Repiping Your Home: Costs, Materials, and What to Expect

Updated March 2026 · By the PlumbCalcs Team

Repiping a home is one of the most significant plumbing investments a homeowner can make, but it is also one of the most impactful. Old, corroded, or failing pipes cause low water pressure, discolored water, leaks, and potential water damage. A whole-house repipe replaces all supply piping with modern materials, restoring full water pressure and eliminating the risk of pipe failure for decades. Understanding the costs, material options, and process helps you make an informed decision and budget accurately for this major home improvement.

Signs Your Home Needs Repiping

Several telltale signs indicate that your home plumbing has reached the end of its useful life. Rusty or discolored water, particularly when first turning on a tap, signals internal pipe corrosion. Low water pressure throughout the house, rather than at a single fixture, suggests widespread buildup or corrosion narrowing the pipe interiors. Frequent pinhole leaks in different locations mean the entire system is deteriorating, not just one spot.

Age is the strongest predictor of pipe failure. Galvanized steel pipes, common in homes built before 1970, have a lifespan of 40 to 60 years and are almost certainly due for replacement. Polybutylene pipes, used from the late 1970s through the mid-1990s, are prone to sudden catastrophic failure and should be replaced proactively. Copper pipes can last 50 to 70 years but develop pinhole leaks from aggressive water chemistry.

• Discolored or rusty water from multiple fixtures
• Low water pressure throughout the entire house
• Multiple pinhole leaks in different locations
• Galvanized steel pipes over 40 years old
• Polybutylene (gray plastic) pipes of any age
• Visible corrosion on exposed pipes in basement or crawl space

Material Options: Copper vs PEX vs CPVC

The three primary repiping materials each have distinct advantages. Copper has a proven track record spanning over 70 years, excellent durability, and universal code acceptance. However, it is the most expensive option and requires skilled soldering. PEX (cross-linked polyethylene) is the most popular modern choice, offering lower material and labor costs, flexibility for easier installation, and resistance to corrosion and scale buildup.

CPVC is a rigid plastic pipe that falls between copper and PEX in cost. It resists corrosion and is easy to work with using solvent cement joints. However, CPVC can become brittle over time, especially in hot attic spaces, and has restrictions in some cold climates. For most residential repipes, PEX offers the best balance of cost, performance, and installation speed.

• Copper: $8 to $12 per linear foot installed, 50 to 70 year lifespan, proven reliability
• PEX: $4 to $8 per linear foot installed, 40 to 50 year expected lifespan, fastest installation
• CPVC: $5 to $9 per linear foot installed, 30 to 50 year lifespan, chemical resistant
• PEX uses 60 percent fewer fittings than copper, reducing potential leak points
• Copper has the highest resale value perception among homebuyers

Cost Breakdown by Home Size

The total cost of a whole-house repipe depends on the home size, number of fixtures, pipe material chosen, number of stories, accessibility, and local labor rates. A typical 1,500-square-foot single-story home with 2 bathrooms and a kitchen can be repiped in PEX for $4,000 to $8,000 or in copper for $8,000 to $15,000.

Multi-story homes, slab foundations, and finished interiors that require drywall opening and patching increase costs significantly. A two-story home with 3 bathrooms typically costs $6,000 to $12,000 in PEX or $12,000 to $20,000 in copper. Slab foundations where pipes run under the concrete can add $2,000 to $5,000 for rerouting pipes through the attic or walls instead of jackhammering the slab.

• Small home (under 1,500 sqft, 1 bath): $3,000 to $6,000 PEX, $6,000 to $10,000 copper
• Average home (1,500 to 2,500 sqft, 2 bath): $4,000 to $8,000 PEX, $8,000 to $15,000 copper
• Large home (2,500+ sqft, 3+ bath): $6,000 to $12,000 PEX, $12,000 to $20,000 copper
• Slab foundation rerouting: add $2,000 to $5,000
• Drywall repair and painting: add $1,000 to $3,000
• Permit fees: $200 to $500 in most jurisdictions

The Repiping Process: What to Expect

A typical residential repipe takes 2 to 5 days depending on the home size and complexity. Day one usually involves protecting work areas, cutting access holes in walls and ceilings, and removing old pipes. Days two and three focus on installing new piping, and the final day covers testing, inspection, and initial patching.

During the repipe, you will have no water service for portions of each day, usually 6 to 8 hours while the plumber works on active connections. Plan for this by filling containers with water the night before, arranging alternate shower facilities if possible, and stocking disposable plates and utensils to minimize kitchen use. The plumber should restore water service each evening.

• Day 1: protection, access holes, old pipe removal
• Days 2 to 3: new pipe installation, manifold setup (if applicable)
• Day 3 to 4: pressure testing, connection to fixtures, inspection
• Day 4 to 5: drywall patching, cleanup (painting is typically homeowner responsibility)
• Water service interrupted during working hours only
• City or county inspection required before closing walls

Insurance, Permits, and ROI

Repiping typically requires a plumbing permit from your local building department, and the work must pass inspection before walls are closed. Working without a permit can void your homeowner insurance coverage for water damage and create problems when selling the home. Permit costs range from $200 to $500 in most areas.

The return on investment for repiping is substantial but indirect. A repipe typically recoups 40 to 60 percent of its cost in increased home value and can make the difference between selling and not selling an older home. Insurance companies may also reduce premiums or continue coverage that would otherwise be denied for homes with polybutylene or severely deteriorated piping.

• Permits are required in virtually all jurisdictions for repiping
• Insurance may deny water damage claims if unpermitted work fails
• Home value increase: 40 to 60 percent of repipe cost typically recovered
• Insurance premium reduction possible after replacing high-risk pipe materials
• Some insurance companies refuse to insure homes with polybutylene pipes
• Properly permitted repipe work provides documentation for future buyers