Houck's first pro coaching experience came with the Los Angeles Rams, where he coached the offensive line from 1983 to 1991.
Houck spent one season as offensive line coach for the Seattle Seahawks in 1992. Seahawks running back Chris Warren logged the first 1,000-yard rushing season of his career with Houck tutoring his blockers.
Houck spent the next nine years coaching the offensive line for the Dallas Cowboys. At times during Houck's tenure the Cowboys' line was one of the most dominant in the history of the game. The 203 sacks they allowed in nine years under Houck were the fewest of any NFL team in that span. Six offensive linemen earned 22 trips to the Pro Bowl under Houck, including Larry Allen (7), Nate Newton (5), Erik Williams (4), Ray Donaldson (2), Mark Stepnoski (2) and Mark Tuinei (2). Hall of Fame running back Emmitt Smith earned a pair of rushing titles during Houck's tenure, and rushed for over 1,000 yards every season. He was also the assistant head coach from 1994 to 1997.
After the firing of Chan Gailey in 2000, he was considered as one of the candidates to take over the head coaching duties of the Dallas Cowboys, which eventually went to Dave Campo.[2]
With the San Diego Chargers from 2002 to 2004, Houck transformed one of the league's worst offensive lines to one of the best. Running back LaDainian Tomlinson rushed for more than 1,300 yards in each of Houck's three seasons with the team. With five new starters on the line in 2004, the Chargers ranked tenth in total offense and sixth in rushing. The Chargers allowed fewer than 25 sacks per season under Houck.
Houck was hired to work for the Miami Dolphins head coach Nick Saban. During his first year with the Dolphins in 2005, Houck's offensive line ranked fourth in the NFL in fewest sacks allowed. In 2007, Houck was reunited[vague] with then Dolphins head coach Cam Cameron. Houck and Cameron worked together in San Diego when Cameron was offensive coordinator for the Chargers.