Hire an Independent Mold Inspector in London, Ontario

Our mold inspector comes to your London home, usually within a day or two, for $300 to $600 with accredited-lab analysis included. A mold inspection answers one question honestly: what is actually here, and where is it coming from? We walk the home, take moisture readings, sample where the evidence points, send it to an accredited lab, and hand you a plain report. We do not remove anything, so nothing in that report is written to sell you a removal job. If you already know the growth has to go, start with mould removal in London, Ontario, which shows how to scope the job before anyone quotes it.

Independence is the point the guidance supports: Health Canada puts finding and fixing the moisture source ahead of the cosmetic cleanup, and the EPA sets the same order, which a report from someone who cannot be paid to remediate is best placed to keep honest.

If you have a musty smell you can't place, a dark patch that won't come clean, a basement that flooded, or a disagreement that needs settling, an inspection is the calm first step that replaces guessing with a document.

What an inspection actually covers

An inspection is not someone glancing at a wall and quoting a price. It is a methodical look for moisture, because mold is a moisture problem before it is a mold problem.

• A full visual walk-through of the areas of concern and the usual London trouble spots: basements, bathrooms, around windows, behind and under sinks, the attic hatch, and anywhere there has been a past leak.
• Moisture and humidity readings with a meter, because damp drywall reads long before mold is visible, and a high-humidity basement tells you where the next problem is coming from.
• A sampling plan matched to what we find: air samples to measure what is in the air you breathe, surface samples (tape lift or swab) to identify a visible patch, and a comparison outdoor air sample so the indoor numbers mean something.
• Photographs and notes tied to each sample, so the report is a record you can hand to anyone.

Air sampling versus surface sampling, plainly

People ask which one they need. The honest answer is that they measure different things, and a good inspection uses whichever the situation calls for.

Air sampling captures the spores floating in the air and counts them against an outdoor baseline. It is how you answer "is the air in this room a problem?" and it catches mold you cannot see, including growth behind walls that is releasing spores into the room.

Surface sampling (a tape lift or swab of a visible patch) identifies what a specific stain actually is. It answers "is this dark spot on the bathroom wall mold, and if so, what kind?"

A visible patch usually gets a surface sample to name it, plus an air sample to find out whether it is affecting the air. One without the other tells half the story.

What you get back

The deliverable is the point, so here is exactly what it is: a plain-language report, usually within a few business days of the visit, that states for each sample what was found, whether the level reads normal or elevated against the baseline, the likely moisture source, and the honest next step. If everything reads normal, the report says so in plain words, and you are done. If something is elevated, it points to the one real problem and where it is coming from, so any money you spend goes to the right place instead of everywhere.

Why independent inspection is the whole point

The mold industry has a built-in conflict: the company that inspects for free is usually the company that gets paid to remove. That is not a reason to distrust every remover, but it is a reason to get the diagnosis from someone who does not profit from the cure.

That independence is not a marketing line, it is the business model. It is the same reason a home inspector should not also be the renovation contractor, and the same reason a good asbestos tester sells testing only.

How to choose a mold inspection company near you

Searching "mould testing near me" in London returns removal companies, franchises from other cities and home inspectors who mention mould in passing. Six questions sort them quickly:

1. Do you also do the removal? If yes, the inspection is the front end of a sale. That does not make every remover dishonest, but it is a conflict you should know about before you read their findings.
2. Is the inspection free? A free inspection is paid for by the removal quote that follows it.
3. Which lab analyzes the samples? You want an accredited third-party laboratory and a chain-of-custody record, not an in-house reading or a petri dish left on the counter.
4. What is the price, before you book? A mould inspection is a defined job. A company that will not give a range on the phone is keeping its options open.
5. Will you tell me if I do not need a test? Health Canada says that in most cases there is no need to measure mould in indoor air or name the species. A good inspector says so when it applies.
6. What does the report contain? Per-sample results, the outdoor comparison, the likely moisture source, photos and the next step. A verbal "you have a problem" is not a report.

Our answers: no, no, an accredited lab, $300 to $600 published, yes, and a written report you own. Read the price breakdown on the mold inspection cost page.

A mold inspector is not a home inspector

A general home inspection is a broad visual survey of a whole house. It will often note staining, high moisture or a musty smell and write "recommend further evaluation", and that is where it stops: it does not take mould samples or send anything to a lab. A mould inspection picks up exactly where that line on the report leaves off. If you are in a condition period on a purchase, the buying a house with mold guide covers the timing.

Where we inspect in London

We cover the whole city: Old North, Old South and Woodfield, Byron, Hyde Park, Masonville, Oakridge, Westmount, White Oaks, the student streets near Western and Fanshawe, and the towns around London. Most visits are booked within a day or two of the call, and rush lab turnaround is available when a closing date or a tenant dispute cannot wait. Call (548) 290-9788 and tell us what you are seeing.

London homes and where they grow mold

London's housing stock and weather point mold to a few predictable places, and knowing them makes an inspection faster and more thorough.

• Basements, especially in the older neighbourhoods (Old North, Old South, Woodfield) where fieldstone and block foundations, past flooding, and low ventilation combine.
• Student rentals around Western and Fanshawe, where a lot of people, a lot of showers, and deferred maintenance meet.
• Attics, where roof-vent and bathroom-fan issues plus London's freeze-thaw create condensation that feeds growth on the sheathing.
• Bathrooms and around windows, the everyday condensation spots in any home.

Common questions