Established in 2007 as a transmission repair and general automotive service facility, Paul Harris and  Mike McNairy, have established one of the top automotive repair facilities in Douglas County under the name of “H & M Transmission and Automotive, LLC.  In 2010, they entered the auto body repair world by establishing “H&M Collision and Auto Body.”  They operate the business at 500 2nd Street in Castle Rock, Colorado.  Paul Harris, an ASE Master Technician with 25 years of experience and a quarter mile drag racer manages the day to day operations.  Mike McNairy, with 21 years of military experience in the United States Air Force, 9 years of retail experience, and an avid automotive restoration hobbyist, provides the administrative, marketing, and sales support.


“Develop and operate Douglas County’s Premier auto repair facility”


“Provide customers within Douglas County and beyond the best, most reliable and expedient auto and truck repair service, by using the highest quality parts and service with guaranteed vehicle return time in 72 hours.  We will meet our customer’s needs with the most modern diagnostic equipment, best educated employees and using a team approach to develop a family-like customer base.  We will provide full service capability, and specialize in transmission and auto body repair for all applications from daily driver to heavy tow and race.