Radon Mitigation in Aurora, CO

One City, Two Housing Markets

Aurora is by far the largest area we cover, and it is really two places joined at the middle. The western half, in toward Colfax and Havana, is 1950s to 1970s — ranches, tri-levels and a great many garden-level basements that sit only partly below grade. The eastern half, out past E-470 through Painted Prairie, Southshore and the Reunion side of the county line, is 2000s onward: deep full basements, tightly sealed envelopes, modern mechanical ventilation. Same city, same EPA zone, completely different jobs.

Garden Levels Get Skipped, and Should Not Be

The garden-level basement is the single most under-tested space in this part of the metro, and the reason is psychological rather than technical. It has windows. It gets daylight. It does not feel like a basement, so people place the monitor upstairs. But it is still in soil contact across most of its perimeter and under the whole of its floor, and it is almost always finished and occupied — which makes it precisely the lowest lived-in level the protocol asks for. Getting that placement wrong is the most common way an Aurora result comes out reassuringly and wrongly low.

Sand Creek Ground on the Older Side

Much of the older western half sits on alluvial material along the Sand Creek drainage rather than on the dense claystone that underlies central Denver. Coarser, better-sorted ground carries soil gas more readily toward a foundation — and, usefully, also lets a mitigation fan spread a pressure field much further from a single suction point. It is one of the few places where the geology that causes the problem also makes the fix easier.

Newer Builds Often Have Half a System Already

A large share of the post-2010 construction on the east side has a capped white pipe running from beneath the slab up through a chase into the attic, installed during framing and never activated. It works by convection only and frequently is not enough on its own. It is also the cheapest starting point in this trade: adding a fan and a gauge to pipe that already exists is a fraction of the cost of a retrofit. Before quoting anything out here we look in the attic and the mechanical room, because finding one changes the number substantially.

Across the County Lines

Aurora spans Arapahoe, Adams and a corner of Douglas, and we work all of it — the older neighbourhoods off Colfax, the Buckley area, Southlands, and the far eastern subdivisions. Given the distances involved, it is worth mentioning your cross streets when you call. Most jobs begin with a continuous-monitor test, and where there is a sale in progress, the deadline drives the schedule.

Aurora Radon FAQs