Commercial Radon Testing & Mitigation in Greater Cincinnati

Greater Cincinnati sits in EPA Radon Zone 1, the highest radon-potential category. The same soil gas that pushes into basements pushes into lower floors, basements, and slab-on-grade areas of offices, schools, and apartment buildings. If people work, learn, or live on a ground-contact level, radon belongs on your checklist.

If you manage or own a commercial or multifamily building, this page covers which buildings tend to test, how commercial testing differs from a home test, and how our referral works for larger properties.

Building types that most often test

Any building with occupied lower-level space is a candidate. In our area, these are the ones that come up most:

• Schools and daycares — children spend long hours in ground-floor and basement classrooms, so these get tested first and most often.
• Offices with occupied lower levels — walk-out basements, garden levels, and slab-on-grade suites where staff sit all day.
• Apartments and condos — first-floor and basement units, plus shared laundry, storage, and mechanical rooms.
• Medical and senior facilities — clinics, care homes, and assisted-living buildings where occupants are present around the clock.
• Buildings being bought or refinanced — lenders and buyers increasingly ask for a radon result before closing.

How commercial testing differs

A home test is often a single device in the basement. A commercial building is bigger and used differently, so the testing plan scales up.

Expect more measurement points spread across ground-contact rooms, longer or continuous monitoring rather than a quick short-term kit, and a recognized protocol behind the plan — for example, the ANSI/AARST standards written for multifamily and school buildings. The licensed contractor sets the specifics based on the building's size, use, and layout.

New to how radon measurement works at all? Our radon testing overview covers the basics before you scale up to a building.

Commercial mitigation

When a building tests high, the fix uses the same idea as a house — pull soil gas from under the slab and vent it above the roof — but sized for the structure.

That can mean larger or multiple sub-slab depressurization systems, higher-capacity fans, and routing planned around a bigger footprint. The licensed contractor also coordinates the install around occupancy so classes, tenants, or staff aren't disrupted more than necessary. The mechanics are the same ones we walk through on our radon mitigation system page.

Why use a licensed commercial contractor

Commercial radon work carries more scope and more liability than a single-family install, and owners and lenders usually want documentation to match.

A licensed contractor handles the measurement protocol, the mitigation design, and the paperwork that owners, boards, and lenders rely on. We refer only licensed radon professionals for this reason — the building record needs to hold up. All work is performed by our licensed contractor partners, never by us.

What it costs

Commercial radon pricing is quote-based. Cost depends on the building's size, foundation, and how many measurement points or mitigation systems the layout requires, so there's no flat rate to publish.

A licensed contractor will assess the building and price the scope directly. For a sense of how residential mitigation is priced, our radon mitigation cost guide explains the home-side factors — commercial estimates follow the same logic at a larger scale.

How the referral works for commercial buildings

The process mirrors our home referral, sized for a bigger property.