Alameda County · Hayward, CA
Plumbers in Hayward, CA
Hayward is in Alameda County, California. About 192,000 people live in the 7 ZIP codes we cover here, in roughly 63,000 homes, 54% of them single-family detached houses. The biggest share of the housing was built between 1940 and 1959 (32%), and that age decides most of what goes wrong with the plumbing.
- Same-day service when a plumber is available
- 7 ZIP codes covered
ZIP codes we cover in Hayward
94540, 94541, 94542, 94543, 94544, 94545, 94557
Hayward homes and their plumbing
Here is how Hayward's homes break down by year built, based on Census estimates for the covered ZIP codes: before 1940 6%, 1940–1959 32%, 1960–1979 28%, 1980–1999 22%, 2000 or later 13%. 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 San Leandro, Fremont, Redwood City are covered too.
| Year built | Share of homes |
|---|---|
| Before 1940 | 6% |
| 1940–1959 | 32% |
| 1960–1979 | 28% |
| 1980–1999 | 22% |
| 2000 or later | 13% |
Share of housing units in the covered ZIP codes. Census ACS 2023 5-year estimates.
- Residents in covered ZIPs
- 192,439
- Housing units
- 62,878
- Single-family detached
- 54%
- Owner-occupied
- 55%
- Heated with utility gas
- 65%
- Heated with electricity
- 29%
What goes wrong in Hayward homes
Pre-1960 homes: galvanized pipe and cast iron
37% of homes in Hayward'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.
Natural gas in most homes
65% 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.
1960s and 70s homes reaching end of life
28% 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 Hayward
- Whole-House Repiping
- Gas Line Repair
- Sewer Camera Inspection
- Water Heater Replacement
- Drain Cleaning
- Main Water Line Repair
- Sewer Line Repair
Also available in Hayward: emergency plumbing and every plumbing service.
Hayward at a glance
- County
- Alameda County
- Nearest city pages
- Fremont
- ZIP codes
- 94540, 94541, 94542, 94543, 94544, 94545, 94557
Hayward plumbing FAQ
How old are the homes in Hayward?
In the ZIP codes we cover around Hayward, Census estimates put 37% of homes as built before 1960, 28% from 1960 to 1979, 22% from 1980 to 1999 and 13% in 2000 or later. The largest group is 1940–1959 (32%).
Who licenses plumbers in Hayward, 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 Hayward usually gas or electric?
Census data for the area show 65% of homes heating with utility gas, 29% 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 Hayward homeowners
Nearby areas
Also covered nearby: San Lorenzo (4 mi), Union City (4 mi), Castro Valley (5 mi), Newark (8 mi), Pleasanton (11 mi), Dublin (11 mi), Sunol (11 mi), Menlo Park (12 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 Hayward, so they may include neighboring communities that share those ZIP codes.
Need a plumber in Hayward?
Same-day service when a plumber is available. One call connects you with a licensed plumber who serves your ZIP.