Reroute vs Repipe: Which Is Right for Your Slab Leak?

The short answer

A reroute leaves old pipes in place and bypasses one leaking line. A repipe replaces all water pipes. Reroute costs $600 to $7,500; a whole-home repipe averages $7,500. Reroute fixes a single leak on a sound system. Repipe is smarter for homes over 50 years old or with repeat failures.

Key takeaways

Reroute targets one leak: It isolates the broken line and runs a new pipe above ground or through walls.
Repipe is a systemic fix: It replaces every water line, eliminating future slab leaks.
Cost gap matters: A reroute can save thousands, but a repipe may avoid future repairs.
Age decides: Galvanized or copper pipes over 50 years old often signal that a repipe is the better long-term choice.

A slab leak forces a tough decision: fix just this leak or overhaul all your plumbing. Rerouting sidesteps the broken pipe under the slab without tearing out the old lines. A repipe guts the entire system and installs brand-new pipes. The right choice depends on what’s leaking, how old your home is, and what you can afford. Here is how to weigh reroute vs repipe, with honest numbers and no surprises.

What is the real difference between a reroute and a repipe?

A reroute and a repipe solve slab leaks in fundamentally different ways. A reroute abandons the leaking pipe under the slab and runs a new line. A repipe replaces every water pipe in the walls and floors. Here is what that means for your home.

A reroute leaves the old pipes alone. The plumber disconnects the leaking line and routes a new PEX or copper pipe through the attic, walls, or ceiling. It fixes one leak without opening the slab.
A repipe removes all old plumbing. Every hot and cold water line gets replaced, often with PEX. This ends future slab leaks but costs more and takes longer.
Rerouting is faster and cheaper when only one line fails. Use our repair method finder to see which approach fits your leak.
Older homes with copper or galvanized pipes often benefit more from a repipe. Learn more at our slab leaks hub.

How do I use the water-meter test to decide between reroute and repipe?

Before you choose a fix, confirm the slab leak with a simple test. The water-meter test takes 15 minutes and costs nothing. Once you know you have a leak, identify whether it is hot or cold, because that changes the reroute approach.

Shut off every water source: faucets, toilets, ice maker, sprinklers. Check inside and outside.
Find your water meter and watch the leak indicator or low-flow dial. Use our slab leak triage tool for step-by-step instructions.
Wait 15 minutes without using any water. If the dial moves, you have a leak.
Identify the line: hot-water leaks are the more common slab leak case. Use our hot or cold line identifier to narrow it down.
A single hot-water leak often makes a reroute sensible. Multiple leaks or old pipes point toward a repipe.

What does rerouting vs repiping cost in 2026?

Costs vary widely, but average numbers help you budget. Rerouting a single line runs $600 to $7,500. A whole-home repipe averages $7,500. Here are the ranges, as of 2026. Costs vary by region, access, and contractor. Ranges on this page are compiled from the sources on our methodology page. Get at least two local quotes.

Reroute cost: $600 to $7,500 for a typical job. Extensive reroutes can reach $15,000. This includes new pipe and access work, but rarely slab opening.
Repipe cost: $1,500 to $15,000 total. The average whole-home repipe is about $7,500. Use our repipe cost calculator to estimate for your home.
What drives the price: home size, number of fixtures, pipe material (PEX vs copper), and local labor rates. High-cost metros can run above these ranges.
Future savings: A repipe eliminates future slab leak repairs, which can run $630 to $4,400 per leak. Over time, a repipe can pay for itself.
Insurance note: Standard HO-3 policies typically cover slab leaks only from a covered event, not wear and tear. A repipe for aging pipes is rarely covered. Confirm with your carrier.

What do homeowners get wrong when choosing reroute vs repipe?

The biggest mistakes come from focusing only on today's cost and ignoring pipe age. A reroute saves money now, but an old system may spring more leaks soon. Here are the traps to avoid.

Ignoring pipe age: Copper lasts about 50 years, galvanized 20-50. If your home is over 50, a repipe is often the wiser long-term move.
Underestimating future leaks: A second slab leak two years after a reroute can cost another $2,000 or more. Two reroutes may cost more than one repipe.
Skipping a whole-home inspection: Ask a plumber to check all accessible pipes for corrosion. Our slab leaks hub explains what to look for.
Assuming insurance will pay: Most policies exclude wear and tear. A repipe is almost never covered. Always confirm with your carrier.
DIY risk: Never open a slab or cut pipes. Use our repair method finder to understand pro options.

When should I pick a reroute over a repipe, and vice versa?

The decision boils down to the leak’s location, your home’s age, and your budget. Here is a clear side-by-side comparison.

Pick a reroute if: the leak is on a single line, your home is less than 30 years old with copper in good shape, and you want a lower upfront cost.
Pick a repipe if: you have had multiple leaks, your pipes are 50+ years old, you have galvanized steel, or you plan to stay in the home long-term.
Location matters: a reroute for a hot-water line is very common. But if the cold line also looks corroded, a repipe may be safer.
Material factors: PEX is cheaper and resists scale. Copper costs more but is time-tested. Our repipe hub has deeper comparisons.

When can I test this myself and when must I call a plumber?

You can do the water-meter test and hot/cold check yourself. That gives you information to discuss with a plumber. But opening walls, cutting pipes, or repiping is pro work. Never attempt it without training because a mistake can flood your home or void insurance.

DIY safe: shut off the water main, read the meter, and note the leak indicator. Use our slab leak triage tool.
Call a licensed plumber for: any work that involves cutting, soldering, or running new water lines. Rerouting and repiping require permits in most areas.
Get at least two quotes after a plumber diagnoses the leak. Post-quote, use our repair method finder to check your options.
If you smell gas or see foundation cracks, call a pro immediately. This is a safety issue, not a DIY moment.

Cost range (as of 2026)	$600 to $7,500	$1,500 to $15,000 (average $7,500)
Leaks fixed	One leaking line	Every water pipe
Best for	A single leak on a healthy system	Homes over 50 years old or with multiple past leaks
Future slab leaks	Possible from other old pipes	Eliminated for the repiped system
Disruption	Minimal: new line run through walls or ceilings	Major: walls opened, pipes replaced over several days

Questions this page answers

Does a reroute fix a slab leak permanently?

A reroute permanently bypasses the leaking line, but the old pipes that remain under the slab can still leak later. It fixes one leak, not the whole system.

How long does a repipe take?

A whole-home repipe typically takes 2-5 days, depending on home size, layout, and access. You will be without water during most of the work. Confirm the timeline with your plumber.

Will my homeowners insurance cover a reroute or repipe?

Standard HO-3 policies typically cover slab leak repairs only when the leak results from a covered event, not ordinary wear and tear. A repipe for old pipes is rarely covered. Confirm with your carrier.

Can I stay in my home during a repipe?

You can stay, but expect no running water for much of the workday. Some families choose to stay elsewhere for the noisiest days. Ask your plumber what to expect.

Is PEX or copper better for a repipe?

PEX costs $0.40 to $2.00 per linear foot installed, while copper runs $2.00 to $8.00. PEX is cheaper and resists corrosion, but copper has a longer track record. Both work well.

How do I know if my pipes are too old for a reroute?

Copper pipes last about 50 years; galvanized 20-50 years. If your home is over 50 and you have had multiple leaks, a repipe is usually the smarter long-term investment.

What is the water-meter test and can I do it myself?

Yes, you can do the slab leak triage test. Shut off all water, watch the meter for 15 minutes. If it moves, you have a leak. Use our [slab leak triage](/slab-leak-test/) tool for steps.

Reroute fixes one leak; repipe overhauls your whole plumbing system. The average whole-home repipe costs $7,500, as of 2026, but gets you new pipes that can outlast your mortgage. Rerouting runs $600 to $7,500 when only one line is bad. Not sure which fits? Run your leak details through our repair method finder for an unbiased recommendation.