Contra Costa County · Martinez, CA
Plumbers in Martinez, CA
Martinez is in Contra Costa County, California. About 49,000 people live in the ZIP code we cover here, in roughly 20,000 homes, 64% of them single-family detached houses. The biggest share of the housing was built between 1960 and 1979 (33%), and that age decides most of what goes wrong with the plumbing.
- Same-day service when a plumber is available
- 1 ZIP codes covered
ZIP codes we cover in Martinez
94553
Martinez homes and their plumbing
Here is how Martinez's homes break down by year built, based on Census estimates for the covered ZIP codes: before 1940 10%, 1940–1959 16%, 1960–1979 33%, 1980–1999 32%, 2000 or later 8%. 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 Concord, Walnut Creek are covered too.
| Year built | Share of homes |
|---|---|
| Before 1940 | 10% |
| 1940–1959 | 16% |
| 1960–1979 | 33% |
| 1980–1999 | 32% |
| 2000 or later | 8% |
Share of housing units in the covered ZIP codes. Census ACS 2023 5-year estimates.
- Residents in covered ZIPs
- 48,600
- Housing units
- 19,626
- Single-family detached
- 64%
- Owner-occupied
- 72%
- Heated with utility gas
- 70%
- Heated with electricity
- 26%
What goes wrong in Martinez homes
Natural gas in most homes
70% 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
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.
1980s and 90s construction and polybutylene
32% 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
27% of homes in Martinez'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.
Common calls in Martinez
- Gas Line Repair
- Sewer Camera Inspection
- Polybutylene Pipe Replacement
- Whole-House Repiping
- Water Heater Replacement
- Drain Cleaning
- Main Water Line Repair
- Sewer Line Repair
Also available in Martinez: emergency plumbing and every plumbing service.
Martinez at a glance
- County
- Contra Costa County
- Nearest city pages
- Concord, Walnut Creek
- ZIP codes
- 94553
Martinez plumbing FAQ
How old are the homes in Martinez?
In the ZIP codes we cover around Martinez, Census estimates put 27% of homes as built before 1960, 33% from 1960 to 1979, 32% from 1980 to 1999 and 8% in 2000 or later. The largest group is 1960–1979 (33%).
Who licenses plumbers in Martinez, 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 Martinez usually gas or electric?
Census data for the area show 70% of homes heating with utility gas, 26% 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 Martinez homeowners
Nearby areas
Also covered nearby: Pleasant Hill (4 mi), Benicia (5 mi), Port Costa (5 mi), Crockett (7 mi), Lafayette (7 mi), Hercules (8 mi), Rodeo (8 mi), San Miguel (9 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 Martinez, so they may include neighboring communities that share those ZIP codes.
Need a plumber in Martinez?
Same-day service when a plumber is available. One call connects you with a licensed plumber who serves your ZIP.