He was born in Portadown, Northern Ireland.
He moved to Los Angeles in 1998 from Ireland.
[1] Reiher has appeared in television shows such as Lost, Private Practice, Rodney, and Summerland, as well as in the movies Soccer Dog: European Cup, My Big Fat Independent Movie, Hatchetman and Truth about Kerry.
He had also written and produced his own series, Subs, which won a "Make Your Own Pilot" contest with the FX Network.
In 2020, he is starring on the HGTV television show Extreme Makeover: Home Edition.