Advantage Home Inspections
“He is extremely knowledgeable, personable, and offers a full range of services!”
Best Mold Inspection & Testing near Longmont, CO
3 of these companies are based in Longmont; the others serve Longmont from towns including Boulder (13 mi), Firestone (7 mi) and Mead (7 mi).
4 open 24/7 · 12 open weekends · 14 rated 4.5+ · 1 shows a license
Data verified October 29, 2026
Beagle Home Inspections
“He even returned to the property an additional day to observe the HVAC system one more time and make sure things were running properly.”
Elliott Home Inspections
“Elliot out for a home inspection on our new house and he did an excellent job, very thorough, and extremely knowledgeable about all the different systems and construction techniques.”
Navigations Home Inspection
“I would highly recommend Joel for all your home inspections, rest at ease he will find the items that need addressed.”
First Point Construction
“What really sets them apart is their deep knowledge of Colorado residential construction and the unique considerations that come with renovating homes in this region.”
Care Restoration
“Throughout the project, they communicated clearly, answered our questions, and made what could have been a very stressful situation much more manageable”
Listed for homeowners in and around Longmont, CO, these 15 companies test for mold 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: Longmont, CO
The 15 companies on this page are rated from 4.3 to 5.0 across 537 reviews; 3 have 50 or more reviews and 14 are rated 4.5 or higher. The topics that come up most in reviews of the companies on this page are "communication", "price" and "knowledge". 4 are open around the clock; 12 are open on Saturdays and 7 on Sundays. The services the companies on this page list most often on their websites are asbestos abatement (2), mold (2), mold inspections (2), new construction inspection (2) and pre-purchase inspection (2). 1 shows a license on its website; 3 list staff certifications (InterNACHI and IICRC) and 2 have a BBB rating of A or A+. 4 have ten or more years of experience, the longest 21 years. 4 offer emergency call-outs; 4 give free estimates; 1 is family- or locally-owned and 1 lists coupons or special offers. We have a website on file for 14 of the companies on this page; 11 publish a contact page; 9 list a public email and 5 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.
Boulder Home Inspector
“Brett from Boulder Home Inspection was thorough and timely with the inspection and report.”
Total Home Inspection Services LLC
“I've had Total Home Inspection Services LLC do radon tests at several of my rental houses.”
Look Property Inspection
“Brad is my favorite property inspector -- his attention to detail is super impressive and he gives a ton of information about how to keep your home in top shape.”
A-Pro Home Inspection Boulder
“Tim K did a great job - punctual, thorough, and answered all my questions”
High Range Home Inspections LLC
“Joe did a pre purchase inspection on a very old cabin for us.”
Morris Vogel Restoration
“Their communication is top notch and they documented everything for us because we couldn't live there during the work.”
Certified Property Inspections
“He did two pre-purchase home inspections for me and caught a big problem with the roof on the first, saving me from buying a bad situation (was not expecting roof issues due to it not being old).”
Allstar Inspection Services
“The inspection report delivered at the end was very detailed, available as both a nice interactive summary through an online platform, and as a smartly formatted PDF.”
Phil's Inspection Service LTD
Why these companies made our list
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