Furnace and AC Replacement Cost Calculator
Price a furnace and AC replacement by home size, efficiency and ductwork, then check whether the system size you were quoted actually fits.
House Repiping Cost Calculator | Free Estimate 2026
Use this house repiping cost calculator to estimate a planning range before you contact a plumbing contractor. Enter your home size, pipe material, number of stories, foundation type, and fixture count. The tool estimates a standard interior domestic water-supply repipe.
ESTIMATED REPIPE COST
Home size
—
Material
—
Stories
—
Foundation
—
Fixtures
—
Base labor & permit
$800
Estimated range
$5,143 – $6,957
Planning estimate only — excludes the exterior water main, sewer/gas lines, and drywall repair. See full scope details below. Get an in-home inspection before budgeting firmly.
How it is calculated
How the House Repiping Cost Calculator Works
The house repiping cost calculator begins with a blended installed rate. This rate combines pipe material, fittings, and typical labor. It is not the price of bare pipe alone. The calculator then adjusts the estimate for the number of stories, foundation access, and fixtures beyond the first ten.
The result appears as a range rather than a single number because every home has a different plumbing layout. Pipe routes, wall access, local labor, permit requirements, and restoration work can change the final price substantially.
Subtotal = Home square footage × blended installed rate.
Adjusted subtotal = Subtotal × story multiplier × foundation multiplier.
Estimated total = Adjusted subtotal + fixture add-on + base labor and permit allowance.
Estimated range = Estimated total × 0.85 to Estimated total × 1.15.
The planning assumptions are PEX at $3.50 per square foot, CPVC at $3.00 per square foot, and copper at $5.60 per square foot. The story multiplier is 1.00 for one story. It is 1.10 for two stories and 1.20 for three or more stories. Crawlspace or basement access uses a 1.00 multiplier. Slab access uses a 1.25 multiplier. The first ten fixtures are included. Each additional fixture adds $120. The base labor and permit allowance is $800.
Example: Repipe Cost for a 1,500 Square Foot House
Consider a one-story, 1,500-square-foot home with PEX piping, crawlspace access, and eight to ten fixtures. That combination generally produces a mid-range planning estimate in this calculator. Use the result to prepare questions for a licensed plumber. Do not treat it as a fixed project budget before an in-home inspection.
Cost factors
How Much Does It Cost to Repipe a House?
The cost to repipe a house varies with home size, layout, pipe material, fixture count, access conditions, and local labor rates. Many whole-house interior water-supply projects fall in the mid-thousands. Prices can be lower or higher in a particular city. A published range is useful for planning, not a substitute for a written scope and inspection.
Square footage affects the length of the supply runs. Fixture count affects the number of connection points. Foundation type affects how easily the plumber can reach the existing lines. Labor is often the largest part of the invoice. That is why two similar homes can receive different repipe estimates in nearby markets.
Average Cost to Repipe a House
For planning purposes, many homes may fall between $4,500 and $11,000 for an interior domestic water-supply repipe. The actual cost depends on location, home size, pipe material, access, restoration, and the condition of the existing plumbing. Ask each contractor to explain the assumptions behind the estimate. Do not compare headline numbers alone.
What Affects a House Repiping Cost Estimate?
- Home size: larger homes generally need longer supply runs and more connection points.
- Fixture count: sinks, toilets, showers, tubs, appliances, water heaters, and hose bibs may each need a connection.
- Number of stories: multi-story homes may require additional vertical runs and more wall or ceiling access.
- Foundation access: crawlspaces and basements may be easier to work in than slabs, although conditions vary.
- Pipe material: PEX, CPVC, and copper have different material, labor, and installation requirements.
- Local labor and permit fees: contractor rates and permit costs vary widely by region.
- Restoration: drywall, paint, tile, flooring, and concrete work may be priced separately.
Material comparison
PEX vs. Copper vs. CPVC: Which Repiping Material Costs Less?
| Material | Relative cost | Planning notes |
|---|---|---|
| PEX | Usually lowest | Flexible, requires fewer fittings in many layouts, and may reduce wall access. |
| CPVC | Usually low to middle | Rigid routing can make access and layout more important. |
| Copper | Usually highest | Material, tools, labor, and finished-space access can increase the total. |
PEX is often the lower-cost option for a whole-house repipe. It is flexible and may require less cutting in some layouts. Copper commonly costs more because its material, fittings, tools, and installation methods are different. CPVC may sit between PEX and copper. The price depends on the region and the availability of qualified installers.
Price is not the only consideration. Before selecting a material, confirm the local plumbing code and product availability. Also discuss water conditions, warranty terms, expected service life, connection method, and access requirements with a licensed plumbing professional.
PEX Repipe Cost, Copper Repipe Cost, and CPVC Repipe Cost
The calculator uses separate blended installed rates for PEX, CPVC, and copper. These rates are planning assumptions that combine material and ordinary installation labor. They should not be interpreted as a guaranteed price per square foot in every market.
Access and project scope
Does a Slab Foundation Increase House Repiping Cost?
A slab foundation can raise the price when supply lines run below concrete. Cutting, removing, and restoring concrete adds labor and repair work. Some contractors avoid the concrete by rerouting new lines through an attic or interior wall cavities. The chosen route changes the labor mix and restoration scope.
The slab adjustment in this house repiping cost calculator is a simplified allowance. It is not a fixed 25% surcharge for every slab home. Ask the plumber which route will be used and why it is appropriate for the property.
What the Repiping Cost Calculator Includes and Excludes
This tool estimates an interior domestic water-supply repipe. The planning scope may include standard fixture connections, typical fittings, ordinary routing, and a general permit allowance.
The estimate does not normally include:
- The exterior water service line from the street to the house.
- Sewer or drain piping.
- Gas piping, irrigation, or fire-sprinkler systems.
- Water-heater replacement.
- Major concrete work.
- Extensive drywall repair, painting, tile, or flooring restoration.
Galvanized steel, polybutylene, severely corroded pipes, existing water damage, blocked wall cavities, vaulted ceilings, tile, cabinets, and difficult access can increase the final bill. Review the scope with a licensed plumber before relying on the estimate.
Planning the project
How Long Does House Repiping Take?
Many standard homes can be repiped in one to three days. Slab foundations, multi-story layouts, high fixture counts, difficult access, and extensive restoration can extend the schedule. Water service may be shut off in stages, and some crews use temporary connections when the layout allows it.
Ask the contractor how long each part of the home will be without water. Confirm whether permits and inspections are included. Also ask how pressure testing, patching, and cleanup will be handled.
Questions to Ask Before Hiring a Repipe Specialist
Request a detailed written scope before approving a whole-house replumbing project. Ask which fixtures are included and which pipe specification will be installed. Also ask whether the design uses a home-run manifold or a trunk-and-branch layout.
Confirm whether the quoted price covers permits, inspections, pressure testing, shutoff valves, and water-heater connections. It should also explain drywall access, patching, painting, cleanup, disposal, and warranty service. A clear scope makes quotes comparable and reduces surprise add-on charges.
For a project of this size, collect two or three written in-home assessments from licensed contractors. Compare the scope, warranty, material specification, access plan, and restoration allowance. The lowest headline number is not always the lowest total cost.
For general site information, review the calculator disclaimer. If you have a question about this tool or want to suggest another calculator, use the Contact Us page.
Common questions
House Repiping Cost Calculator FAQs
What is a typical house repiping cost?
Many homes may fall between $4,500 and $11,000 for an interior water-supply repipe. The actual figure depends on location, home size, pipe material, fixture count, access, permits, and restoration. Only a local inspection can produce a reliable quote.
Is PEX cheaper than copper for repiping?
PEX is often less expensive than copper for both material and installation. The difference depends on the layout, local labor rates, pipe specification, and the amount of wall or ceiling access required.
Does a slab foundation always cost more?
No. A slab can make access harder, but the planned route determines much of the price. An attic or overhead route may cost less than removing large areas of concrete. Ask the contractor to explain the access plan.
Does this repipe cost calculator include drywall repair?
No. The tool covers interior water-supply piping and typical fixture connections. Drywall, tile, paint, flooring, and major concrete restoration are excluded or priced separately unless the contractor includes them in writing.
Should all old pipes be replaced at once?
Not always. A partial repipe can address the most damaged or inaccessible runs first. The trade-off is that older sections remain in service and may require future repairs. Ask a licensed plumber to compare a partial and complete repipe over the long term.
How accurate is a house repiping cost calculator?
This is a planning tool, not a bid. The final quote can differ after a plumber inspects the property. The inspection may cover the pipe route, wall access, foundation, existing damage, permits, and restoration requirements.
Data and methodology
Data and Methodology for This Repipe Cost Estimator
The calculator uses planning assumptions for blended installed rates, story multipliers, foundation access, fixture allowances, and a base labor and permit allowance. These assumptions were benchmarked against public contractor and home-service cost references. Sources include Angi’s house repiping cost guide, Repipe Solutions, and CPI Service. We then checked the assumptions against practical repipe scenarios.
These sources reflect regional contractor pricing rather than a single national survey. Treat the result as a national planning guide, not a local quote. Material prices, labor rates, permit fees, and restoration costs can change. Review the assumptions when market conditions shift.
This house repiping cost calculator is for planning only. Obtain an in-home inspection and at least two written quotes before committing to a repiping project.
Reviewed August 2026. Cost figures are planning assumptions and are not a guarantee of local contractor pricing.
Keep exploring
Related Calculators
Stump Grinding Cost Calculator | Cost Per Diameter by Stump Size
Estimate stump grinding cost per diameter inch by stump size, species, grind depth and access, then check a contractor quote.
Land Clearing Cost Calculator | Free Cost Per Acre Estimate 2026
Estimate a land clearing planning range from acreage, vegetation, terrain, access, debris and stumps, then compare a contractor quote.
Hardie Siding Cost Calculator | Free & Accurate 2026
Estimate siding coverage from walls, gables and openings, then compare a Hardie siding project scope using local rates you enter.
Roof Square Footage Calculator | Free & Accurate 2026
Reviewed: August 2026. This page explains a planning method for measuring roof surface area; it is not a substitute for a final professional takeoff or a roof inspection. Use this roof square footage calculator to turn your roof measurements into an estimated sloped area, roofing squares and material-planning quantities, whether you start with one straightforward … Read more
What should we build next?
Every new calculator starts from a real question someone searched for. Tell us yours.
Suggest a tool →