California · 8 covered places · 8 ZIP codes
Plumbers in Lake County, CA
We cover 8 cities and towns in Lake County, California, across 8 ZIP codes, including Clearlake, Kelseyville, Lakeport. About 57,000 people live in those ZIP codes. Most homes date from 1960 to 1979, old enough that original water heaters, valves and drains are wearing out.
| Year built | Share of homes |
|---|---|
| Before 1940 | 4% |
| 1940–1959 | 13% |
| 1960–1979 | 32% |
| 1980–1999 | 30% |
| 2000 or later | 21% |
Share of housing units in the covered ZIP codes. Census ACS 2023 5-year estimates.
| Place | Residents in covered ZIPs | Built before 1960 |
|---|---|---|
| Clearlake | 17,101 | 20% |
| Kelseyville | 12,793 | 11% |
| Lakeport | 11,888 | 21% |
| Hidden Valley Lake | 5,721 | 1% |
| Lower Lake | 3,036 | 20% |
| Upper Lake | 2,900 | 28% |
| Nice | 2,417 | 8% |
| Cobb | 1,265 | 37% |
What goes wrong in Lake County homes
1960s and 70s homes reaching end of life
32% 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.
Oil-heated homes
8% of occupied homes here heat with fuel oil, far above the national norm. Many of them make hot water with a tankless coil inside the boiler, which runs the boiler all summer. Plumbers often replace the coil with an indirect tank or a standalone water heater when the boiler is serviced or replaced.
Propane service
25% 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 Lake County
Other covered towns in Lake County
- Clearlake (1 ZIP)
- Cobb (1 ZIP)
- Hidden Valley Lake (1 ZIP)
- Kelseyville (1 ZIP)
- Lakeport (1 ZIP)
- Lower Lake (1 ZIP)
- Nice (1 ZIP)
- Upper Lake (1 ZIP)
Lake County plumbing FAQ
Which towns in Lake County do you cover?
8 places: Clearlake, Cobb, Hidden Valley Lake, Kelseyville, Lakeport, Lower Lake, Nice, Upper Lake. Enter your ZIP code to confirm coverage for your street.
How old are homes in Lake County?
Across the covered ZIP codes, Census estimates put 17% of homes as built before 1960, 32% from 1960 to 1979, 30% from 1980 to 1999 and 21% in 2000 or later.
Who licenses plumbers in Lake 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 Lake County, combined across places and weighted by housing units. Some ZIP codes extend into neighboring counties.
Need a plumber in Lake County?
Same-day service when a plumber is available. One call connects you with a licensed plumber who serves your ZIP.