San Mateo County · Daly City, CA
Plumbers in Daly City, CA
Daly City is in San Mateo County, California. About 110,000 people live in the 4 ZIP codes we cover here, in roughly 38,000 homes, 49% of them single-family detached houses. The biggest share of the housing was built between 1960 and 1979 (37%), and that age decides most of what goes wrong with the plumbing.
- Same-day service when a plumber is available
- 4 ZIP codes covered
ZIP codes we cover in Daly City
94014, 94015, 94016, 94017
Daly City homes and their plumbing
Here is how Daly City's homes break down by year built, based on Census estimates for the covered ZIP codes: before 1940 7%, 1940–1959 34%, 1960–1979 37%, 1980–1999 15%, 2000 or later 7%. 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 Francisco are covered too.
| Year built | Share of homes |
|---|---|
| Before 1940 | 7% |
| 1940–1959 | 34% |
| 1960–1979 | 37% |
| 1980–1999 | 15% |
| 2000 or later | 7% |
Share of housing units in the covered ZIP codes. Census ACS 2023 5-year estimates.
- Residents in covered ZIPs
- 110,390
- Housing units
- 37,957
- Single-family detached
- 49%
- Owner-occupied
- 60%
- Heated with utility gas
- 62%
- Heated with electricity
- 34%
What goes wrong in Daly City homes
Pre-1960 homes: galvanized pipe and cast iron
41% of homes in Daly City'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
37% 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
62% 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 calls in Daly City
- Whole-House Repiping
- Sewer Camera Inspection
- Gas Line Repair
- Water Heater Replacement
- Drain Cleaning
- Main Water Line Repair
- Sewer Line Repair
Also available in Daly City: emergency plumbing and every plumbing service.
Daly City at a glance
- County
- San Mateo County
- Nearest city pages
- San Francisco
- ZIP codes
- 94014, 94015, 94016, 94017
Daly City plumbing FAQ
How old are the homes in Daly City?
In the ZIP codes we cover around Daly City, Census estimates put 41% of homes as built before 1960, 37% from 1960 to 1979, 15% from 1980 to 1999 and 7% in 2000 or later. The largest group is 1960–1979 (37%).
Who licenses plumbers in Daly City, 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 Daly City usually gas or electric?
Census data for the area show 62% of homes heating with utility gas, 34% 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 Daly City homeowners
Nearby areas
Also covered nearby: South San Francisco (3 mi), Brisbane (4 mi), Pacifica (5 mi), San Bruno (5 mi), Millbrae (7 mi), Burlingame (9 mi), Montara (10 mi), El Granada (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 Daly City, so they may include neighboring communities that share those ZIP codes.
Need a plumber in Daly City?
Same-day service when a plumber is available. One call connects you with a licensed plumber who serves your ZIP.