Mobile Home Repipe Cost (2026)
The mobile home repipe cost in 2026 typically runs $2,500 to $7,000, with most single-wide homes landing near $3,500 and double-wides near $5,500. Repiping a mobile or manufactured home is generally cheaper than repiping a site-built house — the plumbing runs are shorter, there are fewer fixtures, and most of the pipe is accessible under the home rather than buried in walls. But mobile homes have their own quirks: polybutylene pipe (the gray plastic that fails without warning) is extremely common in homes built from the late 1970s through the mid-1990s, belly-board insulation complicates access, and park rules can restrict who does the work. This guide covers realistic 2026 pricing, material choices, and the mobile-home-specific issues that affect your project.
Average Mobile Home Repipe Cost
For a full replacement of hot and cold supply lines in 2026, here is what mobile homeowners typically pay:
| Material | Single-wide | Double-wide |
|---|---|---|
| PEX | $2,500 - $4,500 | $4,000 - $6,500 |
| CPVC | $2,800 - $5,000 | $4,500 - $7,000 |
| Copper | $5,000 - $8,000 | $7,500 - $11,000 |
These ranges include materials, labor, and basic permits. Most mobile home repipes use PEX — it accounts for the large majority of jobs because it is affordable, flexible enough to snake through the tight underbelly space, and far more freeze-resistant than the rigid pipe it replaces. Copper is rare in mobile homes; the cost premium is hard to justify on a home with a shorter structural lifespan.
Single-Wide vs Double-Wide Pricing
Size is the main cost driver. A typical single-wide (14x70 feet) has 1 to 2 bathrooms and a compact plumbing layout — one main trunk with short branches — so a two-person crew can often finish in a single day. A double-wide (28x60 or larger) has 2 to 3 bathrooms, a longer main run down the marriage line where the two halves join, and roughly twice the linear footage of pipe.
| Home type | Typical fixtures | PEX repipe range | Job length |
|---|---|---|---|
| Single-wide (14x60 to 14x80) | 1-2 baths | $2,500 - $4,500 | 1 day |
| Double-wide (24x48 and up) | 2-3 baths | $4,000 - $6,500 | 1-2 days |
| Triple-wide / large modular | 3+ baths | $5,500 - $8,500 | 2 days |
Homes with additions — a site-built bathroom or laundry room tacked onto the original structure — cost more because the addition's plumbing often has to be tied into the new system with creative routing. Mention any additions when getting quotes.
Why Mobile Home Plumbing Is Different
Several features of manufactured housing change how a repipe works:
- Polybutylene is everywhere. If your home was built between roughly 1978 and 1995, there is a strong chance it has gray polybutylene supply pipe. It degrades from the inside out when exposed to chlorine and fails suddenly at fittings. Many insurers surcharge or exclude water damage for polybutylene homes, so repiping can literally pay for itself in insurance savings.
- Undersized pipe. Older mobile homes often used 3/8-inch or 1/2-inch lines throughout. A repipe is the perfect time to upsize the main trunk to 3/4-inch PEX, which noticeably improves pressure when two fixtures run at once.
- Belly board. The underbelly is wrapped in a fabric or plastic belly board holding insulation against the floor. The crew must cut and re-secure sections to access pipes — confirm this repair is in the quote.
- Freeze exposure. Pipes under a mobile home are far more freeze-prone than pipes inside site-built walls. Heat tape on vulnerable runs and proper re-sealing of the belly board are essential, not optional.
- Tighter spaces. Crawlspace height under a mobile home can be 18 inches or less. It is miserable work, which is one reason labor runs higher per linear foot than you might expect for a small home.
PEX vs Copper for Mobile Homes
PEX wins for mobile homes on nearly every axis. It costs roughly half what copper costs, installs in about half the time, flexes through the cramped underbelly without dozens of fittings, and expands slightly if water freezes inside it — a meaningful advantage under a mobile home. PEX-A (expansion-style) is the premium variant and worth the small upcharge for a repipe you want to last 40-plus years.
Copper makes sense only in narrow cases: a high-end modular home you plan to keep for decades, or local code quirks that restrict plastic. For a standard mobile home, the extra $3,000 to $5,000 for copper rarely pays back. CPVC sits in the middle on price but its rigidity is a disadvantage in tight underbelly spaces, and it becomes brittle with age — not ideal for a home that flexes and settles. Compare the broader trade-offs in our PEX repipe cost guide and PEX vs copper comparison.
What the Job Involves
A mobile home repipe is refreshingly straightforward compared with a site-built home. The crew shuts off water at the main (usually at the park pedestal or a yard shutoff), drains the system, and works primarily from underneath. They cut access sections in the belly board, remove the old pipe — often brittle polybutylene or corroded galvanized — and hang new PEX along the frame rails, securing it with proper straps every few feet. Branch lines rise through the floor to each fixture: sinks, toilets, tubs, washing machine, water heater, and exterior hose bibs.
Inside the home, disruption is minimal — a few small access cuts behind toilets or under sinks at most. The water heater connections get new supply lines and shutoff valves, which is also the moment to replace those crusty original angle stops under every sink. A full pressure test follows, then the belly board is re-secured and insulation fluffed back into place. Most single-wides are done in one day; you will have water back by evening.
One detail worth confirming in writing: who repairs the belly board. A proper re-secure with new insulation support straps takes an hour or two; a sloppy tape patch sags within a year, lets insulation fall onto the ground, and leaves pipes exposed to freezing air. Ask the contractor to describe their belly-board repair method in the quote — it separates the mobile-home specialists from the generalists.
Saving Money on a Mobile Home Repipe
- Choose PEX-A. It is the cheapest installed option and the best-performing one for mobile homes — a rare win-win.
- Replace shutoff valves and supply lines too. The incremental cost during a repipe is tiny ($10-$20 per fixture in parts), and old angle stops are a top source of leaks.
- Ask about heat tape. In freeze-prone regions, thermostatically controlled heat tape on exposed runs costs $100-$300 installed during the repipe and prevents the burst pipes that cause the next emergency.
- Bundle the water heater. If your water heater is 10+ years old, replacing it during the repipe saves a separate service call and the connections are already being redone.
- Clear the skirting access. Make sure the crew can get under the home easily — removing stored items from around access panels saves billable time.
- Get 3 quotes. Mobile home specialists often price significantly lower than general plumbers for this work because they do it weekly.
Permits, Parks, and Code Issues
Three administrative items trip up mobile homeowners. First, permits: most counties require a plumbing permit for a full repipe even on a mobile home, typically $100 to $250. Your contractor should pull it. Second, park rules: if you are in a mobile home park, management may require licensed contractors, proof of insurance, and advance notice — and some parks restrict work hours. Check before scheduling. Third, HUD code vs local code: manufactured homes built after 1976 follow the federal HUD code, but repipes must also satisfy local plumbing code. A plumber experienced with manufactured housing knows both; a site-built specialist may not.
If you own the land (not just the home), also confirm where your responsibility ends — in many parks, the park owns the water line up to the home's shutoff, so you are only repiping from that point inward. For general repipe background, our repiping hub and cost to repipe a house guide cover materials and warning signs in depth.
Gray pipe? Low pressure? Get it checked. Polybutylene failures are sudden and destructive. Call (877) 762-1902 for a free repipe estimate from a licensed plumber experienced with mobile and manufactured homes.