46% of homes in Colorado County predate 1980, close to the Texas county median of 45.8%, which ranks 116th of Texas's 232 counties.
Before 1960 is when 28% of these homes went up. Galvanized supply lines and cast iron drains were standard then, and after 60-plus years both corrode and crack, often out of sight inside a wall or under a slab.
28% 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.
Here 16% of housing is manufactured homes. Check the skirting and the heat tape on the main water line every fall, because that one exposed line is what freezes.
The Census counted 21% of homes as vacant, above the Texas county median of 16.6%. Empty houses are where a small leak turns into a large claim, because nobody is there to hear it.