Commercial Radon Mitigation in Atlanta
System Design, Installation & Verification for Commercial Buildings
When a commercial building tests at or above 4.0 pCi/L, mitigation is the next step. We design and install systems sized to the actual slab, then verify with post-mitigation testing and documentation.
Buildings That Need Commercial Mitigation
Any building where a radon test came back at or above the EPA action level of 4.0 pCi/L is a mitigation candidate. In metro Atlanta, most of which sits in EPA Zone 1 or Zone 2, that includes a wide range of commercial property types. If your building has not been tested yet, start with commercial radon testing in Atlanta first. Mitigation design depends on knowing which zones read high and by how much.
Office Buildings
Ground-floor and below-grade office space is where radon concentrates. Mitigation systems for offices are routed to keep risers out of tenant sightlines and fans away from occupied windows.
Schools & Daycares
Classrooms and childcare spaces on slab or over crawl space are common mitigation candidates after a high test. Work is scheduled around the academic or care calendar.
Multifamily Properties
Apartment and condo buildings usually show elevated readings in ground-level and terrace-level units. Systems are designed so one installation can serve multiple affected units where the slab allows.
Healthcare & Senior Living
Clinics, medical office buildings, and senior living facilities have long occupancy hours, which raises cumulative exposure. Riser routing is planned around medical gas, vacuum, and IT pathways.
Warehouses & Industrial
Large slabs often need multiple suction points and higher-capacity fans. Design accounts for dock doors, make-up air, and process ventilation that residential methods never deal with.
Retail & Hospitality
Inline retail, restaurants, and hotel lower levels are typically shorter mitigation runs. Guest-facing and customer-facing areas get concealed risers and quiet fan placement.
How Commercial Systems Differ From Residential
The physics is the same: create negative pressure under the building so soil gas is pulled out before it enters. Everything around that physics scales up in a commercial building.
Commercial vs. Residential Mitigation
| Feature | Commercial Mitigation | Residential Mitigation |
|---|---|---|
| Suction Points | Multiple, set by diagnostics | Usually one or two |
| Fan Sizing | Higher-capacity, sometimes multiple fans | Single standard fan |
| HVAC Interaction | Designed around building mechanical systems | Minimal interaction |
| Scheduling | Phased around occupancy and operations | Typically one day |
| Verification | Zone-by-zone post-mitigation testing | Single retest location |
| Documentation | Closeout package for managers, boards, lenders | System label and retest result |
The Commercial Mitigation Process
Five stages, in order. No stage is skipped, because each one protects the next: the assessment protects the design, the design protects the install, and verification testing protects you.
1. Assessment
Every commercial mitigation project starts on site. We review the test data that triggered the project, walk the slab, check crawl space and mechanical areas, and run diagnostic measurements to see how air moves under the building. Suction-point count is the biggest cost variable, and it can only be determined with eyes on the structure.
2. System Design
The design specifies suction-point locations, fan sizing, riser routing, electrical needs, and how the system interacts with the building's HVAC. You receive a written proposal with a fixed scope before any work begins.
3. Installation
Suction points are cored through the slab, piping is routed to the fan location, and the fan discharges above the roofline or away from air intakes. Where possible, noisy steps like slab coring are phased around business hours or scheduled for off-hours. Some coordination with your facility contact is always part of the plan.
4. Verification Testing
After the system runs long enough to stabilize, post-mitigation testing confirms radon has been reduced. If any zone still reads high, the system is adjusted before the project is closed out. The job is not done until the numbers say it is.
5. Documentation
You receive a closeout package: system design, photos, device locations, pre- and post-mitigation readings, and a narrative summary. It is written to be handed to a property manager, board, lender, or attorney without follow-up questions.
Because suction-point count and slab construction drive most of the cost, pricing follows the assessment, not a phone estimate. The written proposal states the scope, the system design, and a fixed figure for that scope. For background on what moves mitigation pricing generally, see our radon mitigation cost guide.
Documentation That Holds Up
Georgia does not mandate commercial radon mitigation, so in practice the paperwork matters as much as the pipe. Once a tenant, parent, or employee has raised radon in writing, the building owner is on notice, and a documented mitigation project with verified results is the defensible response. Our closeout package is built for exactly that use.
Radon is one of several indoor environmental issues that show up in commercial due diligence. If a property inspection has also flagged mold, our sister company Erase Mold handles commercial mold remediation across metro Atlanta, and the two projects can be coordinated. For the full picture of our commercial radon services statewide, see the commercial radon services hub.
Commercial Radon Mitigation FAQs
How much does commercial radon mitigation cost in Atlanta?
There is no flat price for commercial mitigation. Cost is driven by slab area, slab construction, the number of suction points needed, riser routing distance, electrical runs, and whether the building is occupied during work. A small office can be similar in scope to a large home, while a warehouse with multiple suction points is a different category of project. You receive a written proposal after an on-site assessment, not a number over the phone.
Will installation disrupt our business operations?
Some disruption is unavoidable, but most of it can be managed. Slab coring is the loudest step and is usually brief at each suction point. Work can often be phased around business hours, scheduled for evenings or weekends, or sequenced zone by zone so most of the building stays in normal use. The schedule is worked out with your facility contact before installation starts.
How do you decide how many suction points a building needs?
Diagnostic testing during the assessment. We drill small test holes and measure how suction communicates under the slab. A slab with good sub-slab communication may need only one or two points. Large slabs, slabs poured in sections, or buildings with footings that divide the sub-slab area typically need more. The proposal states the count and the reasoning.
How is a commercial radon system different from a residential one?
Scale and coordination. Commercial systems often use multiple suction points, higher-capacity fans, and longer pipe runs. Crawl space areas get sealed sub-membrane systems sized to the footprint. The design also has to account for commercial HVAC, which moves far more air than a home system and can pull radon into a building if pressure relationships are wrong.
How do we know the system actually worked?
Post-mitigation verification testing. After installation, radon levels are measured again in the affected zones under normal building operation. Results are compared against the pre-mitigation data and included in your closeout documentation. The EPA also recommends retesting every two years to confirm ongoing performance.
What maintenance does a commercial radon system need?
Very little day to day. The fan runs continuously and each system includes a monitor that shows whether it is operating. Fans eventually wear out and need replacement, and the EPA recommends retesting every two years, after major renovations, or when building use changes. We include monitoring guidance in the closeout package.
Fix the Radon Problem, Then Prove It
Tell us about your building and the test results you have. We will schedule an assessment and put a written proposal in front of you.
Related Topics
Commercial Radon Testing
Testing protocols for Atlanta commercial buildings
Commercial Radon Services
Statewide hub for testing, mitigation, and documentation
Mitigation Cost Guide
What drives radon mitigation pricing
Mitigation Systems
System types and how they work
Atlanta Radon Map
EPA zone data for commercial site assessment
Radon Safety Resources
Expert insights and guides to keep you informed
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