Finish your Arlington Heights basement from the stairs down, with safe, well-lit steps, a dry foundation and every inspection passed.
Our basement finishes follow one rule: nothing gets covered until we know the space is dry. We check the walls and floor and fix any drainage or sump issue first, then frame on treated bottom plates with clearance around the mechanicals, insulate, and run electrical and any plumbing rough-in for a bath or wet bar. Bedrooms get the egress window code requires, and the finish covers drywall, ceilings, flooring, doors, trim and paint. Full design-and-build basements are handled by ONIT Restoration, a brand of our same company with a crew that does basements all day, and ONIT Solutions takes repairs to a finished basement, partial finishes and single trades like framing or drywall.
We work in Arlington Heights every week, coming up Route 53 and using Arlington Heights Road and Northwest Highway to get around town and past downtown. The stairs are the part of a basement finish people forget. Once the basement becomes living space, the stairway needs a solid handrail, enough headroom, and light switches at the top and bottom, and an open side needs a guard. If your stairs were built for a storage basement, we bring them up to what the inspector will look for.

We inspect the foundation and slab and run the sump, and water issues get fixed at the start.
Handrail, guard on any open side, headroom checked, and three-way switches at the top and bottom.
Pressure-treated lumber where walls meet the slab, with service space left around the mechanicals.
Outside walls insulated, plus outlets, lighting, and smoke and CO alarms wired where code requires them.
Rough-in for a bath or wet bar when you plan one, and an egress window for any bedroom.
Drywall, ceilings, flooring, doors, trim and paint, with the stairs finished to match the new space.
After a free visit, you get a written estimate that covers the basement and the stairway, phase by phase. We pull the permit and book each inspection as the work gets there. If an old wall or the stairs hide something, you see it, get a price in writing and decide before we go on. Once everything is done, we walk the basement and the stairs with you.
Call or text (815) 585-1750 for a free on-site estimate that covers the basement and the stairs down to it.
Call or text (815) 585-1750
Email matt@onitcc.com