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Cost to Repipe a House in Missouri: $4,200–$7,800

In Missouri, a PEX repipe of a house with 2 full baths and 11 fixtures costs an estimated $4,200–$7,800, and copper runs $8,500–$12,400. The estimate is based on national published prices scaled by plumber wages in Missouri, 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 Missouri that publish a repipe price, so the Missouri figures are national prices scaled by the state's mean plumber wage.

Key figures for Missouri

ItemFigure
PEX repipe estimate (midpoint $6,000, a house with 2 full baths and 11 fixtures) $4,200–$7,8001,2,3,4,5,6,7,8,9,10
Copper repipe estimate (midpoint $10,500, same house) $8,500–$12,4001,2,3,4,6,7,10
PEX, per fixture (national prices scaled by state wage) $370–$6901,2,3,4,5,6,7,8,9
Plumbing permit example (City of St. Louis Building Division - Plumbing Section) $140–$19010
Mean plumber wage (US mean $34.70/hr, May 2025) $36.06/hr1
Median year built (housing units, ACS 2024 1-year) 197811

Estimate a repipe in Missouri

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: $4,200–$7,800, midpoint $6,000, 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 Missouri plumber wages$4,070$7,5901
Plumbing permitpermit fees published in Missouri$140$19010
Total (rounded)$4,200$7,800

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 Missouri by number of bathrooms

Missouri repipe estimate by number of bathrooms, permit included1,2,3,4,5,6,7,8,9,10
House Fixtures PEX Copper
1 bath 8 $3,100–$5,700 $6,200–$9,100
1.5 baths 10 $3,800–$7,100 $7,700–$11,300
2 baths 11 $4,200–$7,800 $8,500–$12,400
2.5 baths 13 $5,000–$9,200 $10,000–$14,600
3 baths 14 $5,300–$9,900 $10,800–$15,700
4 baths 17 $6,400–$11,900 $13,100–$19,100

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

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

Where the money goes on a Missouri repipe

PEX repipe, a house with 2 full baths and 11 fixtures, Missouri
Line itemLowHighBasis
Repipe, installed (pipe, fittings and labor)$4,070$7,590national prices scaled by state plumber wages
Plumbing permit$140$190published in this state
Total, rounded to $100$4,200$7,800

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

How Missouri compares

The mean hourly wage for plumbers in Missouri is $36.06, 4% above the US mean of $34.70. Because Missouri uses national prices scaled by that wage, its estimate moves with it. The table compares the PEX estimate for the same house with the neighboring state this site covers.

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

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

Permits and licensing in Missouri

Missouri has no state plumbing board. State law requires master and journeyman plumbers in cities of 15,000 or more people to hold a certificate, and those cities issue them. In St. Louis, the city's Building Division licenses plumbing contractors. Plumbing permits come from the city or county. St. Louis lists replacing water supply lines among the work that needs a permit, and only city-licensed plumbing contractors can get one. Ask your building department how it prices a whole-house repipe.

  • City of St. Louis Building Division - Plumbing Section: Application fee $30; fixtures, each $10; rough inspection, each $25; finish inspection, each $25. For a house with 2 full baths and 11 fixtures, that comes to $140–$190.

Sources15,16,10

Plumbing code in Missouri

Missouri has no statewide plumbing code. The City of St. Louis adopted the 2021 Uniform Plumbing Code in 2023. Your city or county can add local amendments, so the building department that issues the permit has the final word.

Sources17

Age of Missouri's housing

Half of the housing units in Missouri were built before 1978, by the Census Bureau's ACS 2024 1-year count. 27% were built before 1960, when galvanized supply pipe was common. 24% 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 Missouri?

Plumbing permits come from the city or county. St. Louis lists replacing water supply lines among the work that needs a permit, and only city-licensed plumbing contractors can get one. Ask your building department how it prices a whole-house repipe. Under the fee schedule from the City of St. Louis Building Division - Plumbing Section, the fee for a house with 2 full baths and 11 fixtures comes to $140–$190.

Who licenses plumbers in Missouri?

Missouri has no state plumbing board. State law requires master and journeyman plumbers in cities of 15,000 or more people to hold a certificate, and those cities issue them.

How much more does copper cost than PEX in Missouri?

For a house with 2 full baths and 11 fixtures, PEX is estimated at $4,200–$7,800 and copper at $8,500–$12,400, a difference of about $4,500 at the midpoint. Per fixture, the Missouri figures are $370–$690 for PEX and $760–$1,110 for copper.

How was the Missouri estimate made?

The national per-fixture prices plumbers publish were multiplied by 1.039, the ratio of the Missouri mean plumber wage to the US mean. That price times the fixture count, plus the permit fee from the City of St. Louis Building Division - Plumbing Section, 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. Plumbing Permit Fees, City of St. Louis Building Division. Accessed November 10, 2026. Fees established by City Ordinance 71644; page shows no revision date.
  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. Mechanical, Electric, Plumbing Permit Fee Worksheet (1.12.2024), Village of Winnetka. Accessed November 10, 2026. Worksheet dated 1.12.2024.
  13. 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.
  14. 2026 Combined Development Related Fee Schedule, City of Columbus Building and Zoning Services. Accessed November 10, 2026.
  15. RSMo 341.010 Plumbers must have certificates, Missouri Revisor of Statutes. Accessed November 10, 2026.
  16. Apply for a Plumbing Permit, City of St. Louis Building Division. Accessed November 10, 2026.
  17. Building Codes Adopted by the City, City of St. Louis Building Division. 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.