Different Name, Same Legendary Service

Remodeling and New Construction Plumbing in O'Fallon, MO

Plumbing for Remodels, Additions and New Homes

At On Time Experts Heating, Air & Plumbing, remodeling and new construction plumbing plans, installs and finishes the water, drain and gas lines for remodels, additions and new homes. We work with homeowners, builders and general contractors, with upfront pricing for each phase.

Technicians unloading a new system.

What Remodeling and New Construction Plumbing Services Do We Provide?

A new toilet in a remodel.

On Time Experts Heating, Air & Plumbing plans and installs water supply lines, drain and vent piping, and fixtures for remodels, additions and new homes. Plumbing for a remodel often means moving lines to fit a new layout. New construction plumbing means plumbing the whole structure in stages that fit around framing, drywall and finish work.

You need it any time a project moves, adds or replaces plumbing, like a bathroom remodel that shifts the shower, a new island sink, a basement bathroom or a new home. Most of these jobs need a permit with sign-offs at set stages, so the plumbing schedule has to line up with everyone else's.

What Is Included in Our Remodeling and New Construction Plumbing Services?

The work covers each phase:

  • Layout planning: Working out fixture locations and pipe routes with you or your general contractor.
  • Rough in plumbing: Drain and water supply lines, plus vent pipes that let air into the system so drains run properly, set before walls and floors close.
  • Top-out: Carrying lines up through the framing to fixture height and venting through the roof.
  • Relocations: Moving sinks, toilets, showers and tubs for a new layout.
  • Basement bathrooms: Including an ejector pump when fixtures sit below the sewer line.
  • Gas lines: Lines for ranges, fireplaces and water heaters.
  • Finish plumbing: Setting fixtures during the trim stage, then testing every line.

For smaller upgrades, see our bathroom plumbing and kitchen plumbing pages.

Permits are pulled where required, with approvals scheduled at each stage.

Why Is Professional Remodeling and New Construction Plumbing Important?

A technician waving to the camera and he's in an On Time Experts truck.

The plumbing has to be right before the walls close. Once drywall and tile go on, moving a drain means tearing them out again.

Keep the Rest of the Project on Schedule

A rough-in that's tested and signed off on time keeps the drywall and tile crews moving. Builders and general contractors get a plumbing schedule built around their framing and drywall dates.

Plan Basement Bathrooms Early

Around St. Louis, finishing a basement often includes a bathroom. If the new fixtures sit below the point where the sewer line leaves the house, waste can't drain by gravity, so the bathroom needs an ejector pump to lift it up to the main line. Planning for that early helps keep the budget honest.

Use Less Water in the New Bathroom

Bathroom remodel plumbing is also a chance to use less water. WaterSense labeled showerheads use no more than 2.0 gallons per minute, compared with 2.5 for a standard showerhead, and the EPA's WaterSense showerhead guide explains what the label means.

What Happens During a Remodeling and New Construction Plumbing Project?

Here's how a project usually runs.

  1. Review the plans. We review plans or walk the space with you.
  2. Price each phase. You get upfront pricing for each phase before work starts.
  3. Rough-in and test. We complete the rough-in, test the lines and schedule the required approval before walls close.
  4. Top out. On multi-story projects, we carry the lines and vents up through the framing.
  5. Set fixtures. After drywall, tile and cabinets, we set the fixtures and test everything.
  6. Final sign-off. We complete the final sign-off and clean up.

You'll always know which phase comes next.

Frequently asked questions

Yes, remodeling plumbing can add a basement bathroom below the sewer line, but it needs an ejector pump. When the main sewer line leaves the house above the basement floor, waste from a lower toilet, shower or sink can't drain by gravity.

An ejector pump collects it in a sealed basin and pumps it up to the main line. If the sewer line runs below the floor, the bathroom can usually drain by gravity, though the concrete floor may need to be opened to tie in.

Yes, remodeling plumbing can usually move a toilet or shower, though the cost depends on what's in the way. A new drain location needs enough slope back to the main drain and a vent connection, and toilets need a larger drain than most fixtures.

Joists may limit the route on a wood-framed floor, and on a basement slab the concrete has to be opened and patched.

New construction plumbing works best when the plumbing phases are planned around the rest of the build. That means reviewing plans early, completing rough-in and top-out while framing is open, and returning for finish work after drywall and cabinets.

Approvals are scheduled at each stage, each phase is priced upfront, and the contractor knows when a phase is ready for the next trade.

Rough-in is the stage of remodeling and new construction plumbing where drain, vent and water supply pipes go in while walls and floors are still open. Pipes are stubbed out, meaning left sticking out and capped, at each fixture location, then tested for leaks.

In most jurisdictions the rough-in needs a permit sign-off before the walls can close. Fixtures themselves go in later, during the finish or trim stage.

How Much Does Remodeling and New Construction Plumbing Cost?

Remodeling and new construction plumbing cost depends on the size of the project and how much existing plumbing moves.

Factors that can affect the cost include:

  • Project type and size: New construction or a remodel, and its size.
  • Fixture count: The number of fixtures being added or replaced.
  • Relocations: Moving drains versus keeping existing locations.
  • Basement work: Opening concrete for drains, or adding an ejector pump.
  • Fixtures: Your fixture choices, and who supplies them.
  • Access: Open framing or finished walls.

You'll get upfront pricing before any work begins.

Why Choose On Time Experts Heating, Air & Plumbing for Remodeling and New Construction Plumbing?

On Time Experts Heating, Air & Plumbing is a plumbing contractor that plans around your project, not the other way around.

Clear recommendations: We explain the route and the options before anything is cut.

A schedule you can build around: Each phase fits your framing and drywall dates.

Upfront pricing: You see the price for each phase before work starts.

Schedule Remodeling and New Construction Plumbing

Send us your plans or tell us about the remodel, and we'll price each phase upfront.

We work in O'Fallon and nearby, including St. Charles and Brentwood.

I’d like to receive SMS messages about my project

Messaging rates vary based on your project needs. You can opt out at any time by replying STOP. Reply HELP if you are experiencing issues. Message/data rates apply.

I’d like to receive SMS marketing messages from On Time Experts Heating, Air & Plumbing

Messaging rates vary based on your project needs. You can opt out at any time by replying STOP. Reply HELP if you are experiencing issues. Message/data rates apply.

By submitting this form, you authorize On Time Experts Heating, Air & Plumbing to reach out to you about your project. We will never share your personal information with third parties for marketing purposes. You can opt out at anytime. Consent is not a condition of purchase.

Terms & Conditions | Privacy Policy

Thank you! Your submission has been received!
Oops! Something went wrong while submitting the form.