Best Mold Inspection & Testing near Nepean, ON
3 of these companies are based in Nepean; the others serve Nepean from Ottawa (12 km) and Gatineau, QC (19 km).
3 open 24/7 · 12 open weekends · 14 rated 4.5+ · 3 show a licence
Data verified November 8, 2026
RWH Inspection Services
All Over Home Inspection Inc
Enviropure Home
Artech Home Inspection
Barrhaven Home Inspectors Inc.
Listed for homeowners in and around Nepean, ON, these 15 companies test for mould and indoor air problems. Listings show what each one states about sampling, lab work and the environmental tests it offers, plus ratings and quotes from public reviews.

Area overview: Nepean, ON
14 of the 15 companies on this page have a rating, from 4.6 to 5.0 across 1,235 reviews; 6 have 50 or more reviews. The topics that come up most in reviews of the companies on this page are "professional", "knowledge" and "price". 3 are open around the clock; 12 are open on Saturdays and 10 on Sundays. 3 show a licence on their websites and 4 list staff certifications (ASHI, IICRC and InterNACHI). Domain records put 7 websites of the companies on this page at ten or more years old; the oldest dates from 1997. 3 offer emergency call-outs; 1 offers financing or payment plans and 1 gives free estimates. We have a website on file for 14 of the companies on this page; 12 publish a contact page; 12 list a public email and 3 take bookings online. We count these figures across the companies on this page; distances are straight-line, and hours and prices change, so confirm the details with the company before you book.
Is one opinion enough on a damp problem?
Not when the first visit ends with a large removal quote attached. You have 15 companies on this page, so getting a second diagnosis is straightforward. Ask each one what it thinks the water source is. Two independent answers that match is the strongest signal you will get.



