"EXTREME MAKEOVER: HOME EDITION" HELPS A MOTHER AND A DAUGHTER WHO BOTH SUFFER FROM A SERIOUS BRAIN MALFORMATION DISORDER AND WHO LIVE IN A REFURBISHED CHICKEN COOP WITH THEIR FAMILY

"Carter Family" -- The Carters of Billings, MT were surprised to receive the news that Ty and the gang will transform their current home of a chicken coop into the home of their dreams in just seven days on "Extreme Makeover: Home Edition," SUNDAY, OCTOBER 21 (8:00-9:00 p.m., ET) on ABC.

Julie Carter suffers from a genetic disorder known as Chiari Malformation, as does her 21-year-old daughter, Jade. She fears her other two daughters may have it as well. Julie and Jade have had several brain surgeries costing over $500,000. This condition has over 85 symptoms -- which makes it very easy to misdiagnose -- and causes depression and chronic fatigue. Julie has made it her passion to spread awareness of the rare disorder and has become a hero to thousands. She writes a monthly newsletter to Chiari patients, providing them support, compassion and valuable information, which she assembles and distributes with her own money. She also started Chiari People of Montana, a support group. With her success, she was recently asked to run the first Chiari Malformation chapter in Billings. This is a bittersweet honor, since her makeshift office is hardly suitable for getting out her newsletters.

Julie is so consumed with helping others that she rarely thinks of her own living situation -- which is a refurbished chicken coup -- but the astronomical medical bills are a regular reminder that there's little chance their house will ever be fixed. From the outside their home looks like a long warehouse; the exterior walls are buckling and some of the windows are cracked, which makes it tough in the brutal Montana winter. They've made the best of the interior, but the cracks in the floor and the unusable space makes heating the place expensive. It's now up to the design team to get this family out of the chicken coop and into a healthy house, and to reward this selfless mother with a state of the art facility where she can run the Billings chapter of Chiari. While Ty and the designers, local builder Jeff Junkert Construction, Inc. and hundreds of volunteers and workers are rebuilding their home, the Carter family will go on vacation at the Hilton Times Square in New York City.

This season every episode of "Extreme Makeover: Home Edition" is going green by incorporating eco-friendly, low-energy and recyclable resources in the builds. On "Carter Family," all windows and patio doors will be made of glass that blocks out harmful UV rays while also enhancing thermal performance. These window accessories can save up to 28% in heating and cooling costs, a definite savings for this family.

The design team for this episode will feature team leader Ty Pennington and designers Michael Moloney, Paul DiMeo, Tanya McQueen and John Littlefield. The series is produced by Endemol USA, a division of Endemol Holding. It's executive-produced by Denise Cramsey. David Goldberg is the president of Endemol USA. "Extreme Makeover: Home Edition" is broadcast with Spanish subtitles via secondary closed captioning. This program carries a TV-PG parental guideline.

This episode of "Extreme Makeover: Home Edition" will be available on ABC.com the day after airing on the network for users to watch online.