House Repiping Cost Calculator — Full Replacement Estimate
Planning a repipe? Whether you have leaky old copper pipes or outdated galvanized steel, replacing your entire plumbing system is a massive job. Use this House Repiping Cost Calculator to determine your budget based on your home's square footage, material choice, and local labor rates.
Repiping is the process of replacing the hot and cold water supply lines in a building. It's often necessary when pipes become corroded, leading to pinhole leaks, low water pressure, or discolored water. I've updated this tool with 2024 and 2025 market pricing for PEX, Copper, and CPVC to help you avoid budget surprises.
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Whole Home Repipe Calculator
*Estimates include labor and basic materials.
PEX vs. Copper: Pros and Cons
Choosing the right material is the biggest factor in your final quote. Here is a breakdown of why homeowners choose one over the other.
| Feature | PEX (Plastic) | Copper (Metal) |
|---|---|---|
| Cost | Lowest ($) | Highest ($$$) |
| Installation | Fast & Flexible | Slower (Soldering) |
| Lifespan | 30–50 Years | 50–70 Years |
| Freeze Resistance | High (Expands) | Low (Bursts Easily) |
| Corrosion | Immune | Prone to Acidic Soil/Water |
What Drives Repiping Prices?
A "simple" repipe often turns into a complex project. Here is what determines the final number on your estimate:
- Fixture Count: Every sink, toilet, tub, and outdoor spigot counts as a "fixture." The more fixtures, the more pipe and labor are required.
- Access Complexity: If your home has a crawlspace or a basement, labor is cheaper. If you have a slab foundation, the plumber may have to go through the attic or cut into the slab, increasing costs by 40%.
- Drywall Repair: I always remind users that plumbers are NOT drywallers. Most repiping quotes do not include the cost of patching the dozen holes they'll likely cut in your walls.
- Permits: Most cities require a plumbing permit and inspection, costing anywhere from $200 to $800.
5 Signs You Need a Repipe
- Multiple Pinhole Leaks: If you've patched more than two leaks in a year, the system is failing.
- Rusty/Red Water: A clear indicator that your iron or galvanized pipes are corroding from the inside.
- Low Water Pressure: Sediment buildup inside old pipes restricts flow.
- Old Materials: If your home was built before 1970 and has galvanized pipes, or used Polybutylene (Quest) piping, you're on borrowed time.
- Water Smells/Tastes Metallic: Often caused by pipe corrosion leaching into your drinking water.
Repiping FAQ
Can I live in the house during a repipe?
Yes, but you will be without water during work hours (usually 8 AM – 5 PM). Most plumbers will ensure you have water restored every evening.
How long does it take?
An average 3-bedroom home takes 2 to 4 days for the plumbing, plus another 2 days for drywall and paint.
Does repiping prevent pinhole leaks?
Yes. Replacing old, corroded metal pipes with PEX or new copper eliminates existing leaks and prevents the chemical corrosion that causes pinhole leaks in older systems.
What is the best material for repiping?
PEX is widely considered the best value due to its flexibility, lower cost, and resistance to scale buildup and freezing. Copper is still used for high-end homes or where required by local code.
Will repiping increase my home value?
Absolutely. Having a whole-house repipe is a major selling point. It gives buyers peace of mind that they won't face expensive water damage or plumbing failures soon after moving in.