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House repiping is the complete replacement of a home's water supply lines. It is recommended when pipes are leaking frequently, corroded, showing pinhole leaks, delivering discolored or metallic-tasting water, or when an inspection finds materials that are failing or no longer safe.

Repiping cost depends on pipe material selected, the size and layout of the home, number of fixtures and bathrooms, ease of access to existing pipes, local labor rates, and any required repairs to walls or finishes. A licensed plumber must inspect the property to provide an accurate written estimate.

Common options are copper, PEX, and CPVC. Copper is durable and heat-resistant but costs more. PEX is flexible, generally less expensive, and resists scale, but may require different fittings. CPVC is affordable and corrosion-resistant but can be brittle in very cold conditions. A plumber can recommend the best choice for your home and budget.

A full repipe usually takes between 2 and 7 days depending on home size, complexity, number of floors, and whether drywall or flooring repairs are required. The timeline is included with your quote and may vary if unexpected issues are found.

Some access work is almost always needed and may require cutting into drywall or ceilings to reach supply lines. Experienced plumbers minimize damage and many contractors include drywall repair and painting options or coordinate with finish-trade professionals for a turnkey result.

Most municipalities require permits for full repiping to ensure work meets local plumbing and building codes. A licensed plumber or contractor typically pulls permits and arranges required inspections, and those permit costs are usually included in your estimate.

In most cases you can remain in the home during repiping, though some water shutoffs will be required and certain areas may be out of service temporarily. If extensive finish work is needed, you may prefer alternative accommodations for comfort.

Reputable plumbing contractors typically offer a warranty on workmanship and use manufacturers' warranties for materials. Warranty lengths vary, so get the terms in writing including what is covered and any homeowner maintenance requirements that preserve the warranty.

Before the initial inspection clear easy access to basements, crawlspaces, utility rooms, and areas under sinks. Make a list of problem fixtures, note any water discoloration or odors, and have utility and appliance manuals available. For the actual repipe, prepare a clean area and protect valuables in work zones.