It deserves a read, not a worry. The 1994 earthquake produced a generation of chimney rebuilds, flashing renewals, and structural repairs across this neighborhood, and thirty years on, that work is itself an aging layer with its own remaining life. An inspection that reports the earthquake era components separately, chimney saddle, counter flashing, and any sistered framing visible from the attic, tells you whether you own a sound repair or a deferred one.
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