Singer is honorary chair at nonprofit group.

Cher has signed on as honorary chair of Raise the Roof, a new charitable initiative from Habitat for Humanity and Clear Channel Entertainment, it will be announced Monday (Aug. 16).

Under the Raise the Roof program, artists help in the construction of houses for needy families. Blink-182, John Mayer and Linkin Park are among those who have participated so far; later this month, the Dave Matthews Band will help build a house in Houston.

Cher became involved in Habitat for Humanity last spring when the nonprofit organization dedicated a house in her name in Minneapolis. Cher visited the construction site and met with the single mother and child who would be the homeowners.

Habitat for Humanity, based in Americus, Ga., is dedicated to building houses for low-income families. The organization says that by the end of 2005, it will have built about 200,000 houses.

"It's a cause all artists can get behind because it provides an opportunity to make a tangible, tremendously powerful impact on someone else's life and in the communities where they entertain," Cher says in a statement.