If you’ve noticed low water pressure, discolored water, or frequent leaks, you might be facing a full plumbing system failure. Replacing your home’s entire plumbing system—often called a “whole house repipe”—is a major but sometimes necessary investment. So, how much does it cost to replace whole house plumbing? The answer depends on several factors, from your home’s size to the pipe material you choose. In this guide, we’ll break down real-world costs, timelines, and what to expect—so you can make an informed decision without overspending.
What Is Whole House Plumbing Replacement?
A whole house plumbing replacement (or “repipe”) involves removing all existing water supply lines and installing new ones throughout your home. This typically includes pipes that deliver fresh water from the main line to every faucet, shower, and appliance. It does not usually include sewer or drain lines, which are part of the waste system and handled separately.
According to the U.S. Department of Housing and Urban Development (HUD), homes built before 1970 often contain outdated materials like galvanized steel or polybutylene pipes—both known for corrosion and leaks. If your home falls into this category, a repipe may not just be wise—it could be urgent.
How Much Does It Cost To Replace Whole House Plumbing in 2025?
The national average cost to replace whole house plumbing in 2025 ranges from $4,000 to $15,000, with most homeowners paying around $8,000–$10,000. However, prices can climb as high as $20,000+ for large homes or complex installations.
Here’s a detailed cost breakdown based on key variables:
1. Home Size
| Under 1,000 | $4,000 – $7,000 |
| 1,000 – 2,000 | $7,000 – $12,000 |
| 2,000 – 3,000 | $10,000 – $16,000 |
| Over 3,000 | $15,000 – $25,000+ |
2. Pipe Material
The type of pipe you choose significantly impacts cost and longevity:
- PEX (Cross-linked Polyethylene): $0.40–$2.00 per linear foot
Pros: Flexible, freeze-resistant, easy to install.
Cons: Not suitable for outdoor UV exposure.
Best for: Most modern repipes—cost-effective and durable. - Copper: $2.50–$8.00 per linear foot
Pros: Long-lasting (50+ years), recyclable, high resale value.
Cons: Expensive, labor-intensive, susceptible to theft. - CPVC (Chlorinated Polyvinyl Chloride): $0.50–$2.50 per linear foot
Pros: Resistant to corrosion, good for hot water.
Cons: Brittle in cold climates, less flexible than PEX.
💡 Expert Insight: “PEX has become the go-to for repiping in the U.S. due to its balance of cost, durability, and ease of installation,” says Michael Johnson, a licensed master plumber with 22 years of experience in California.
3. Labor Costs
Labor typically accounts for 60–70% of the total repipe cost. Rates vary by region:
- Midwest/South: $45–$75/hour
- West Coast/Northeast: $80–$120/hour
Most repipe jobs take 2–5 days for a standard home, depending on accessibility and wall repairs needed.
What Factors Increase Repipe Costs?
Several hidden or unexpected factors can inflate your final bill:
- Wall & Floor Repairs: Pipes run behind walls. After installation, drywall, tile, or flooring must be restored. This adds $1,000–$4,000.
- Permits: Most municipalities require plumbing permits ($100–$500). Skipping this risks fines or failed inspections.
- Accessibility: Finished basements, slab foundations, or multi-story homes increase labor time.
- Emergency Repairs: If you’re repiping due to a burst pipe or contamination, you may pay premium rates.
⚠️ Tip: Always get 3 detailed quotes from licensed plumbers. Ask if the estimate includes wall patching, permits, and disposal of old materials.
Step-by-Step: What to Expect During a Whole House Repipe
- Inspection & Quote (Day 1)
A plumber inspects your current system, checks for leaks, and recommends materials. Request a written scope of work. - Permit Application (Day 2–3)
Your contractor files for permits. Don’t skip this—unpermitted work can void home insurance.
- Shut Off Water & Remove Old Pipes (Day 1 of Work)
Water is turned off. Old pipes are cut out. Expect noise and temporary water disruption. - Install New Pipes (Day 2–3)
New PEX or copper lines are run from the main supply to each fixture. Minimal wall cutting is used with modern techniques. - Pressure Testing & Inspection (Day 4)
The system is pressurized to check for leaks. A city inspector verifies code compliance. - Wall & Floor Restoration (Day 4–5)
Drywall is patched, sanded, and primed. Tile or flooring is reinstalled if needed. - Final Walkthrough
Test all faucets, showers, and appliances. Confirm no leaks and proper water pressure.
PEX vs. Copper: Which Is Better for Repiping?
| Cost | Lower | 2–3x more expensive |
| Installation Speed | Faster (fewer fittings) | Slower (soldering needed) |
| Lifespan | 40–50 years | 50–70+ years |
| Freeze Resistance | High (expands without bursting) | Low (can burst) |
| Environmental Impact | Not recyclable | Fully recyclable |
| Resale Value Boost | Moderate | High |
For most homeowners, PEX offers the best value. But if you’re in a high-end market or planning to sell soon, copper may add perceived value. Learn more about plumbing materials on Wikipedia .
FAQ: Common Questions About Whole House Repiping
Q1: How long does a whole house repipe take?
A: Most homes take 2 to 5 days. Larger homes or those with complex layouts may take up to a week. You’ll have limited water access during this time, so plan accordingly.
Q2: Can I stay in my house during the repipe?
A: Yes, in most cases. However, you won’t have running water for 1–2 days. Some families choose to stay with relatives or book a short hotel stay for comfort.
Q3: Does homeowners insurance cover repiping?
A: Generally, no. Insurance covers sudden damage (like a burst pipe), not preventative upgrades. However, if repiping is due to a covered peril (e.g., polybutylene pipe failure), partial coverage may apply—check your policy.
Q4: How do I know if I need a full repipe?
A: Signs include:
- Rusty or discolored water
- Frequent leaks in multiple areas
- Low water pressure that doesn’t improve with cleaning
- Home built before 1980 with original pipes
A camera inspection can confirm pipe condition.
Q5: Will repiping increase my home’s value?
A: Indirectly, yes. While it won’t add dollar-for-dollar value, a modern plumbing system makes your home more attractive to buyers and avoids red flags during inspections.
Q6: Can I repipe just part of my house?
A: Yes—called a “partial repipe.” This is common for kitchens or bathrooms. But if your entire system is outdated, a full repipe prevents future issues and is often more cost-effective long-term.
Conclusion
Replacing your whole house plumbing is a significant investment, but it’s one that pays off in peace of mind, water quality, and long-term savings on repairs. On average, you can expect to spend $4,000–$15,000, with PEX offering the best balance of affordability and performance for most U.S. homeowners.
Before you hire a contractor, verify their license, insurance, and reviews. Ask for a detailed contract that includes cleanup and wall restoration. And remember: this isn’t a DIY project—improper installation can lead to leaks, mold, or code violations.
Found this guide helpful? Share it with a friend who’s dealing with old pipes—or pin it for later! Your next home upgrade starts with the right information. 💧🏠
Leave a Reply