New Enough to Be Built for Central Air From the Start
Auburn Hills incorporated in 1983, and its major building wave followed quickly -- the Palace of Auburn Hills opened in 1988, and the Chrysler Technology Center and Headquarters complex was completed between 1993 and 1996 -- meaning much of the city's housing is newer than most of the surrounding service area and was likely built with central air already standard.
Original 1980s-90s Equipment Is Now Reaching Replacement Age
Systems installed during that first wave of 1980s and 90s construction are now old enough to be reaching typical replacement age, even though the ductwork itself, being original to the build, usually doesn't need the retrofit work older Oakland County homes require.
HVAC Project Paths in Auburn Hills
What an Auburn Hills Estimate Should Cover
Given how much of Auburn Hills was built in that same 1980s-90s window, an estimate should focus on equipment replacement and efficiency upgrades rather than duct retrofits, which are less often needed here than in older parts of the service area.