active part Monday in the construction of 100 one-room houses on about 14 acres. Families will get to live in the homes rent-free for five years and then will have to pay a modest annual rent to the government.