Whole House Repipe Cost in St. Louis 2026
Whole House Repipe in St. Louis costs between $3,720 and $13,950 in 2026, with the average around $7,440. St. Louis pricing runs 7% below the US national average. Replacement of all supply water lines throughout the home with new PEX or copper piping, new shutoff valves, and fixture connections. Includes wall access, patching, and pressure testing.
What whole house repipe includes in St. Louis
Replacement of all supply water lines throughout the home with new PEX or copper piping, new shutoff valves, and fixture connections. Includes wall access, patching, and pressure testing.
Typical time on site: 2 to 4 days. Local labor rate: $27/hour for an experienced plumbing pro.
What changes the price of whole house repipe in St. Louis
- PEX versus copper
- Number of bathrooms
- Home size and stories
- Wall access and drywall repair
- Slab or crawlspace routing
A whole house repipe quote priced off statewide averages will be off by 10 to 20 percent for St. Louis, because the metro has its own labor pool, material delivery distances, and permit timelines.
St. Louis climate and demand for plumbing
Continental climate with hot humid summers, freeze-thaw winters, tornado and severe-storm exposure, and proximity to the New Madrid seismic zone.
St. Louis permits for whole house repipe
Building department: City of St. Louis Building Division (Department of Public Safety). https://www.stlouis-mo.gov/government/departments/public-safety/building/index.cfm
Typical permit cost: $120 - $2,200 residential depending on valuation. Inspection time: 7-15 business days for residential plan review. St. Louis rule: St. Louis is an independent city, legally separate from surrounding St. Louis County, so its Building Division permits and licenses apply only within city limits and differ from county jurisdictions next door. The city requires licensed master trades and contractor business licenses, and its position near the New Madrid seismic zone means Missouri code carries seismic detailing provisions.
Missouri sales tax and licensing for Plumbing
Missouri sales tax: 4.225% + local (~8.4% combined avg). Real property labor exempt. Contractor pays sales tax on materials at purchase.
State license: No statewide GC license; municipal (KC, St. Louis, Springfield) require local license, no statewide license, local registration required.
Get accurate Whole House Repipe quotes in St. Louis with KaamCam
KaamCam helps St. Louis plumbing pros send branded estimates by text, take deposits online, and schedule jobs from one app. The estimate templates auto-fill Missouri sales tax and St. Louis permit fee lines. $12 per user per month. Start a 7-day free trial.