How Much Does Repiping a House Cost in LA County? (2026 Guide)

If your home was built before 1970, you probably have galvanized steel water pipes. Galvanized pipes last about 50-75 years depending on water quality. They corrode from the inside out, restricting water flow and eventually failing. If you have rust-colored water or pinhole leaks that keep springing back, galvanized pipes are your culprit.

Whole-house repiping is a major project. It means replacing all the supply lines running through your walls with new pipe. It is expensive, but it is the permanent solution to low water pressure, rust water, and recurring leaks.

Repiping Cost by Material

The cost depends on what material you choose. The two main options are PEX and copper.

Material	Cost per Linear Foot	1,200-1,800 sqft Home	2,000-3,000 sqft Home
PEX	$4-$8 installed	$3,500-$7,000	$5,500-$10,000
Copper	$6-$12 installed	$5,000-$10,000	$8,000-$15,000

Material	Cost per Linear Foot	1,200-1,800 sqft Home	2,000-3,000 sqft Home
PEX	$4-$8 installed	$3,500-$7,000	$5,500-$10,000
Copper	$6-$12 installed	$5,000-$10,000	$8,000-$15,000

Material	Cost per Linear Foot	1,200-1,800 sqft Home	2,000-3,000 sqft Home
PEX	$4-$8 installed	$3,500-$7,000	$5,500-$10,000
Copper	$6-$12 installed	$5,000-$10,000	$8,000-$15,000

Material	Cost per Linear Foot	1,200-1,800 sqft Home	2,000-3,000 sqft Home
PEX	$4-$8 installed	$3,500-$7,000	$5,500-$10,000
Copper	$6-$12 installed	$5,000-$10,000	$8,000-$15,000

PEX is plastic tubing made from cross-linked polyethylene. It is flexible, easy to install, does not corrode, and lasts 50+ years. It is cheaper than copper and faster to install, which saves labor costs. Most plumbers now prefer PEX for new construction and repiping projects.

Copper is traditional rigid pipe. It lasts 50+ years, looks professional, and is what older homes have. It costs more to purchase and more to install because it requires soldering and cutting. Some people prefer it for resale value, but that preference is fading as PEX becomes standard.

For most homeowners, PEX makes more financial sense. The cost difference is significant, and the performance difference is minimal. Both will last decades. The real advantage of copper is purely aesthetic or psychological. In 2026, most appraisers and home inspectors do not care which you use.

What Is Included in a Repipe

A repipe quote should include all of the following:

- Complete replacement of all water supply lines throughout the house - Opening and closing walls as needed to access pipes - New water shutoff valve at the meter or main entry point - Individual shutoff valves for major fixtures (toilets, washing machine, etc.) - Pressure test of the entire system - City inspection and permit fees

What Is NOT Included

Do not assume your repipe covers everything. These items are typically NOT included:

- Drain lines (only supply lines are replaced) - Water heater replacement (though you might want to do it while walls are open) - Drywall beyond basic patching (if you want perfect drywall finish, hire a drywall contractor) - Valve repair or replacement beyond the main shutoff - Any work on existing fixtures or appliances

Ask your plumber for a detailed scope of work before signing. Make sure you understand exactly what is and is not included.

Signs You Need a Repipe

Not all homes need repiping. Here are the signs that yours does.

Rust-colored or discolored water. When you first turn on a tap, especially after the house has been empty, does the water run brown or orange? That is rust from corroded galvanized pipes. As the corrosion worsens, this happens more frequently. Recurring pinhole leaks. You get one small leak fixed. Six months later, there is another leak in a different spot. This is a sign that your pipes are corroding throughout the house. Fixing individual leaks will not solve the problem. You need a full repipe. Low water pressure. Your water pressure is weak throughout the house, not just one fixture. The corrosion buildup inside the pipes is restricting flow. As corrosion worsens, pressure gets lower. Multiple leaks at the same time. If you have leaks in two or three different locations simultaneously, your galvanized pipes are failing. This is a red flag that a repipe is urgent. Insurance company request. Some insurance companies flag old galvanized pipes as a risk and may ask you to repipe as a condition of coverage. If your insurer sends a letter, take it seriously. You are planning major renovations. If you are remodeling your kitchen or bathrooms, opening walls to repipe at the same time makes financial sense. You already have walls open and drywall being done.

Which LA County Cities Have the Most Repiping

Some neighborhoods are worse than others because of age and original water quality.

Lakewood (90040, 90041, 90042, 90043, 90044, 90045, 90046). Built between 1950-1953 as a planned suburban community for returning WWII veterans. Nearly every home in Lakewood has original galvanized pipes that are now 70+ years old. If you live in Lakewood, repiping is not a question of if, but when. Most Lakewood homes will need repiping in the next 5-10 years. Bellflower (90706, 90707). Built in the 1940s-1950s, similar timeline to Lakewood. Galvanized pipes are aging and failing. Hard water at 200-260 PPM accelerates corrosion. Downey (90240, 90241, 90242). 1950s and 1960s construction with original galvanized throughout. Low pressure is common in Downey. Hard water at 180-240 PPM makes it worse. Norwalk (90650, 90651). 1950s built-out. Galvanized pipes are reaching end of life. Compton (90220, 90221, 90222). Older housing stock with original pipes. High hard water adds to corrosion. South Gate (90280). Vintage 1940s-1950s homes with failing galvanized pipes. Long Beach (90800-90815). Older neighborhoods like Bixby Knolls have original pipes needing replacement. Newer areas are better off.

Financing a Repipe

A repipe is expensive, but there are options.

Most plumbers offer financing through third-party lenders. You can often get 12-36 month payment plans with interest rates around 10-15%. Some contractors have in-house financing. Always compare terms.

Some insurance companies offer rebates on premiums if you repipe with certified contractors. Ask your insurer if they participate.

Do not put off a repipe to save money if you have signs of failing pipes. The cost of repiping is far less than the cost of water damage from a burst pipe flooding your walls and ceiling.

Get a Repipe Estimate

If you think you need repiping, call three plumbers and get estimates. Make sure they specify which material (PEX or copper), what is included, and what permits and inspections they will handle.

If you live in Lakewood, Bellflower, Downey, or other areas with aging galvanized pipes, we can connect you with a licensed plumber who specializes in repiping and can give you a fair estimate.