If you’re planning a kitchen remodel, adding a bathroom, or dealing with outdated pipes, you’ve probably asked yourself: “How much does it cost to reroute plumbing?” It’s a smart question—plumbing rerouting can dramatically improve your home’s functionality and value, but costs vary widely based on materials, labor, and complexity. In this guide, we’ll break down everything you need to know to budget confidently and avoid costly surprises.
What Does “Rerouting Plumbing” Actually Mean?
Rerouting plumbing involves changing the path of your home’s water supply or drainage lines. This could mean moving a sink to a new wall, relocating a toilet, or upgrading old galvanized pipes to modern PEX or copper. Unlike simple repairs, rerouting often requires cutting into walls, floors, or ceilings—making it more labor-intensive and expensive.
According to the HomeAdvisor 2023 Cost Guide, the average homeowner spends $650 to $3,500 to reroute plumbing, with most projects landing around $1,800. But your actual cost depends on several key factors we’ll explore next.
Key Factors That Affect Plumbing Reroute Costs
Understanding what drives pricing helps you estimate your project more accurately. Here are the top variables:
1. Type of Plumbing System
- Supply lines (hot/cold water) are generally easier and cheaper to reroute than drain-waste-vent (DWV) lines, which require precise slope and venting.
- Material choice matters:
- PEX tubing: $0.50–$2 per linear foot (most affordable, flexible, and DIY-friendly)
- Copper: $2–$8 per linear foot (durable but pricier)
- PVC/ABS (for drains): $1–$3 per linear foot
💡 Pro Tip: PEX is now the go-to for most reroutes due to its cost-effectiveness and resistance to corrosion—unlike older galvanized steel, which Wikipedia notes is prone to rust and reduced water pressure over time.
2. Accessibility & Home Layout
- Open walls (during a renovation) = lower labor costs.
- Finished walls, concrete slabs, or multi-story homes = higher costs due to demolition and restoration.
- Moving plumbing vertically (e.g., adding a second-floor bathroom) typically costs 20–40% more than horizontal reroutes.
3. Local Labor Rates
Plumbing labor averages $45–$150/hour in the U.S., with major cities like NYC or San Francisco at the higher end. Always get 3+ quotes from licensed plumbers.
4. Permits & Inspections
Most rerouting projects require a plumbing permit ($50–$300). Skipping this risks code violations and insurance issues.
Average Cost Breakdown by Project Type
| Move kitchen sink 5–10 ft | $800 – $2,200 | Includes supply + drain reroute |
| Relocate bathroom toilet | $1,200 – $3,000 | Requires new DWV line & floor work |
| Full kitchen plumbing reroute | $2,500 – $6,000 | Often part of larger remodel |
| Add new bathroom plumbing | $3,000 – $8,000+ | Depends on distance from main stack |
| Whole-house repipe (partial reroute) | $4,000 – $15,000 | Replaces old pipes + reroutes as needed |
Source: Angi (2023), Fixr Cost Reports
Step-by-Step: What to Expect During a Plumbing Reroute
- Consultation & Quote
A licensed plumber inspects your space, reviews blueprints (if available), and provides a written estimate. - Permit Application
Your contractor (or you) submits plans to the local building department. - Demolition
Walls/floors are carefully opened—usually 12–24 inches wide along the new pipe path. - Pipe Installation
New lines are run using appropriate materials. Supply lines are pressure-tested; drains are checked for proper slope (¼ inch per foot). - Inspection
A city inspector verifies code compliance before walls are closed. - Restoration
Drywall, tiling, or flooring is repaired—sometimes by a separate contractor.
⚠️ Warning: Never skip the inspection. Undetected leaks or improper venting can cause mold, water damage, or sewer gas exposure.
Pros and Cons of Rerouting Plumbing
| ✅ Improves layout & functionality | ❌ Disruptive (noise, dust, no water access during work) |
| ✅ Increases home value | ❌ Can cost thousands if walls/floors need major repair |
| ✅ Fixes chronic leaks or low pressure | ❌ Permits and inspections add time (1–3 weeks) |
| ✅ Enables modern fixtures (e.g., tankless water heaters) | ❌ Hidden issues (e.g., rot, pests) may raise costs |
How to Save Money on Your Plumbing Reroute
- Bundle with other renovations (e.g., kitchen or bathroom remodel) to avoid duplicate demolition costs.
- Choose PEX over copper—saves 30–50% on materials and labor.
- Get multiple quotes—prices can vary by 40% between contractors.
- Ask about off-season discounts—some plumbers offer lower rates in winter.
- Do your own cleanup (if skilled)—but never DIY the actual plumbing unless you’re licensed.
FAQ: Your Top Questions Answered
Q: Can I reroute plumbing myself?
A: Minor supply line adjustments (like extending a PEX line for a new fridge) may be DIY-able if you’re experienced. However, drain rerouting, gas lines, or whole-system changes require a licensed plumber. Mistakes can lead to leaks, code violations, or voided insurance.
Q: How long does a plumbing reroute take?
A: Small jobs (e.g., moving a sink) take 1–2 days. Full bathroom additions or whole-house repipes can take 1–3 weeks, depending on complexity and inspections.
Q: Does homeowners insurance cover plumbing rerouting?
A: No—insurance only covers sudden, accidental damage (like a burst pipe). Rerouting for upgrades or remodeling is considered preventive maintenance and is your responsibility.
Q: Will rerouting plumbing increase my home’s value?
A: Yes, especially if you’re adding a bathroom or fixing outdated systems. A well-executed plumbing upgrade can yield a 60–80% ROI at resale, according to Remodeling Magazine’s 2023 Cost vs. Value Report.
Q: What’s the cheapest way to reroute plumbing?
A: Use PEX tubing, keep changes horizontal and short, and schedule work during a planned renovation to minimize wall repairs.
Q: How do I find a trustworthy plumber?
A: Check licenses via your state’s contractor board, read Google/Better Business Bureau reviews, and ask for proof of insurance. Avoid contractors who demand full payment upfront.
Final Thoughts
Knowing how much it costs to reroute plumbing empowers you to make smart, budget-conscious decisions. While prices range from a few hundred to several thousand dollars, the investment pays off in comfort, efficiency, and home value—especially when done right.
Before you start, always get a detailed quote, verify permits, and choose a licensed professional. A properly rerouted system can last decades with minimal issues.
Found this guide helpful? Share it with a friend planning a home renovation! 💧🔧
Your next project just got a lot less stressful.
Leave a Reply