Ottawa air quality testing
Ottawa air quality testing means an inspector samples your home and an accredited third-party lab reads the samples. You get a written answer on mold and asbestos. Until then, a basement that’s dried out after a storm still hasn’t told you what’s behind the wall.
Accredited lab analysis
IICRC certified, IAQA member
Book your Ottawa inspection
Tell us what you’re seeing. We’ll reply within one business day with a flat-rate quote.
Ottawa’s older homes and its water: the Glebe, the Ottawa River at Britannia in the 2019 flood, and the Rideau River.
Photos via Wikimedia Commons: Glebe Avenue by Cantons-de-l’Est (CC BY-SA 4.0); Britannia by Ross Dunn (CC BY-SA 2.0); Rideau River by MB-one (CC BY-SA 4.0).
Ottawa Air Quality and Mold Testing at a Glance
| Phone | 1-866-528-2897 |
|---|---|
| Hours | Customer service 24/7. Inspections Monday to Friday, 8 AM to 5 PM |
| Serving | All of Ottawa, including Kanata, Nepean, Barrhaven, Orleans, Stittsville and Manotick, plus Gatineau |
| Response | Reply within one business day with a flat-rate quote. Same-week appointments |
| Air quality and mold testing | CAD 550 plus HST (1 air sample + outdoor baseline), CAD 260 per extra sample |
| Asbestos testing | CAD 430 plus HST for the first material, CAD 250 per extra |
| Results | Written inspection report within 1 business day of the visit. Mold lab results in 2 to 5 business days, asbestos in 3 to 4 |
Full breakdowns: air quality testing cost and asbestos testing cost.
We test Ottawa homes and workplaces for mold and asbestos, the two things behind most indoor air quality worries. An accredited lab analyzes every sample, and a mould air test is CAD 550 plus HST, with the outdoor baseline and written report included. You’ll get a flat-rate quote before anyone books a visit.
You’re probably here with a smell, a stain or a basement that took on water. We’ve run more than 15,000 inspections across Ontario and Quebec since 2005, and the plan doesn’t change: look first, sample only what needs sampling, let the lab give the answer.
Last updated: 4 November 2026
Indoor air quality testing in Ottawa starts with where the water has been
Mold needs moisture, and in Ottawa that often comes down to one storm on one street. The Canada Day storm of July 1, 2026 dropped 167 mm on Britannia in five hours and 144 mm on Nepean, while Trim Road in the east end got 15 mm. The City called it a 1 in 200 year event in the hardest-hit areas.
Rain in Britannia in five hours, July 1, 2026
Requests to the City’s 311 line about the flooding and extreme weather
Rain at Trim Road in the same storm
That wasn’t the first time. The August 10, 2023 storm damaged homes from Barrhaven to Orleans. The Ottawa River flooded in 2017, then worse in 2019, which hit places like Britannia, Constance Bay and Cumberland. (The river rises with the melt every spring, but it doesn’t flood every year.)
A basement that’s been pumped out and repainted can still have damp insulation behind the drywall. So if your street took water, the date of that storm is the first thing we’ll ask about.
But air quality testing in Ottawa can’t answer everything, so we look first
Health Canada says that in most situations it does not recommend testing the air for mould. An air test can’t predict health effects, and it often says little about what caused the damage. Canada has no health-based exposure limit for indoor mould either, so no lab report can say your air is “safe” in that sense.
We agree with most of that. If you can see the growth and you know where the water came from, you may not need an air sample at all, and a visual inspection at CAD 95 plus HST can settle it. Health Canada also names the case where air testing helps: concerns that stay unexplained after an inspection, especially after flooding or leaks that may have reached wall cavities. Plenty of west-end Ottawa basements fit that description after July 2026.
Myth I’m nowhere near the river, so my basement’s fine.
Fact The July 2026 flooding came from rain, not the river. Basements filled in neighbourhoods like Qualicum and Graham Park, well back from the shore.
Myth An air test will tell me whether the mold is making my family sick.
Fact It can’t. It shows which spores are present and how they compare with outdoors. For health questions, talk to your doctor and bring the report with you.
Myth It dried out, so the problem’s over.
Fact Dry paint says nothing about the back of the drywall. That’s the part an inspector checks with a moisture meter, before anyone pays for a lab.
A basement can feel dry and still be damp behind the drywall. That’s why I check with a moisture meter before anyone repaints or closes up a wall.
Natasa Maric
Senior Indoor Environmental Inspector
So every Ottawa air quality test ends with lab results in writing
Once sampling makes sense, an accredited third-party lab reads the samples, so the person who took them isn’t the one grading them.
Mold testing
Air samples in the rooms that worry you, one sample outside as a baseline, and surface samples where we can see growth. The lab counts the spores and names the types. Mold inspection and testing in Ottawa has the full detail.
Asbestos testing
Small samples of the materials you plan to disturb, such as ceiling texture, floor tile, plaster or pipe wrap, sealed on site and analyzed under a microscope. Asbestos testing in Ottawa gives you a yes or no for each material.
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1
Before the visit
We ask what happened and when
Symptoms, building age, water events and renovations. That decides what to sample, and you get a flat-rate quote.
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2
Day of the visit
The inspector looks first, then samples
A moisture survey of the rooms, attic and basement, with an infrared camera if needed. Then air, surface or material samples, each logged by location and time.
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3
Within 1 business day
You get the inspection report
What the inspector saw, with moisture readings, photos and where each sample was taken.
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4
2 to 5 business days for mold, 3 to 4 for asbestos
The lab’s results come back in writing
Measured results and a plain-language next step your insurer, contractor or buyer can use. Rush analysis is available for an added fee.
Even a clean mold result won’t cover asbestos, and older Ottawa homes can have both
Water damage is often what gets a wall opened, and that’s when the age of the house matters. Early brick homes in the Glebe and Centretown can have old plaster. Post-war bungalows in Nepean, Bells Corners and Vanier can have popcorn ceilings and vinyl floor tile. Health Canada says asbestos was mainly used in buildings and homes before 1990, and you can’t tell by looking, so a sample comes before the demolition.
Ontario Regulation 278/05 makes that a legal duty for many building owners. Owner-occupied homes are exempt, but your contractor’s workers are still covered, so they may ask for a result anyway. See asbestos testing in Ottawa before you book the renovation.
Air quality testing in Ottawa costs the same as everywhere we work
You’re paying by sample and by material, not by the size of the house. These are our Ottawa prices, in Canadian dollars, plus HST.
| Test type | Price | What’s included |
|---|---|---|
| Mould air test one room + outdoor baseline |
$550 | Visual and moisture inspection, 1 indoor air sample, free outdoor baseline sample, lab analysis, written report |
| Each extra room one more air sample |
$260 | Another room sampled in the same visit: two rooms come to $810, three rooms to $1,070 |
| Asbestos bulk sample per suspect material |
$430 first, $250 each extra | Safe sampling of each material, PLM lab analysis, written report |
| Vermiculite attic insulation loose-fill attic check |
$550 | Attic sampling in full protective gear, lab analysis, written report |
| Asbestos air test on request |
$450 first, $330 each extra | Air drawn through a filter cassette on site, fibre count at the lab, mostly used as clearance after removal work |
| Formaldehyde test lab badge |
$350 with a visit, $595 on its own | Badge hangs 24 to 48 hours, then goes to the lab by mail; results in about 2 weeks; $295 per extra room |
Need a firm quote? Request a callback or call 1-866-528-2897 with a quick description of what you’re concerned about and where in Ottawa the property is.
We test indoor air quality across Ottawa, from Kanata to Orleans
Looking for air quality testing near me in Ottawa? We serve every neighbourhood and the suburbs around it, including dedicated pages for air quality testing in Orleans and south to Kemptville. Buying a home here? See air quality testing for real estate.
Centretown, ByWard Market, Sandy Hill, Old Ottawa South, The Glebe, Rockcliffe Park, New Edinburgh, Vanier
Kanata, Stittsville, Bells Corners, Bayshore, Westboro, Hintonburg, Britannia, Centrepointe
Nepean, Barrhaven, Manotick, Riverside South, Greenboro, Hunt Club, Alta Vista
Orleans, Gloucester, Beacon Hill, Cumberland, Blackburn Hamlet, Overbrook, Carlington
Gatineau, Aylmer, Embrun, Rockland, Russell, Greely. For a Gatineau-side booking, see Gatineau air quality testing.
What Ottawa homeowners say
Real feedback from recent Ottawa-area inspections
"Spring melt soaked the basement in Orleans and we kept smelling something musty weeks later. The inspector arrived on time, sampled three rooms plus an outdoor control, and we had Stachybotrys and Aspergillus confirmed in 48 hours. Clear, defensible report: exactly what our insurance adjuster wanted."
"We were renovating a 1960s bungalow in Nepean and our contractor flagged the popcorn ceiling and pipe wrap before demo. AQT sampled both the same week, results back in three days. One came back positive for chrysotile. They walked us through abatement options without trying to upsell."
Frequently asked questions about Ottawa air quality testing
It can. Health Canada says exposure to mould can irritate your eyes, nose and throat and can make asthma worse. We test buildings, we don’t diagnose people, so bring any symptoms to your doctor. If they ease when you leave a building, that’s worth mentioning, along with what indoor air quality covers.
Sometimes. A test is worth it when concerns stay unexplained after an inspection, such as a flood or leak that may have reached a wall, or a smell with no source. A small visible patch with a known cause usually isn’t worth testing. Clean it, fix the water, and save the $550. A $95 visual inspection is often enough to decide.
Yes, and a consumer kit can flag a problem cheaply. Most mold kits are open dishes that catch what falls on them, with no outdoor comparison and no chain of custody. That’s fine for curiosity. For a real-estate deal, an insurance claim or a remediation decision, you’ll want accredited lab analysis. Our guide to home test kits covers the options.
Our mould air test is CAD 550: the visual and moisture inspection, one indoor air sample, a free outdoor baseline sample, lab analysis and the written report. Each extra room sampled is CAD 260, so two rooms come to CAD 810 and three to CAD 1,070. Asbestos testing is CAD 430 for the first material and CAD 250 for each extra one. All prices are plus HST.
Test if you can smell it but can’t find it, or if water reached a wall or stayed wet for days, as it did in many west-end basements in July 2026. If you can see a small patch and know the cause, you probably don’t need a lab. Our Ottawa mold inspection and testing page has the detail.
Call or send the form and we’ll reply within one business day with a flat-rate quote. Same-week appointments are the norm, and inspections run Monday to Friday, 8 AM to 5 PM. After the visit, the written inspection report takes 1 business day, and lab results take 2 to 5 business days for mold or 3 to 4 for asbestos.
Specialized testing in Ottawa
Focused asbestos and mold testing for the Ottawa area.
Our certifications
You can know what’s behind the wall instead of guessing.
An inspector looks first, an accredited lab reads the samples, and you get the answer in writing. Serving Ottawa, Kanata, Nepean, Barrhaven, Orleans and Gatineau.
Phone open 24/7 · Inspections Monday to Friday, 8 AM to 5 PM · Response within 1 business day