Westmont, DuPage County

Basement Finishing in Westmont

Add a basement bath or a wet bar in Westmont with drains that slope, vents that work and a pump that keeps up. Westmont is on our regular route.

Basement finishing in Westmont, with the plumbing planned right

Our basement jobs follow one rule: nothing gets covered until it is dry and inspected. We check the walls and slab, run the sump, and fix drainage first. Then we frame on treated bottom plates, keep clearances around the mechanicals, insulate, and rough in electrical along with plumbing for any bath or wet bar. Drywall, ceilings, flooring, doors, trim and paint follow the inspections, and permits are on us. If you want a full design-and-build basement, that runs under our ONIT Restoration brand, same company and a crew on basements all day, while repairs, partial finishes and single trades like framing or drywall stay with ONIT Solutions.

We reach Westmont along Ogden Avenue, Route 83, Cass Avenue and 55th Street, near the Metra station, in DuPage County. Plumbing is where a basement bath or bar gets decided. If the fixtures sit below the sewer line, waste has to be pumped up, which means an ejector pit in the slab and a vent run up through the house. If they sit above it, the drain still needs the right slope back to the stack, and that usually means cutting a trench in the floor. We map it at the estimate so you know what the plumbing involves before you settle on where the bar goes.

Basement Finishing by ONIT Solutions

What a Westmont basement finish includes

Water and sump first

We test walls and slab, run the sump and correct drainage before any wall goes up.

Ejector pit or gravity drain

We determine whether the fixtures can drain by gravity or need an ejector pit, then build it that way.

Venting to code

Bath and bar drains get vents tied into the house system so they drain without gurgling.

Framing and insulation

Walls sit on pressure-treated bottom plates, the mechanicals keep their clearance, and walls and rim joists get insulated.

Bath fan and electrical

We run circuits, GFCI outlets at the bar and bath, lighting, and a fan vented outside.

Finishes

Drywall, ceiling, tile or flooring, doors, trim and paint complete the space.

How we build a Westmont basement

The estimate is free and comes in writing, with the plumbing route marked out so you know where the floor gets cut. If we break concrete and find something unexpected, like an old pipe in poor shape, we price the fix in writing and wait for your approval. We pull the permit through the village, schedule the plumbing and framing inspections, and book the crew around them. At the walkthrough we run water at every fixture and fix anything you are not happy with.

  • Drainage handled before framing
  • Plumbing route mapped at the estimate
  • Ejector pit planned when needed
  • Bath fan vented outside
  • Hidden work priced before we do it
  • Water run at every fixture at the end
Full basement design and build runs under our ONIT Restoration brand. Same company, a crew that does basements all day.
FAQ

Basement Finishing in Westmont: questions

Do you work near Westmont?
Yes. We finish basements in Downers Grove, Clarendon Hills, Darien and Oak Brook.
Does Westmont require a permit for a basement bath?
Yes. Plumbing, electrical and new walls all need one, and the plumbing gets its own inspection before the floor and walls close. We pull it through the village and handle the inspections.
Can we add a wet bar later?
Yes. If you think you may want one, we can stub the drain and supply lines in during the finish and cap them, so adding the bar later does not mean opening finished walls.
How long does a basement with a bath take?
Plumbing adds rough-in work and an inspection before drywall. The full timeline depends on scope, and we put it on a written schedule at the start.
How do I get started?
Call or text (815) 585-1750. Tell us where you would like the bath or bar, and we will check the plumbing route on the visit.

More questions and answers ›

Also in Westmont

Other work we do in Westmont

Nearby

Basement Finishing in nearby towns

Free estimate

Plan your Westmont basement bath or bar

Book a free estimate with a call or text to (815) 585-1750. We will find the drain route before we talk finishes.

Call or text (815) 585-1750
Email matt@onitcc.com

Or call or text (815) 585-1750. We reply during business hours.

Call (815) 585-1750Get an Estimate