Plumbing Cost in O Fallon, MO in 2026
Most Plumbing projects in O Fallon, MO cost between $250 and $5,000. The typical price is $1,200.
O Fallon prices track the national average closely. Costs here are close enough to the national picture that the adjustment barely moves the number.
What drives the price
- Accessible fixture swap versus opening walls or slab
- Pipe material — copper, PEX or cast iron replacement
- Emergency versus scheduled work
- Permit and inspection requirements
Usually included
- Licensed plumber labour
- Pipe, fittings and standard fixtures
Usually extra
- Drywall and finish repair
- Fixtures you supply
- Municipal tap or sewer connection fees
Plumbers in O Fallon, MO
Businesses listed on Google near O Fallon, MO. We are not affiliated with them and do not vet them — always confirm licensing and insurance before hiring.
Precision Plumbing Solutions
4.7(1,449 reviews)
812 Midpoint Dr, O'Fallon, MO 63366
Arch Plumbing
4.9(947 reviews)
11104 Veterans Memorial Pkwy, Lake St Louis, MO 63367
Hosack Plumbing, Heating & Cooling
4.9(746 reviews)
110 W Pitman St, O'Fallon, MO 63366
AAA Home Services
4.6(861 reviews)
827 W Terra Ln, O'Fallon, MO 63366
Hosack Plumbing, Heating & Cooling
5.0(182 reviews)
4011 N St Peters Pkwy #101, St Peters, MO 63304
Pierson Plumbing Sewer & Drain L.L.C
4.8(172 reviews)
500 Boone's Lick Rd Ste C Upper, St Charles, MO 63301