28% of homes in Marion County predate 1980, below the Georgia county median of 38.4%, which ranks 119th of Georgia's 159 counties.
Growth since 2000 added 34% of today's homes. In houses that new, the weak points are washing machine hoses, ice maker lines, water heaters and sump pumps rather than the pipes in the walls.
38% date from 1980 to 1999, the window when polybutylene, a gray flexible plastic supply pipe, was used in some homes. It's prone to leaks at the fittings, so it's worth checking for in a house from those years.
36% of homes are manufactured or mobile homes, above the Georgia county median of 20.9%. Their water lines run under the floor behind the skirting, so a torn skirt or failed heat tape freezes them faster than lines in a site-built house.
The Census counted 16% of homes as vacant, above the Georgia county median of 14%. Empty houses are where a small leak turns into a large claim, because nobody is there to hear it.