California · 3 covered places · 3 ZIP codes
Plumbers in Mendocino County, CA
We cover 3 cities and towns in Mendocino County, California, across 3 ZIP codes, including Ukiah, Willits, Gualala. About 50,000 people live in those ZIP codes. 26% of the homes were built before 1960, so galvanized pipe and old cast iron drains are common.
| Year built | Share of homes |
|---|---|
| Before 1940 | 8% |
| 1940–1959 | 18% |
| 1960–1979 | 34% |
| 1980–1999 | 30% |
| 2000 or later | 10% |
Share of housing units in the covered ZIP codes. Census ACS 2023 5-year estimates.
| Place | Residents in covered ZIPs | Built before 1960 |
|---|---|---|
| Ukiah | 33,396 | 29% |
| Willits | 14,627 | 22% |
| Gualala | 2,102 | 5% |
What goes wrong in Mendocino County homes
1960s and 70s homes reaching end of life
34% of the housing here dates from 1960 to 1979. Original copper supply lines in those homes are now 45 to 65 years old, and cast iron drains of that age scale up inside and crack. Seized shutoff valves, pinhole leaks and recurring main-line clogs are common calls. A camera inspection shows the condition of the sewer line before anyone digs.
1980s and 90s construction and polybutylene
30% of homes were built between 1980 and 1999. Polybutylene supply pipe was installed widely in US homes from about 1978 to 1995, so houses from these years are worth checking for gray plastic pipe stamped PB2110, usually visible at the water heater or under sinks. Insurers and buyers often ask about it. See polybutylene replacement.
Pre-1960 homes: galvanized pipe and cast iron
26% of homes in Mendocino County's covered ZIP codes were built before 1960. Houses that old often still have galvanized steel supply lines that rust closed from the inside, and cast iron or clay sewer pipe that cracks and lets roots in. Weak pressure at upstairs fixtures, brown water after a shutoff and slow drains are the usual clues. Typical fixes are whole-house repiping and a sewer camera inspection.
Propane service
15% of homes here use bottled or tank propane for heat, typical of areas beyond the gas mains. Propane water heaters, ranges and generators need correctly sized lines and fittings rated for LP. See gas appliance hookups.
Common plumbing work in Mendocino County
Mendocino County plumbing FAQ
Which towns in Mendocino County do you cover?
3 places: Gualala, Ukiah, Willits. Enter your ZIP code to confirm coverage for your street.
How old are homes in Mendocino County?
Across the covered ZIP codes, Census estimates put 26% of homes as built before 1960, 34% from 1960 to 1979, 30% from 1980 to 1999 and 10% in 2000 or later.
Who licenses plumbers in Mendocino County, CA?
The Contractors State License Board (CSLB) licenses plumbing contractors under the C-36 classification, and its online lookup shows license status.
Housing and heating figures are US Census Bureau ACS 2023 5-year estimates for the ZIP code areas we cover in Mendocino County, combined across places and weighted by housing units. Some ZIP codes extend into neighboring counties.
Need a plumber in Mendocino County?
Same-day service when a plumber is available. One call connects you with a licensed plumber who serves your ZIP.