If you’re hearing strange noises from your pipes, dealing with frequent leaks, or living in an older home, you might be asking yourself: “How much would it cost to replace all my plumbing?” It’s a big question—and a big decision. Replacing your entire plumbing system isn’t just about fixing leaks; it’s about protecting your home’s value, water quality, and long-term safety. You’re not alone, and this guide will walk you through realistic costs, what affects pricing, and how to avoid costly mistakes.
What Does “Replacing All My Plumbing” Actually Mean?
When homeowners say “replace all my plumbing,” they usually mean re-piping the entire house—swapping out old supply lines (hot and cold water) and sometimes drain-waste-vent (DWV) pipes. This is often called a whole-house repipe.
Most repipes focus on supply lines, which carry fresh water under pressure. These are commonly made of:
Copper (common in homes built 1960s–2000s)
Galvanized steel (older homes, prone to rust)
PEX (cross-linked polyethylene) (modern standard)
Drain lines are typically PVC or cast iron and are only replaced if severely corroded or damaged.
💡 Did You Know? According to the U.S. Department of Housing and Urban Development (HUD), homes built before 1970 are more likely to have outdated or failing plumbing systems that may require full replacement.
How Much Would It Cost To Replace All My Plumbing? (2026 Estimates)
The national average cost to repipe an entire house ranges from $4,000 to $15,000, but it can go as high as $20,000+ depending on several factors.
Here’s a breakdown by home size:
Home Size
Average Cost Range
Typical Pipe Material
Small (1–2 BR)
$4,000 – $8,000
PEX
Medium (3 BR)
$6,000 – $12,000
PEX or Copper
Large (4+ BR)
$10,000 – $20,000+
Copper or Hybrid
📌 Source: 2025 data from HomeAdvisor and Angi (formerly Angie’s List) shows PEX repiping averages $3–$8 per linear foot, while copper runs $8–$15 per linear foot.
Key Factors That Affect Your Total Cost
1. Pipe Material Choice
PEX: Flexible, freeze-resistant, easy to install. Most cost-effective.
Copper: Durable, long-lasting, but expensive and labor-intensive.
CPVC: Cheaper than copper but less flexible; used mainly in hot-water lines.
⚖️ PEX vs. Copper: Pros & Cons PEX: ✅ Lower cost ✅ Faster installation ✅ Resists scale and chlorine ❌ Not UV-resistant (can’t be used outdoors exposed)
Copper: ✅ Lasts 50+ years ✅ Recyclable ❌ Prone to theft (scrap value) ❌ Expensive materials + labor
2. Home Size and Layout
Larger homes = more pipe = higher cost. Multi-story homes increase labor due to access challenges.
3. Accessibility
If walls, floors, or ceilings must be opened (and later repaired), expect $1,000–$5,000+ in drywall and finishing costs.
4. Permits and Local Codes
Most cities require permits for full repipes. Fees range from $100 to $500, but skipping them risks failed inspections or insurance issues.
5. Plumber’s Rates
Hourly rates vary by region:
Midwest: $75–$120/hr
West Coast: $120–$200/hr
Northeast: $100–$180/hr
Always get 3+ written estimates.
Step-by-Step: What Happens During a Full Repipe?
Inspection & Quote A licensed plumber inspects your system, checks for leaks, corrosion, and water pressure issues. They’ll recommend materials and provide a detailed scope.
Permit Application Your contractor files for permits (don’t skip this!).
Shut Off Water & Demolition Water is turned off. Small access holes (6”–12”) are cut in walls near fixtures.
Remove Old Pipes Galvanized or polybutylene pipes are removed. Copper may be reused if in good condition.
Install New Pipes PEX is run from the main shutoff to each fixture using a “home-run” manifold system (modern best practice).
Pressure Testing System is pressurized for 24+ hours to check for leaks.
Wall Repair & Cleanup Drywall patches, painting, and debris removal.
Final Inspection City inspector approves the work. Keep this documentation—it adds value to your home.
🔧 Pro Tip: Ask your plumber to use oxygen-barrier PEX if you have a boiler or radiant floor heating—it prevents corrosion in metal components.
When Should You Consider a Full Repipe?
Consider replacing all your plumbing if your home has:
Polybutylene pipes (gray plastic, installed 1978–1995 — known to fail)
Galvanized steel pipes over 50 years old (rust reduces water pressure and contaminates water)
🚨 Warning: Polybutylene piping was involved in a major class-action lawsuit due to premature failure. If you have it, replacement isn’t optional—it’s urgent. Learn more on Wikipedia’s page on polybutylene.
DIY vs. Hiring a Pro: Is It Worth the Risk?
Short answer: Hire a pro. Plumbing involves pressurized systems, code compliance, and potential water damage. One mistake can cost thousands in repairs.
Licensed plumbers carry insurance—if something goes wrong, you’re protected. DIYers often underestimate wall repair, permit rules, and proper slope for drains.
💬 Expert Insight: “I’ve seen homeowners save $2,00 ‘doing it themselves’—then spend $10,000 fixing leaks behind walls,” says Maria Lopez, Master Plumber with 18 years of experience in Phoenix. “Repipe once, do it right.”
FAQ Section
Q1: How long does a full repipe take?
A: Most whole-house repipes take 2 to 5 days. PEX is faster than copper. Add 1–2 days for drywall repair and painting.
Q2: Will my homeowner’s insurance cover plumbing replacement?
A: No, unless sudden damage (like a burst pipe) caused the need. Routine upgrades or aging systems are not covered. However, new plumbing may lower your insurance premiums by reducing risk.
Q3: Can I live in the house during a repipe?
A: Yes, but expect no running water for 1–2 days. Some contractors set up temporary sinks or toilets. Plan accordingly.
Q4: Does repiping increase home value?
A: Indirectly, yes. Updated plumbing makes your home more attractive to buyers, avoids red flags during inspections, and prevents future liabilities. It won’t add dollar-for-dollar value, but it removes a major selling obstacle.
Q5: What’s the cheapest way to repipe?
A: Use PEX tubing and hire a reputable local plumber (not the cheapest bid). Avoid cutting corners on permits or wall repairs—they’ll haunt you later.
Q6: How do I know if I really need a full repipe?
A: Get a video pipe inspection ($150–$300). It shows internal corrosion, cracks, or blockages without guesswork. If >30% of your pipes are compromised, full replacement is often smarter than patching.
Conclusion
So, how much would it cost to replace all my plumbing? For most U.S. homeowners, it’s a $4,000–$15,000 investment that pays off in peace of mind, better water pressure, cleaner water, and long-term savings on repairs. While it’s not a fun expense, it’s one of the smartest upgrades you can make—especially in older homes.
Don’t wait for a flood to force your hand. Get a professional assessment today, compare quotes, and protect your biggest asset: your home.
👉 Found this guide helpful? Share it with a friend who’s dealing with leaky pipes or low water pressure! #HomeMaintenance #PlumbingTips #SmartHomeUpgrade
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