Radon Mitigation in Arvada
Arvada is split-level country — houses with two personalities that need a radon fix designed for both halves.
Radon Mitigation for Arvada Homes
Arvada's signature house is the split-level: a slab under one half, a crawlspace under the other, and a radon system that has to treat both. Martens Radon designs for exactly that — licensed RMT.0000225, free on-site assessment, written quote usually the same day, and just up the road from our Golden base. In Candelas and Leyden Rock, many newer homes already have a passive pipe roughed in, and most homes we mitigate end up below 2.0 pCi/L, well under the EPA action level of 4.0.
How Is a Split-Level Arvada Home Mitigated?
One system usually treats both halves — suction under the slab side, a sealed membrane over the crawl side, tied into the same fan. It's the standard fix throughout split-level pockets like Lake Arbor and Club Crest, and because membrane work is involved, pricing lands in the crawlspace band.
Arvada is just one stop on a much bigger map — all the areas we serve lists the rest, including the other Jeffco suburbs nearby. If you want more before picking up the phone, how a radon system works walks through the mechanics step by step, and the full cost guide breaks down pricing across every foundation type, not just the split-level combination Arvada is known for.
Which Arvada Neighborhoods Do We Serve?
Arvada mixes classic split-levels with newer construction in Candelas and Leyden Rock, and the right system often depends on which half of the house you're standing in.
Olde Town
Early-1900s originals where every foundation is its own puzzle.
Candelas
Newer builds, many with a capped rough-in waiting to be activated.
Leyden Rock
Twenty-teens stock where activation is the usual first check.
West Woods
Nineties two-stories, mostly full basements.
Five Parks
Family two-stories where discreet exterior routing matters.
Lake Arbor
Sixties and seventies split-levels — the classic combination job.
Ralston Valley
Ranches and splits with the occasional garden level.
Club Crest
Seventies splits where slab and crawl share one footprint.
What Radon Mitigation Costs in Arvada
A straightforward slab or basement is the standard retrofit case: $1,400–$1,800. The split-level combination — slab plus crawl — reaches into the crawlspace band at $1,900–$2,800+ when a sealed membrane goes in. A capped rough-in in Candelas or Leyden Rock usually needs only activation: $550–$850.
Passive System Activation
Homes built with a capped rough-in pipe
$550–$850
Standard Retrofit System
Most slab or basement homes
$1,400–$1,800
Crawlspace System
Sealed membrane + sub-membrane suction
$1,900–$2,800+
What Every Martens Radon Install Includes
Every quote covers the complete job: all materials, the new fan, and debris disposal. Every system ships with a U-tube manometer and a vacuum alarm, as Colorado regulations require, so you can see at a glance that it is pulling. Exterior runs are finished with color-matched downspout transitions — including custom 3D-printed parts where a standard fitting will not fit the house. Ivan stands behind his own workmanship for as long as Martens Radon is in business, and the fan carries its own manufacturer warranty. A follow-up radon test is available if needed or wanted.
Arvada Radon Questions
Our split-level has a crawlspace under half the house — how does that work?
One system handles both sides. We run sub-slab suction under the slab half and install a sealed membrane with sub-membrane suction under the crawlspace half, and both tie into the same fan. Because the crawlspace needs a membrane, the job falls into the crawlspace pricing band rather than the standard retrofit band.
Our Candelas home has a capped radon pipe in a utility closet. Is that a passive system?
Yes, that's a passive radon system — the rough-in pipe was installed during construction, waiting for a fan. Activating it means adding the fan, the electrical wiring, and a manometer so the system can be monitored. That whole process runs $550–$850, well below what a full retrofit costs, since the hardest part — running the pipe — is already done.
Is my Arvada home in Jefferson County or Adams County, and does it matter?
Nearly all of Arvada sits in Jefferson County, though a small sliver reaches into Adams County. For radon purposes it doesn't really matter which side you're on — risk doesn't follow county lines, it follows the ground under your specific house. The only way to know where you stand is to test that house, regardless of which county it's in.
Are Olde Town's older homes handled differently than the newer builds up north?
The physics is the same everywhere — soil gas behaves the same way no matter when the house was built. What changes is placement. Older Olde Town foundations get extra attention during the on-site assessment, since their construction is less predictable than a newer build's, and that assessment is where Ivan works out where the system actually needs to go.
Our upstairs and garden-level readings differ — which number matters?
The lowest lived-in level is the one that drives the decision, since that's the level with the most direct exposure to soil gas. A garden level used as a bedroom or living space counts, even if the upstairs number looks fine. Bring both readings to the on-site assessment, and Ivan can work out what they mean for your specific home.
Start With the Free Assessment
Ivan comes out, walks the home, and you get a written quote — usually the same day. No cost, no obligation.