Whole-House Repiping Cost in 2026: What to Expect

The biggest driver of repiping cost is total pipe footage and the number of fixtures. A 1,000 sq ft one-bath home might have 300-400 linear feet of supply pipe. A 3,000 sq ft home with 4 baths can have 1,000+ linear feet. Each bathroom adds roughly $800-$1,500 to the cost. The number of fixtures - toilets, sinks, tubs, showers, hose bibs - matters as much as square footage.

CPVC (rigid plastic) is the least expensive at $0.50-$1.00 per linear foot in materials. PEX (cross-linked polyethylene) costs $0.50-$1.50 per linear foot but installs faster due to flexibility. PEX-A (Uponor/Wirsbo brand) costs slightly more but expands for fittings - requiring no solvent or crimp connections - which many plumbers prefer. Copper costs $3-$8 per linear foot and remains the premium choice for longevity and resale value.

Accessible pipe runs in unfinished basements, crawl spaces, and open attics are least expensive. Pipes in finished walls require cutting drywall, routing new pipe, and patching - adding $500-$2,000 in drywall costs alone. Two-story homes with pipes running between floors in finished spaces cost significantly more. The method - full repipe vs. trenchless - affects access costs.

Galvanized steel pipe (common in pre-1970 homes) is the most common reason for repiping and is labor-intensive to remove. Polybutylene pipe (gray plastic, installed 1978-1995) has a higher failure rate and repiping demand for it is common. Old copper that has developed pinholes from acidic water is also a common repipe trigger. Lead pipe removal in pre-1930 homes may require additional testing and disposal protocols.

Running new pipe from a first-floor supply to second-floor bathrooms requires fishing pipe through finished wall cavities or accessing through attic or crawl space above. This work is more labor-intensive and invasive than a single-story repipe. Two-story homes typically cost 30-50% more per square foot to repipe than single-story homes of equal size.

“What pipe material do you recommend for my home, and why?”

Why this matters: Different plumbers have genuine preferences. Ask them to explain the pros and cons for your specific home, climate, and water quality. This reveals whether they are recommending what is best for you or what is easiest for them.

“How will you route the new pipes? Will you need to cut into walls, or can you access from the attic or crawl space?”

Why this matters: Access strategy determines how much drywall patching will be needed. A skilled plumber minimizes wall cuts. Ask them to walk you through the routing plan before you sign.

“Does your bid include drywall patching, or do I need to hire that separately?”

Why this matters: Most plumbers do not include drywall work. Confirm what the bid covers so you can budget appropriately for restoration.

“Will you pressure-test the entire system before closing walls?”

Why this matters: Pressure testing reveals any failed connections before walls are closed. A plumber who skips this step is cutting a critical quality assurance corner.

“Are you replacing all shutoff valves at fixtures and the main shutoff?”

Why this matters: Old shutoff valves are often seized and will fail when turned. While the walls are open, replacing all shutoffs is cheap insurance and should be included or clearly excluded from the bid.