Professional Mould Removal in London Trusted by London's Landlords Since 2018

Mould is a type of fungus. It grows wherever there’s moisture, a food source (like plaster, wood, or paint), and not enough ventilation. In London’s older housing stock especially, those three conditions come together more often than people realise. Poor insulation, period properties, flat roofs, and high humidity levels in bathrooms and kitchens create the perfect conditions.

The most common species we see is Cladosporium, which appears as a dark green or black staining. Then there’s Aspergillus and, more seriously, Stachybotrys chartarum, which is what most people mean when they talk about black mould removal. Stachybotrys is the one you really don’t want to sit on for long. It produces mycotoxins that can irritate the respiratory system, trigger allergic reactions, and cause real health problems for children, the elderly, and anyone with a compromised immune system.

Not all black mould is the same species, and that’s exactly why proper mould testing matters before you start any treatment. Guessing is how you end up treating the wrong problem.

We offer a full range of mould removal services, from a single room to whole-building treatments. Here’s how our process typically works:

1. Mould Inspection London

Every job starts with a proper mould inspection. We assess the full extent of the mould growth, check moisture levels in walls and ceilings with specialist equipment, and identify the source of the problem. A mould inspection in London isn’t just about finding what’s visible. It’s about finding what isn’t.

2. Mould Testing

Where needed, we carry out mould testing to identify exactly what species is present and how severe the contamination is. This is particularly important in properties where occupants are experiencing health symptoms, in homes with young children, or after flooding. Mould testing also feeds into air quality testing, which tells us whether airborne spores are at a safe level. A lot of companies skip this step. We don’t.

3. Professional Mould Removal

Once we understand the situation fully, we carry out the removal itself. Depending on the severity, this can involve HEPA-filtered air scrubbing, antimicrobial treatments, removal of affected materials, and containment procedures to stop spores from spreading to other rooms. For serious black mould removal, we follow professional remediation protocols, not just surface cleaning.

4. Mould Remediation

Mould remediation is the stage most people overlook. It’s not just removing what you can see, it’s treating the underlying damp issue so the mould doesn’t come back in six months. Our mould remediation services address the source, improve ventilation where possible, and apply long-lasting biocide treatments. We also offer advice on how to keep conditions right going forward, because no treatment is permanent if the moisture source stays.

5. Water Damage Restoration

Mould and water damage go hand in hand. A burst pipe, a leaky roof, or even a bathroom with chronic condensation can lead to serious mould growth within 24 to 48 hours. Our water damage restoration service deals with the aftermath of water ingress, including drying, dehumidification, and making sure the environment is safe before any redecoration takes place.

We know this is one of the first things people want to know. The honest answer is that the mould removal cost depends on the size of the affected area, the species of mould involved, whether remediation of the underlying issue is needed, and how accessible the affected space is.

As a general guide, the mould removal average cost for a single room treatment in London starts from around £150 to £300, with larger or more complex jobs running into the thousands. Properties with significant black mould growth or water damage will sit toward the higher end. But we always provide a clear quote before any work begins, so there are no surprises. If you’re looking for mould removal cost information specific to your situation, get in touch and we’ll give you a straightforward assessment.

Compared to the cost of ignoring it, professional mould removal services are almost always the better financial decision. Mould spreads. The longer it’s left, the bigger the job becomes.

One of the questions we get asked most often is about mould removal and how often it actually needs doing. In an ideal world, once is enough, because a good mould remediation job treats the root cause and doesn’t just mask the symptoms. But in reality, some properties have ongoing moisture issues, particularly older London homes with poor ventilation, flat roofs, or condensation-prone windows.

If mould keeps coming back after treatment, that’s a sign the underlying cause hasn’t been addressed. Our mould inspection service is designed to find exactly that. We’d rather tell you there’s a structural damp issue than have you calling us every winter for the same bathroom wall.

We’re not a general cleaning company that happens to offer mould removal. Mould is literally all we do. Over 7 years, we’ve built up a detailed knowledge of London’s housing stock, the most common mould types we encounter here, and the approaches that actually work long term. We work with landlords, letting agents, housing associations, homeowners, and businesses across the city.

When people search for a mould removal company near me, they’re usually in a bit of a panic. Fair enough. Mould feels alarming, especially if you’ve found black mould near a bedroom or in a property with children. We try to take that stress off your plate from the first call. Clear pricing, fast response, honest advice. No jargon, no pressure.

If you’re looking for trusted mould removal companies in London with real experience and a track record you can verify, we’d love to hear from you.