Santa Clara County · Los Altos, CA
Plumbers in Los Altos, CA
Los Altos is in Santa Clara County, California. About 44,000 people live in the 3 ZIP codes we cover here, in roughly 17,000 homes, 87% of them single-family detached houses. The biggest share of the housing was built between 1940 and 1959 (35%), and that age decides most of what goes wrong with the plumbing.
- Same-day service when a plumber is available
- 3 ZIP codes covered
ZIP codes we cover in Los Altos
94022, 94023, 94024
Los Altos homes and their plumbing
Here is how Los Altos's homes break down by year built, based on Census estimates for the covered ZIP codes: before 1940 3%, 1940–1959 35%, 1960–1979 33%, 1980–1999 14%, 2000 or later 16%. With that many older homes, original galvanized supply pipe and cast iron or clay drains are still common, so leaks, rust and root intrusion come up often. Neighboring areas such as Mountain View, Palo Alto, Sunnyvale are covered too.
| Year built | Share of homes |
|---|---|
| Before 1940 | 3% |
| 1940–1959 | 35% |
| 1960–1979 | 33% |
| 1980–1999 | 14% |
| 2000 or later | 16% |
Share of housing units in the covered ZIP codes. Census ACS 2023 5-year estimates.
- Residents in covered ZIPs
- 43,666
- Housing units
- 16,637
- Single-family detached
- 87%
- Owner-occupied
- 85%
- Heated with utility gas
- 77%
- Heated with electricity
- 20%
What goes wrong in Los Altos homes
Natural gas in most homes
77% 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.
Pre-1960 homes: galvanized pipe and cast iron
38% of homes in Los Altos'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.
1960s and 70s homes reaching end of life
33% 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.
Common calls in Los Altos
- Gas Line Repair in Los Altos, CA
- Whole-House Repiping
- Sewer Camera Inspection
- Water Heater Replacement
- Drain Cleaning
- Main Water Line Repair
- Sewer Line Repair
Also available in Los Altos: emergency plumbing and every plumbing service.
Los Altos at a glance
- County
- Santa Clara County
- Nearest city pages
- Mountain View, Sunnyvale, Santa Clara
- ZIP codes
- 94022, 94023, 94024
Los Altos plumbing FAQ
How old are the homes in Los Altos?
In the ZIP codes we cover around Los Altos, Census estimates put 38% of homes as built before 1960, 33% from 1960 to 1979, 14% from 1980 to 1999 and 16% in 2000 or later. The largest group is 1940–1959 (35%).
Who licenses plumbers in Los Altos, CA?
The Contractors State License Board (CSLB) licenses plumbing contractors under the C-36 classification, and its online lookup shows license status.
Are water heaters in Los Altos usually gas or electric?
Census data for the area show 77% of homes heating with utility gas, 20% with electricity. Water heaters often use the same fuel as the home's heat, so utility gas is the most common here, but check the label on your tank before you shop for a replacement.
Guides for Los Altos homeowners
Nearby areas
Also covered nearby: Stanford (6 mi), Portola Valley (7 mi), Atherton (8 mi), Saratoga (8 mi), La Honda (10 mi).
Housing, heating and population figures are US Census Bureau American Community Survey 2023 5-year estimates for the ZIP code areas we cover in Los Altos, so they may include neighboring communities that share those ZIP codes.
Need a plumber in Los Altos?
Same-day service when a plumber is available. One call connects you with a licensed plumber who serves your ZIP.