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Whole-House Re-Drain Services​

A whole-house re-drain replaces a home’s drain and waste lines from the fixtures to the main sewer connection. Under the Uniform Plumbing Code (UPC), main drain lines are typically sized at 4 inches in diameter, with branch lines running 1.5 to 2 inches, and new re-drains are built to meet that code from the start.

Repair First, Replace Only When Needed

Not every drain problem calls for a full re-drain, and we would rather clean or repair a line than replace it if that is genuinely the better fix. But when a home’s drain pipes are old, damaged in multiple places, or made from a material that has failed across the property, cleaning the same line every few months stops being a real solution. For more on how we diagnose and clean everyday clogged drains, see our full drain cleaning services page.
Needed or not

When a Re-Drain Is Needed vs. Cleaning or Repair

A single clogged drain, even a stubborn one, is usually a cleaning job. A cracked section of pipe found on a camera inspection is often a repair, cutting out and replacing just that section. A whole-house re-drain becomes the right call when a camera inspection shows widespread damage: multiple cracks, bellied sections holding standing water in several spots, root intrusion at more than one joint, or pipe material like old cast iron or clay that has simply reached the end of its service life. Cast iron drain pipe commonly lasts 75 to 100 years before failing, according to a widely cited study of home component lifespans (Source: NAHB, 2007), and many older Inland Empire homes are approaching or past that mark.
We walk every homeowner through the camera footage before recommending a re-drain. If cleaning or a spot repair will genuinely hold, that’s what we recommend. A full re-drain is a bigger job, and our team only suggests it when the alternative is calling us back out every few months for the same recurring backup.
What we install

Materials Used in a Whole-House Re-Drain

Most re-drains we install today use PVC or ABS pipe rated to the same 4-inch main line and 1.5 to 2-inch branch line sizing that the Uniform Plumbing Code calls for. Both materials resist root intrusion and corrosion far better than the cast iron or clay pipe common in older homes across Ontario, Rancho Cucamonga, and the surrounding area.
Fittings, cleanouts, and vents are all installed to the same code standard, which also makes future camera inspections and any maintenance easier down the road.
How it works

What the Re-Drain Process Looks Like

A whole-house re-drain starts with a full camera inspection so our team knows exactly which sections of pipe need to come out and where the new line needs to run.

Inspect & Map the Route

Pull permits where the work requires it, and schedule the excavation or trenchless approach that fits the property.

Remove & Replace

Once the old pipe is exposed or accessed, we remove it and install the new PVC or ABS line, tie in the fixtures, and pressure-test the new system before closing anything up.

Test & Restore

We restore the yard or interior access points as close to their original condition as we can
we walk the homeowner through everything we did before we consider the job finished.
Good to know

Frequently Asked Questions

It depends on the size of the home and how much of the drain line needs replacing, but most whole-house re-drains are completed within a few days rather than weeks. Our team gives a written timeline before starting so there are no surprises about how long the property will be affected.

Some access is usually needed, whether that’s a trench in the yard, an opening in a slab, or access through a wall or crawl space, depending on where the old line runs. We use trenchless methods where the property and pipe condition allow it to limit how much digging is required, and we explain the likely access points before work starts.

A camera inspection is the honest way to answer that question. If the footage shows damage isolated to one section, a spot repair usually solves it. If it shows widespread scaling, multiple cracks, or corrosion throughout the line, a full re-drain is typically the more sensible long-term fix rather than repeated repairs to the same aging pipe.

In most cases, yes. Re-drain work that involves replacing the main drain line typically requires a permit and inspection before the new line is approved. Our team handles that process as part of the job so the work is documented and up to code.

A re-drain replaces the drain and waste lines that carry wastewater out of the home. A repipe replaces the supply lines that bring fresh water in. They’re separate systems, and a home can need one without needing the other, though older properties sometimes need both.

Talk to Us Before You Assume It’s a Full Re-Drain

If your drains keep backing up and you’re not sure whether cleaning, a repair, or a full re-drain is the right call, we’ll run a camera inspection and give you an honest, written answer before any work starts. Request a quote today and our team will follow up the same day to schedule a look at your drain system.