California · 19 covered places · 107 ZIP codes
Plumbers in Santa Clara County, CA
We cover 19 cities and towns in Santa Clara County, California, across 107 ZIP codes, including San Jose, Sunnyvale, Santa Clara. About 1,937,000 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 | 5% |
| 1940–1959 | 18% |
| 1960–1979 | 38% |
| 1980–1999 | 21% |
| 2000 or later | 19% |
Share of housing units in the covered ZIP codes. Census ACS 2023 5-year estimates.
| Place | Residents in covered ZIPs | Built before 1960 |
|---|---|---|
| San Jose | 1,014,813 | 20% |
| Sunnyvale | 153,455 | 23% |
| Santa Clara | 129,521 | 28% |
| Palo Alto | 96,507 | 46% |
| Mountain View | 83,464 | 23% |
| Milpitas | 78,479 | 6% |
| Gilroy | 67,945 | 14% |
| Cupertino | 61,109 | 16% |
| Morgan Hill | 51,517 | 7% |
| Los Gatos | 50,535 | 27% |
What goes wrong in Santa Clara County homes
1960s and 70s homes reaching end of life
38% 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.
Natural gas in most homes
59% of occupied homes here heat with utility gas, so gas water heaters, ranges and dryers are common. That means gas line extensions for new appliances, flexible connector replacements and venting checks when a water heater is swapped. If you smell gas, leave first and call the gas utility from outside. See gas line repair.
Common plumbing work in Santa Clara County
City pages in Santa Clara County
Other covered towns in Santa Clara County
- Alviso (1 ZIP)
- Campbell (3 ZIPs)
- Coyote (1 ZIP)
- Cupertino (2 ZIPs)
- Gilroy (2 ZIPs)
- Holy City (1 ZIP)
- Los Altos (3 ZIPs)
- Los Gatos (4 ZIPs)
- Milpitas (2 ZIPs)
- Morgan Hill (2 ZIPs)
- Mountain View (6 ZIPs)
- Palo Alto (6 ZIPs)
- Redwood Estates (1 ZIP)
- San Jose (57 ZIPs)
- San Martin (1 ZIP)
- Saratoga (2 ZIPs)
- Stanford (1 ZIP)
Santa Clara County plumbing FAQ
Which towns in Santa Clara County do you cover?
19 places: Alviso, Campbell, Coyote, Cupertino, Gilroy, Holy City, Los Altos, Los Gatos, Milpitas, Morgan Hill, Mountain View, Palo Alto, Redwood Estates, San Jose, San Martin, Santa Clara, Saratoga, Stanford, Sunnyvale. Enter your ZIP code to confirm coverage for your street.
How old are homes in Santa Clara County?
Across the covered ZIP codes, Census estimates put 22% of homes as built before 1960, 38% from 1960 to 1979, 21% from 1980 to 1999 and 19% in 2000 or later.
Who licenses plumbers in Santa Clara 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 Santa Clara County, combined across places and weighted by housing units. Some ZIP codes extend into neighboring counties.
Need a plumber in Santa Clara County?
Same-day service when a plumber is available. One call connects you with a licensed plumber who serves your ZIP.