# 1st defense radon testing and mitigation LLC

Business profile: public business information with links to supporting state records. Data as of October 16, 2026.

- Legal business name: 1st defense radon testing and mitigation LLC
- Entity type: LLC
- Original incorporation date: September 7, 2016
- Time in business: 10 years and 1 month
- Jurisdiction count: 1

## All known addresses

- 9120 Hillside Trl S, Cottage Grove, MN 55016 (listed in Minnesota)

## Registered states

- [Minnesota](https://index.baselayer.com/mn/c7da5528c8860143): Domestic registration

Source: public state registration records. Missing values are not a negative finding.

Cite as: Baselayer Business Index (https://index.baselayer.com/business/c7da5528c8860143)