The closer towns - Sycamore Canyon and Canyon Springs, Mead Valley, Lakeview, Loma Linda, Nuevo, and Perris - sit on the same general housing timeline as Moreno Valley itself, mostly 1980s and '90s construction. In that stock the common failure is the opener: chain drives from that era are at the end of their life, and the logic boards don't talk to newer safety sensors cleanly, which is why a door reverses for no clear reason.
Farther out, toward Colton, Highland, Bloomington, and Rialto, you get more of a mix - some older 1958-to-1970s builds mixed with the newer construction. Older doors in that mix are more likely to be heavier wood-panel or early steel doors on extension springs instead of torsion, which fail differently and need different hardware entirely.
Climate here runs a moderate heat band, which isn't the extreme that cracks doors outright, but it does dry out nylon rollers and stiffen weatherstripping faster than people expect, especially on doors already pushing 30 or 40 years old. Across the roughly 136,012 owner-occupied houses against 250,595 households in this area, most of what gets a service call is an owned home with an original or first-replacement door, not a rental with whatever the landlord last patched together.