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Sewer Repipe Cost Calculator
Get an instant estimate in 60 seconds. See what an interior drain replacement costs in your market — and how much you save with a specialist vs. a general plumber.
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CSLB #1057926 · Licensed B & C-36 · Serving all of Santa Clara, Alameda, San Mateo & Contra Costa Counties
Estimates based on regional market data and typical job conditions. Final price requires an in-home assessment. Permit fees ($500–$1,500) vary by city and are not included in these estimates.
Common Questions
Interior Drain Repipe Pricing FAQ
How much does an interior sewer repipe cost?
An interior drain replacement typically runs $4,800–$28,000+ depending on the number of fixtures, foundation type, material, and your region. Repipe Champions offers fixed pricing so there are never any surprises.
What is an interior drain repipe?
An interior drain repipe replaces the drain and waste lines inside your home — the pipes that carry wastewater from toilets, sinks, showers, and other fixtures to the main sewer line. This is especially common in older homes with deteriorating cast iron pipes.
How long does a sewer repipe take?
Most interior drain repipes are completed in 1–3 days depending on the number of fixtures and foundation type. Slab foundation homes may take an additional day for concrete work.
Does foundation type affect sewer repipe cost?
Yes — slab foundation homes require concrete cutting and patching to access drain lines beneath the slab, which adds to the project cost. Raised foundation homes with crawl space access are typically less expensive to repipe.
Should I replace cast iron drain pipes?
If your home has original cast iron drain pipes and they are 40+ years old, replacement is strongly recommended. Cast iron corrodes from the inside out, leading to slow drains, backups, and eventually complete pipe failure. Modern ABS pipe is lightweight, corrosion-proof, and lasts 50+ years.
Why is Repipe Champions less expensive?
Repiping is all we do. Our dedicated crews are faster and more efficient than any general plumber billing by the hour. Specialization means lower cost — without any compromise on materials or workmanship.
Our Crew in Action
Licensed repipe specialists serving the Bay Area
