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Cost to Repipe a House in Illinois: $5,300–$9,500

In Illinois, a PEX repipe of a house with 2 full baths and 11 fixtures costs an estimated $5,300–$9,500, and copper runs $10,500–$15,300. The estimate is based on national published prices scaled by plumber wages in Illinois, plus one local plumbing permit fee. A fixture is anything a supply line feeds: a toilet, sink, tub, shower, dishwasher, washing machine or hose bib.1,2,3,4,5,6,7,8,9,10

This site found fewer than two plumbing companies in Illinois that publish a repipe price, so the Illinois figures are national prices scaled by the state's mean plumber wage.

Key figures for Illinois

ItemFigure
PEX repipe estimate (midpoint $7,400, a house with 2 full baths and 11 fixtures) $5,300–$9,5001,2,3,4,5,6,7,8,9,10
Copper repipe estimate (midpoint $12,900, same house) $10,500–$15,3001,2,3,4,6,7,10
PEX, per fixture (national prices scaled by state wage) $470–$8501,2,3,4,5,6,7,8,9
Plumbing permit example (Village of Winnetka) $16810
Mean plumber wage (US mean $34.70/hr, May 2025) $44.91/hr1
Median year built (housing units, ACS 2024 1-year) 197111

Estimate a repipe in Illinois

A fixture is anything a supply line feeds: each sink, toilet, tub and shower, plus the dishwasher, the washing machine and each hose bib.

Estimate: $5,300–$9,500, midpoint $7,400, for 11 fixtures.1,10

Low uses the low end of each published price range; high uses the high end.
Line itemLowHigh
Repipe, installed (pipe, fittings and labor)national prices scaled by Illinois plumber wages$5,170$9,3501
Plumbing permitpermit fees published in Illinois$168$16810
Total (rounded)$5,300$9,500

Supply lines only. Wall and ceiling patching is not a line here, and some published prices leave it out, so ask whether a quote includes it.

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Repipe cost in Illinois by number of bathrooms

Illinois repipe estimate by number of bathrooms, permit included1,2,3,4,5,6,7,8,9,10
House Fixtures PEX Copper
1 bath 8 $3,900–$7,000 $7,700–$11,200
1.5 baths 10 $4,900–$8,700 $9,600–$14,000
2 baths 11 $5,300–$9,500 $10,500–$15,300
2.5 baths 13 $6,300–$11,200 $12,400–$18,100
3 baths 14 $6,700–$12,100 $13,300–$19,500
4 baths 17 $8,200–$14,600 $16,100–$23,600

Each full bath adds three fixtures (toilet, sink, and tub or shower) and each half bath adds two. Each row is the Illinois estimate for that house size, permit included.

Sources1,2,3,4,5,6,7,8,9,10

Where the money goes on an Illinois repipe

PEX repipe, a house with 2 full baths and 11 fixtures, Illinois
Line itemLowHighBasis
Repipe, installed (pipe, fittings and labor)$5,170$9,350national prices scaled by state plumber wages
Plumbing permit$168$168published in this state
Total, rounded to $100$5,300$9,500

Sources1,2,3,4,5,6,7,8,9,10

How Illinois compares

The mean hourly wage for plumbers in Illinois is $44.91, 29% above the US mean of $34.70. Because Illinois uses national prices scaled by that wage, its estimate moves with it. The table compares the PEX estimate for the same house with neighboring states this site covers.

PEX repipe estimate, a house with 2 full baths and 11 fixtures
AreaEstimateMidpointPlumber wage
Illinois$5,300–$9,500$7,400$44.91
Indiana$4,200–$7,700$6,000$36.37
Michigan$4,300–$7,900$6,100$37.14
Missouri$4,200–$7,800$6,000$36.06
United States$4,000–$7,500$5,800$34.70

Sources1,2,3,4,5,6,7,8,9,10,12,13,14,15,16

Permits and licensing in Illinois

The Illinois Department of Public Health licenses plumbers, plumbing contractors and apprentices under the Illinois Plumbing License Law (225 ILCS 320). A plumber license requires an apprenticeship and a state exam. You can check a plumber's license on the state license search. Plumbing permits come from the city or village. Winnetka charges a base fee that covers up to five fixtures, plus a fee for each fixture after that. Ask your building department how it prices a whole-house repipe.

  • Village of Winnetka: Plumbing: $90 base fee covers up to five fixtures, plus $13 for each additional fixture. For a house with 2 full baths and 11 fixtures, that comes to $168.

Sources17,10

Plumbing code in Illinois

IDPH regulates plumbing by maintaining a minimum code of standards, the Illinois Plumbing Code, which is the state's own code rather than the IPC or UPC. Your city or county can add local amendments, so the building department that issues the permit has the final word.

Sources17

Age of Illinois's housing

Half of the housing units in Illinois were built before 1971, by the Census Bureau's ACS 2024 1-year count. 37% were built before 1960, when galvanized supply pipe was common. 19% were built from 1980 to 1999, the two Census decades that overlap the years polybutylene pipe was made. Age alone does not tell you what pipe a house has; a plumber or inspector can.

Sources11,18,19

Common questions

Do you need a permit to repipe a house in Illinois?

Plumbing permits come from the city or village. Winnetka charges a base fee that covers up to five fixtures, plus a fee for each fixture after that. Ask your building department how it prices a whole-house repipe. Under the fee schedule from the Village of Winnetka, the fee for a house with 2 full baths and 11 fixtures comes to $168.

Who licenses plumbers in Illinois?

The Illinois Department of Public Health licenses plumbers, plumbing contractors and apprentices under the Illinois Plumbing License Law (225 ILCS 320). Its license lookup shows whether a plumber's license is current.

How much more does copper cost than PEX in Illinois?

For a house with 2 full baths and 11 fixtures, PEX is estimated at $5,300–$9,500 and copper at $10,500–$15,300, a difference of about $5,500 at the midpoint. Per fixture, the Illinois figures are $470–$850 for PEX and $940–$1,380 for copper.

How was the Illinois estimate made?

The national per-fixture prices plumbers publish were multiplied by 1.294, the ratio of the Illinois mean plumber wage to the US mean. That price times the fixture count, plus the permit fee from the Village of Winnetka, gives the range. The methodology explains each step.

Related pages

For every state side by side and the national figures, see what repiping a house costs.

Sources

  1. Occupational Employment and Wages, May 2025: 47-2152 Plumbers, Pipefitters, and Steamfitters (state estimates), U.S. Bureau of Labor Statistics. Accessed November 10, 2026. Mean hourly wage for each state and for the US, from the BLS public data API (series OEUS{state FIPS code}00000000000047215203 for a state, OEUN000000000000047215203 for the US).
  2. How Much Does It Cost to Repipe My Home?, The Repipe Company. Accessed November 10, 2026.
  3. How Much Does It Cost to Replumb a 1,500 Square Foot House in 2026?, Repipe Solutions Inc. Accessed November 10, 2026.
  4. PEX vs Copper Piping: Which Is Better?, Kimco Plumbing & Air. Accessed November 10, 2026.
  5. PEX vs Copper, Repipe1. Accessed November 10, 2026.
  6. Copper Repipe vs PEX: Which Is Better for Your Home?, All Pro Repipes Inc. Accessed November 10, 2026.
  7. Whole-Home Repiping Pricing, Home Therapist Cooling, Heating, and Plumbing. Accessed November 10, 2026.
  8. Cost to Repipe a House in Florida: 2026 Pricing and Homeowner Guide, Alberto Pro Plumbing. Accessed November 10, 2026.
  9. Average Cost to Repipe a House with PEX, Action Craft Experts. Accessed November 10, 2026.
  10. Mechanical, Electric, Plumbing Permit Fee Worksheet (1.12.2024), Village of Winnetka. Accessed November 10, 2026. Worksheet dated 1.12.2024.
  11. American Community Survey 2024 1-year, tables B25034 (Year Structure Built) and B25035 (Median Year Structure Built), U.S. Census Bureau. Accessed November 10, 2026. State rows of the summary files acsdt1y2024-b25034.dat and acsdt1y2024-b25035.dat.
  12. Evansville Municipal Code Chapter 15.05 General Provisions (incl. 15.05.470 Building and construction fee schedule), City of Evansville (Code Publishing Company). Accessed November 10, 2026. Section 15.05.470 was last amended by Ord. G-2017-29, passed 10-12-17. The city's own PDF of the section (https://www.evansvillegov.org/egov/documents/1588368133_31874.pdf, created April 2020) shows the same plumbing fees.
  13. Plumbing Permit Application and fee chart, City of Grand Rapids. Accessed November 10, 2026.
  14. Plumbing Permit Fees, City of St. Louis Building Division. Accessed November 10, 2026. Fees established by City Ordinance 71644; page shows no revision date.
  15. Construction Permit Fees, Effective October 1, 2026 (PG_012_INF Rev 7.2026), City of Philadelphia Department of Licenses and Inspections. Accessed November 10, 2026.
  16. 2026 Combined Development Related Fee Schedule, City of Columbus Building and Zoning Services. Accessed November 10, 2026.
  17. Plumbing, Illinois Department of Public Health. Accessed November 10, 2026.
  18. Galvanized Iron Pipes, East Bay Municipal Utility District. Accessed November 10, 2026.
  19. Polybutylene Pipes, InterNACHI (International Association of Certified Home Inspectors). Accessed November 10, 2026. Source for the 1978 to mid-1995 production years and the 'up to 10 million homes' figure.

How these figures are built: methodology. Updated November 2026.