How do you know if a house needs repiping?

This site cannot tell you, and a single visit may not either. Ask the plumber what evidence points that way: how many leaks, where, and what they found. Then have other plumbers look at the same evidence. Agencies in New York and Washington both point to three written bids or estimates.

Does repiping a house need a permit?

Often, but it depends where you live. Chicago requires a permit for removing and replacing a water pipe, while stopping a leak does not need one. Portland requires permits for some replacements with concealed connections. Check permit or no permit and ask your building department.

Can insurance pay for a repipe after a leak?

This site found no rule saying so, and it may vary by state and policy. Texas's insurance guide names sudden and accidental water release as typically covered, while a continuous leak is not. Ask your agent what your policy says before signing anything. See insurer or plumber first.

Can wait / Repair the leak or Repipe the house

Repair the leak or repipe the house?

To repipe a house or just repair the leak is a question for your plumber, not this site. Start by assuming a repair until someone can show you, in writing, why a whole-house job is the better deal.

Updated November 4, 2026. Sources are listed at the foot of this page.

Find your line

If this is the first leak and nobody has shown you a patternRepair the leakAsk what evidence would make a repipe worth discussing, and when to revisit it.
If you have had repeat leaks and written records of themRepipe the houseRecords turn a sales pitch into a real question. Ask each plumber to read them.
If one plumber says repipe and another says repairRepair the leakUntil they can explain the disagreement, buy time. See second opinion or go ahead.
If the quote comes with a same-day discount or in-house financingRepair the leakDo not sign under pressure. The FTC warns about both. A repair buys comparison time.
If several written quotes independently point to the whole systemRepipe the houseAgreement across written quotes is about the best evidence a homeowner can get.

Blue and white water lines between ceiling joists — Plastic water lines in a basement ceiling.

How do the two jobs compare as decisions?

	Repair the leak	Repipe the house
2023 price figure	Leak repair $150 to $450	New plumbing for a home $4,000 to $12,000
Scope to pin down	Which leak, which fix	Which lines, which rooms, which walls
Permit	Ask; Chicago says stopping a leak needs none	Ask; Chicago requires one for replacing pipe
Payment approach	Pay when done and satisfied	Stage payments matched to finished work
Question to press	Could this happen again soon?	What is the evidence for the whole house?

Sources for this table: Leak and whole-home figures, Chicago permit guide, FTC home repair guide

Which facts would push this one way or the other?

Water is running now: read shut it off or wait. Never force a valve you cannot turn; call the water utility's emergency line.
Your water service may be lead: EPA suggests asking your water utility first, then a licensed plumber if the utility has no information.
A leak has been running for a while: a Texas insurance guide excludes continuous leaks. Ask your agent before assuming anything.

What will you pay, and how can you compare it fairly?

The dated figures are from Bob Vila's survey summary, which leans on HomeAdvisor and was updated in June 2023, so a 2023 picture of national prices. Leak repair: $150 to $450. A slab leak: $500 to $4,000. New plumbing for a whole home: $4,000 to $12,000. Treat it as possibly out of date. Your region and your house may land outside those ranges. No figure was read that compares repeat repairs against one repipe over time, so ask each plumber to show that math on your house.

Compare what each quote says, not only the total. Per the FTC, an estimate on paper names the work, materials, end date and cost. The agency also advises holding money back until the work is done, and wants you to shop around before taking financing through a contractor. Some home repair scams end in a loan against the home.

Deposit rules differ. In California the limit is the lesser of $1,000 or 10 percent of the price, as of November 2026. Maryland's limit for home improvement contractors is one-third of the price, as of November 2026. New York requires progress payments to go in escrow or be bonded. See deposit or none. Elsewhere, expect different terms.

Close view of a rusted pipe with a corroded hole — A rusted pipe with a hole through its wall.

Who should answer for a job this size?

Ask who will do the work and how you can check them. Washington requires plumbers to be state certified and plumbing contractors to be licensed as businesses. Illinois licenses through its public health department and requires plumbing contractors to register and carry insurance. See state rules for more, and ask the plumber who pulls the permit. California contracts must say who gets it, and changes need a signed written change order.

The pipe material will come up. Ask why this plumber prefers it for your house; this site gives no verdict. If the names are new, PEX and copper are both shown at Plumbing Supply and More, a vendor run by the same team as this site, so you can see what a quote is describing. Buying there is not part of this decision.

Words to use

"What are you seeing that points to the whole house and not just this one leak?"

"If this leak gets repaired today, what should make me call you back about a repipe?"

"Please put the pipe type, the walls you will open and the patching in the written quote."

"Who pulls the permit, and does an inspector look at it before the walls close?"

Also asked

How do you know if a house needs repiping?: This site cannot tell you, and a single visit may not either. Ask the plumber what evidence points that way: how many leaks, where, and what they found. Then have other plumbers look at the same evidence. Agencies in New York and Washington both point to three written bids or estimates.
Does repiping a house need a permit?: Often, but it depends where you live. Chicago requires a permit for removing and replacing a water pipe, while stopping a leak does not need one. Portland requires permits for some replacements with concealed connections. Check permit or no permit and ask your building department.
Can insurance pay for a repipe after a leak?: This site found no rule saying so, and it may vary by state and policy. Texas's insurance guide names sudden and accidental water release as typically covered, while a continuous leak is not. Ask your agent what your policy says before signing anything. See insurer or plumber first.

Next decision in can waitGet a second opinion or go ahead?

Sources

Hiring a Plumbing Contractor? Hire Smart! written bids, plus warnings, Washington
How Much Does a Plumber Cost? ranges for leaks, slabs, whole homes
How To Avoid a Home Improvement Scam paying in stages; financing cautions
CSLB on contracts California deposit cap, permits, change orders
MHIC contracts Maryland one-third deposit limit
New York AG hiring guide New York escrow and three estimates
Basic information about lead in drinking water whom to ask about lead
TDI home insurance guide Texas covered and uncovered water losses
Chicago permit guide Chicago leak and pipe permit line