Leaks, pipes & freezing · Los Angeles
Repiping in Los Angeles, CA
Repiping replaces a home's water supply lines, usually because old galvanized steel has corroded or polybutylene is at risk of failing. Most repipes today use PEX, take two to five days, and are done through small wall openings rather than gutting the house.
- Licensed local plumbers
- The problem explained before work starts
- Price agreed before the job begins
Repiping for Los Angeles homes
Many homes built before the 1960s still have galvanized supply pipe, which rusts from the inside until pressure drops and the water turns brown. Some homes built between the late 1970s and mid-1990s have gray polybutylene pipe, which can fail at fittings without warning.
For the full guide, including what you can safely do before a plumber arrives, see repiping explained.
Repiping in Los Angeles at a glance
- Urgency
- Usually plannable
- Area
- Los Angeles, CA
- Who does the work
- An independent, licensed local plumber
- Permit
- Plumbing permits are issued by the Los Angeles Department of Building and Safety (LADBS).
- Typical steps
- Survey → Quote and permit → Run new lines → Inspect and test
- Availability
- Call now to check plumber availability
Signs you need repiping in Los Angeles
- Low pressure throughout the house, especially on hot
- Rusty or brown water after the water sits overnight
- Repeated pinhole leaks in copper
- Gray plastic supply lines marked PB
- Galvanized pipe visible at the water heater or main
Local conditions
Repiping in Los Angeles: what's different
Many Los Angeles homes built before the 1960s still have galvanized supply pipe, and corroded galvanized is the most common reason for repiping in Highland Park, Silver Lake and Mid-City. Craftsman and Spanish revival homes on raised foundations make it easier, with lines routed through the crawl space.
Hard Southern California water also scales up older lines. Permits come from the Los Angeles Department of Building and Safety, and a repipe is often paired with replacing shutoff valves and fixtures.
- Water and sewer in Los Angeles
- The Los Angeles Department of Water and Power (LADWP) supplies water; LA Sanitation handles sewer service.
- Permits in Los Angeles
- Plumbing permits are issued by the Los Angeles Department of Building and Safety (LADBS).
Los Angeles housing and plumbing
Craftsman bungalows and Spanish revival homes from the 1910s–1940s are common in neighborhoods like Highland Park and Mid-City, many on raised foundations with plumbing in a crawl space.
Neighborhoods and ZIP codes
Plumbers on Thawline cover Los Angeles and Los Angeles County, including Silver Lake, Highland Park, Mid-City, Westchester, Studio City, Eagle Rock. ZIP codes: 90001 · 90002 · 90003 · 90004 · 90005 · 90006.
Other Los Angeles conditions that affect plumbing
- Galvanized and cast-iron pipe: Corroded galvanized supply and cracked cast-iron drains are the most common reasons for repiping and drain replacement.
- Earthquake readiness: California requires water heaters to be strapped against earthquakes, and flexible gas connectors reduce break risk.
- Hard water: Southern California water is hard, so scale builds up in heaters and fixtures.
- Water conservation rules: LADWP enforces watering-day limits during droughts, so leaking irrigation valves, running toilets and slab leaks show up quickly on bills. Many owners also switch to WaterSense fixtures, which California requires for new toilets and faucets sold.
How repiping works in Los Angeles
- 1
Survey
The plumber identifies pipe materials, maps where lines run and plans access points.
- 2
Quote and permit
Repiping typically needs a plumbing permit from the city or county. The plumber pulls it.
- 3
Run new lines
New pipe is fished through walls and floors. Fixtures are switched over one area at a time.
- 4
Inspect and test
The system is pressure tested and inspected before wall openings are patched.
What affects repiping cost in Los Angeles
Every job is priced by the plumber after they see it. These are the things that move the price most. Ask for the price before work starts.
- Number of bathrooms and fixtures
- PEX versus copper
- Number of stories and whether there's basement access
- Wall patching and painting
- Replacing the main water line at the same time
Repiping questions in Los Angeles
How long does a repipe take in Los Angeles?
Is PEX or copper better for repiping?
Can I live in the house during a repipe?
How long does a whole-house repipe take?
Also in Los Angeles
Related
Related plumbing services
Leak detection
Turn off every fixture and watch the water meter's leak indicator.
Learn more
Water line repair
The water service line runs from the curb stop near the street to your house, buried below the frost line.
Learn more
Burst pipe repair
Turn off the main water shutoff first, then open a faucet on the lowest floor to drain the lines.
Learn more
Water heater replacement
A leaking tank or a heater past about 10 years old is usually replaced rather than repaired.
Learn moreNeed repiping in Los Angeles?
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