The show is called "Flip it Forward" and was to debut in October. If would have featured twins David and Jason Benham buying and renovating real estate.
After the network announced the show was upcoming, the lobbying group Right Wing Watch labeled David Benham an "anti-gay extremist" and reported on quotes he made about homosexuality.
HGTV issued a statement Wednesday saying it is "not moving forward" with the series. The network said it wouldn't explain why.
Benham's representative says he'll comment later.