# Martens Radon

> Licensed radon mitigation for the Denver metro area and Colorado foothills. Free on-site assessments, transparent pricing, and quiet, reliable systems (full installs from $1,400; passive-system activation from $550). Colorado license RMT.0000225.

## Key facts
- **What is Martens Radon?** A licensed, owner-operated radon mitigation company serving the Denver metro area and the Colorado foothills. Colorado radon mitigation license RMT.0000225; work is performed personally by owner Ivan Martens.
- **Which areas does Martens Radon serve?** Denver metro, Golden, Evergreen, Conifer, Lakewood, Arvada, Westminster, Aurora, Littleton, Parker, Longmont, and the Jefferson County foothills.
- **How much does radon mitigation cost?** Passive-system activation runs $550–$850. A standard active sub-slab retrofit runs $1,400–$1,800. Crawlspace encapsulation systems run $1,900–$2,800+ depending on the size of the crawlspace and access.
- **How effective are the systems?** Most homes are brought below 2.0 pCi/L, well under the EPA action level of 4.0 pCi/L. Every system includes a U-tube manometer that shows it is holding vacuum, and a follow-up radon test is available if you want the new level verified.
- **What does the service include?** A free on-site assessment with a written quote (usually the same day), the complete installed system (all materials and debris disposal, the new fan, a U-tube manometer, and a vacuum alarm per Colorado regulations), and lifetime workmanship coverage backed by owner Ivan Martens. Follow-up radon testing is available on request.
- **How do I reach Martens Radon?** Phone 720-778-3623 or email ivan@martensradon.com, Monday through Friday, 8am to 6pm. The free on-site assessment comes with a written quote, usually the same day.

## Key pages
- [/mitigation-cost](https://martensradon.com/mitigation-cost): Radon mitigation pricing and the factors that affect what a system costs.
- [/service-area](https://martensradon.com/service-area): Areas served: Denver metro, Golden, Evergreen, Conifer, Lakewood, and the Jefferson County foothills.
- [/faq](https://martensradon.com/faq): Answers to common questions about radon, testing, and mitigation systems.
- [/photo-gallery](https://martensradon.com/photo-gallery): Examples of installed radon mitigation systems.
- [/about-martens-radon](https://martensradon.com/about-martens-radon): About Ivan Martens, licensed Colorado radon mitigator (RMT.0000225).
- [/contact](https://martensradon.com/contact): Request a free on-site radon assessment.
- [/blog](https://martensradon.com/blog): In-depth guides on radon mitigation systems, costs, and custom 3D-printed parts.
- [/privacy-policy](https://martensradon.com/privacy-policy): How Martens Radon handles your information.
- [/sms-terms](https://martensradon.com/sms-terms): Terms for the business text-messaging program.
- [/service-areas/denver](https://martensradon.com/service-areas/denver): Radon mitigation service page for Denver — neighborhoods, pricing bands, FAQs.
- [/service-areas/arvada](https://martensradon.com/service-areas/arvada): Radon mitigation service page for Arvada — split-level expertise, activations.
- [/service-areas/westminster](https://martensradon.com/service-areas/westminster): Radon mitigation service page for Westminster — both county sides, tri-levels.
- [/service-areas/lakewood](https://martensradon.com/service-areas/lakewood): Radon mitigation service page for Lakewood — brick ranches, Green Mountain.
- [/service-areas/golden](https://martensradon.com/service-areas/golden): Radon mitigation service page for Golden — home base, foothills crawlspaces.
- [/service-areas/aurora](https://martensradon.com/service-areas/aurora): Radon mitigation service page for Aurora — three county sides, ranches to rough-ins.
- [/service-areas/parker](https://martensradon.com/service-areas/parker): Radon mitigation service page for Parker — walk-outs, finished basements, Douglas County.

## Radon mitigation guides
- [3d Printing The Right Parts](https://martensradon.com/blog/3d-printing-the-right-parts/)
- [How Radon Mitigation Systems Work Complete Technical Guide](https://martensradon.com/blog/how-radon-mitigation-systems-work-complete-technical-guide/)
- [Radon Mitigation Cost Guide For Denver Colorado Homeowners](https://martensradon.com/blog/radon-mitigation-cost-guide-for-denver-colorado-homeowners/)

## Contact
- Phone: 720-778-3623
- Email: ivan@martensradon.com