Radon Testing & Mitigation River Heights

What we know about radon in River Heights

River Heights sits south of the Assiniboine River in southwest Winnipeg, its elm-lined streets holding some of the city's best-known character homes. North River Heights and Crescentwood date largely from the 1910s through 1940s, while South River Heights and Grant Park filled in with postwar bungalows.

The housing profile in River Heights

River Heights was annexed to Winnipeg in 1882 but built out mostly after the First World War, and the split still shows. North River Heights and Crescentwood, closest to the Assiniboine River, carry 1910s to 1940s two-storey and two-and-a-half-storey character homes with original foundations, most renovated repeatedly over the decades. South River Heights and Grant Park follow with 1950s and 60s bungalows on full-depth basements. The whole area rests on river-lot clay running back from the Assiniboine, so seasonal shrink and swell works on these foundations every year, and sump pits with weeping tile are common in the blocks nearest the river. Basements here are usually finished, often beautifully, which matters for radon because the finishing hides slab condition and because families genuinely live down there. Strong resale demand also makes River Heights one of Winnipeg's busiest neighbourhoods for pre-purchase radon conversations.

What we get called for most in River Heights

A handful of patterns cover most of what we see on River Heights service calls. They map directly to the housing stock, the water profile, and the cold-climate operating range.

1. Character-home foundations with a century of settling. A 1920s River Heights foundation has been shrinking, swelling, and settling in gumbo clay for a hundred years. That produces cracked walls, gaps at the floor-wall joint, and slabs that were often poured thinner than modern practice, sometimes in stages as the basement was upgraded. Each defect is a potential soil gas route, and most are hidden behind renovations. We treat these homes as individual cases, test first, and design the system around what is actually down there.
2. Radon conditions in purchase agreements. River Heights homes attract competing offers, and radon is showing up in more Manitoba purchase conditions. When a deadline is running we prioritize the callback and lay out the options honestly. A long-term test of 91 days or more is the gold standard, recognized shorter protocols exist for transactions, and a high result is a negotiating item rather than a dealbreaker, because typical Winnipeg mitigation pricing runs $2,400 to $3,800. Clear numbers keep both sides of the table calm.
3. Finished basements hiding slab condition. Finished basements are nearly universal here, from vintage rec rooms to full modern renovations with bedrooms and gyms. The nicer the finish, the less anyone has seen the slab in decades. Radon concentrates on that lowest lived-in level, so Health Canada recommends a long-term test of at least 91 days, ideally through fall and winter when the house is sealed. Testing does not disturb finishes at all, and mitigation can usually be routed to spare them.
4. Sump pits in the blocks near the Assiniboine. Streets closest to the river carry the water-table pattern typical of Winnipeg river frontage, weeping tile draining to a sump pit in the basement. Unsealed pits are a direct opening to the soil, and older character homes often have covers that predate any thought of soil gas. A gasketed sealed lid closes the gap, and where a mitigation system is needed, the sump often serves as the suction point for the whole design.

What we fix in River Heights

Beyond the patterns above, we handle the full radon service list for River Heights residents and businesses: testing, mitigation, real estate timelines, crawlspaces and sump pits, and post-mitigation verification.

• Radon Testing in River Heights. Professional radon measurement for Winnipeg homes, from short-term screening to the 91-day long-term tests Health Canada recommends.
• Radon Mitigation in River Heights. Sub-slab depressurization systems for Winnipeg homes, designed and installed following Health Canada mitigation protocols.
• Real Estate Radon Testing in River Heights. Deadline-driven radon measurement for Winnipeg home sales, with priority callbacks for conditional offers and tight possession dates.
• Commercial Radon Services in River Heights. Radon measurement and mitigation planning for Winnipeg offices, daycares, clinics, and multi-unit buildings.
• Crawlspace & Sump Radon Control in River Heights. Sealed sump lids, crawlspace membranes, and soil gas control for the most common radon entry points in Winnipeg homes.
• Post-Mitigation Radon Testing in River Heights. Follow-up radon measurement that proves your mitigation system is actually keeping levels below the Health Canada guideline.

Local factors worth knowing about in River Heights

The bigger drivers behind the patterns above are geographic and infrastructure-level. They shape what fails first and how often.

• River-lot clay off the Assiniboine shrinks and swells seasonally, working cracks into even well-built older foundations.
• Character homes from the 1910s to 1940s carry original foundations with generations of renovations layered on top.
• High resale turnover makes radon a frequent condition item in River Heights purchase agreements.
• Finished basements are the norm, so slab and joint condition is usually invisible until someone tests.

How fast can we get to River Heights?

Same-day callback for most inquiries, priority callback for real estate deadlines. Testing visits usually within 2 to 3 business days.

Pricing in River Heights

Same market ranges across all of Winnipeg. We do not charge more for one neighbourhood than another. Professional measurement typically runs $150 to $350 and a standard mitigation install runs $2,400 to $3,800, with the written quote confirmed before any work is booked.

Questions we hear from River Heights homeowners