Thinking about moving your shower to a new spot in your bathroom? You’re not alone. Many homeowners tackle this during a remodel—but the big question remains: how hard is it to move shower plumbing? The short answer? It’s not impossible, but it’s rarely simple. Whether you’re dreaming of a spa-like layout or just optimizing space, understanding the complexity, cost, and risks upfront can save you time, money, and stress.
Why Do People Move Shower Plumbing?
Before diving into the “how hard” part, it helps to know why people do it:
- Creating a walk-in shower in a cramped space
- Adding a bathtub-shower combo
- Improving bathroom traffic flow
- Upgrading during a full bathroom renovation
According to the National Association of Home Builders (NAHB), over 60% of bathroom remodels include some plumbing reconfiguration—and shower relocation is among the most common.
How Hard Is It to Move Shower Plumbing? Key Factors
The difficulty depends on three big variables:
1. Your Home’s Construction Type
- Slab foundation: Moving plumbing under concrete requires jackhammering—expensive and disruptive.
- Crawlspace or basement: Much easier access. Pipes can often be rerouted from below.
- Second-floor bathroom: Joists may need notching or drilling, but access via ceiling below (if unfinished) helps.
“On average, moving shower plumbing costs 2–3x more in slab homes than in homes with basements,” says Mike Johnson, licensed plumber and owner of AquaFlow Solutions in Colorado.
2. Distance of the Move
- Minor shift (under 3 feet): May only require extending existing pipes.
- Major relocation (across the room): Likely needs new drain lines, vent adjustments, and potential structural modifications.
3. Local Building Codes
Plumbing must comply with the International Plumbing Code (IPC) or local equivalents. For example:
- Shower drains must slope ¼ inch per foot toward the main stack.
- Vents must be within 5 feet of the drain trap.
Non-compliance can lead to failed inspections—or worse, mold and sewer gas leaks.
Step-by-Step: What It Takes to Move Shower Plumbing
Here’s a realistic breakdown of the process:
Step 1: Turn Off Water & Drain Lines
- Shut off the main water supply.
- Open faucets to drain residual water.
- Safety first: Wear goggles and gloves.
Step 2: Remove Existing Fixtures & Tile
- Demolish tile, drywall, and subfloor around the current shower.
- Expose supply lines (hot/cold) and the 2-inch drain pipe.
Step 3: Plan the New Route
- Use a stud finder and pipe camera (if available) to map obstructions.
- Ensure the new drain path slopes correctly—no flat or upward runs.
Step 4: Cut & Reroute Pipes
- Supply lines: Typically ½-inch PEX or copper. Extend using appropriate fittings.
- Drain line: Must remain 2-inch diameter; use 45° or 90° sweep elbows to reduce clogs.
- Vent: May need to tie into an existing vent stack—never omit this!
⚠️ Tip: Always check for electrical wires or HVAC ducts before cutting into walls.
Step 5: Pressure Test & Inspect
- Fill new supply lines with air or water and hold pressure for 15 minutes (per code).
- Schedule a municipal plumbing inspection before closing walls.
Step 6: Rebuild & Finish
- Install new waterproofing (e.g., Schluter system).
- Lay tile, reinstall fixtures, and caulk seams.
Total time? 3–7 days for pros. DIYers may take 1–2 weeks, especially with learning curves.
Cost Breakdown: What to Expect
| Minor move (<3 ft) | $200–$500 | $800–$1,500 |
| Major move (across room) | $600–$1,200 | $2,500–$5,000+ |
| Slab foundation extra | +$1,000–$3,000 | +$1,500–$4,000 |
| Permits & inspections | $50–$200 | Included in quote |
Source: HomeAdvisor 2024 Bathroom Remodel Cost Guide
💡 Pro Tip: Always get 3 quotes. Ask if the plumber carries liability insurance—unlicensed work can void your homeowner’s policy.
Risks of DIY Shower Plumbing Relocation
While YouTube makes it look easy, mistakes can be costly:
- Leaks behind walls → hidden water damage → mold (EPA estimates 50% of U.S. homes have mold issues linked to plumbing leaks).
- Improper venting → slow drainage or sewer smells.
- Code violations → failed resale inspection.
If you’re not comfortable sweating solder joints or calculating pipe slope, hire a licensed plumber. Your future self (and your home’s value) will thank you.
For more on plumbing standards, see the International Plumbing Code overview on Wikipedia .
Pros vs. Cons: Moving Shower Plumbing
| Better bathroom layout | High cost (especially on slab) |
| Increased home value | Disruptive (weeks without a shower) |
| Custom design freedom | Risk of leaks if done poorly |
| Opportunity to upgrade pipes | Permits and inspections required |
FAQ Section
Q1: Can I move a shower without moving the drain?
A: Technically yes—if you’re only shifting the showerhead or valve a few inches. But if you’re relocating the entire base, the drain must move too. Drains can’t be capped or abandoned in walls per code.
Q2: How much does it cost to move a shower drain?
A: On average, $1,200–$3,500, depending on access, distance, and local labor rates. Slab foundations add $1,000+ due to concrete work.
Q3: Do I need a permit to move shower plumbing?
A: Yes, in most U.S. cities. Plumbing alterations almost always require a permit and inspection. Skipping this risks fines or issues when selling your home.
Q4: Can PEX tubing be used for shower supply lines?
A: Absolutely. PEX is flexible, freeze-resistant, and code-approved for residential water supply. Just ensure you use oxygen-barrier PEX if connected to a boiler or radiant system.
Q5: How long does the entire process take?
A: Pros typically complete it in 3–5 days. DIYers should allow 1–2 weeks, factoring in learning time, drywall repair, tiling, and drying periods.
Q6: What’s the biggest mistake homeowners make?
A: Ignoring venting. Every trap needs a vent within code distance. Without it, you’ll get gurgling drains, slow flow, or sewer odors.
Conclusion
So, how hard is it to move shower plumbing? It’s a moderate-to-difficult project that demands planning, precision, and respect for plumbing codes. While small shifts are manageable for handy homeowners, anything beyond a foot or two—or involving slab foundations—is best left to professionals.
If you’re planning a bathroom remodel, weigh the benefits against the cost and disruption. Done right, a relocated shower can transform your space and boost your home’s appeal.
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