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Basement Cleaning Services — From Storage Clutter to Mould Prevention
Your basement is the most moisture-prone, least-maintained and most frequently neglected space in your home. According to Health Canada’s Indoor Air Quality Guidelines, mould will begin to grow in an area with excessive moisture within 48 hours. Professional basement cleaning protects your home, your air quality and your family’s health.
Why basement cleaning is a health priority
Montreal Basements and Moisture: A Health Risk You Can’t Ignore
Health Canada identifies basements as one of the most common sites of indoor moisture problems, because they are below grade, receive groundwater seepage during Montreal’s spring thaw and snowmelt, and often have inadequate ventilation. People living in damp homes with mould are more likely to experience respiratory symptoms, and people with asthma or severe allergies face elevated risk.
The Canadian Centre for Occupational Health and Safety (CCOHS) recommends keeping indoor humidity between 30% and 50% to prevent mould growth. Montreal’s spring-summer-fall humidity cycle, and the condensation generated by temperature differentials between basements and the heated main floor, makes this especially challenging without professional cleaning and moisture management support.
The Montreal Cleaners provides comprehensive basement cleaning services for Montreal, Laval, Longueuil, North Shore, South Shore, Quebec, Ottawa, Gatineau, and the Greater Montreal Area homes — from basic storage area organization and floor cleaning to mould surface treatment, deodorizing and post-flood remediation preparation.
Health Canada-aware protocols · Mould surface treatment · All basement types. Get a free quote →
48h
Time before mould
begins to grow (Health Canada)
30–50%
Ideal indoor humidity
range (CCOHS)
20%+
Canadian homes
affected by mould
Free
Quote within
24 hours
Complete basement cleaning scope
What We Clean in Your Montreal Basement
Each basement type — finished recreation room, unfinished storage, laundry area or mechanical room — has specific cleaning requirements. We address all of them.
🪣 Floors & Walls
- Concrete floor scrubbing and degreasing
- Wall surface cleaning and deodorizing
- Window well cleaning
- Foundation wall inspection-ready cleaning
- Floor drain clearing and sanitization
📦 Storage & Organization
- Storage shelving dusting and cleaning
- Cardboard removal (mould risk) and advice
- Around storage area floor cleaning
- Seasonal item storage area reset
🫧 Mould Prevention
- Surface mould treatment (small/medium areas)
- Dehumidification support and advice
- Moisture-prone area identification
- Ventilation improvement guidance
- Post-treatment deodorizing
🧺 Laundry & Utility Areas
- Around and behind washer/dryer cleaning
- Laundry sink and drain cleaning
- Water heater and furnace area
- Pipe and duct exterior surface cleaning
- General sanitation of mechanical room
Important: Health Canada recommends that large mould areas (single patch over 3 sq metres) should be assessed by a qualified professional and not cleaned by unqualified persons. Our teams assess before any mould cleaning and coordinate with remediation specialists for large-scale mould issues.
The Best Basement Cleaning Services
The Montreal Cleaners is the leading cleaning company providing the best quality basement cleaning service at possible low rates. Our Montreal Maids serve you in all types of cleaning services.
One of the most cluttered places in your basement and usually people don’t pay attention to its cleaning. You may keep your spare tools, paint buckets, tires, broken and repairable furniture and many other things there. In short, you stay almost every additional object there in the basement. As there is a massive amount of clutter and material things, people feel a headache to clean it.
If you want to keep it clean and you don’t have ample and energy to clean it. Let us know about your requirements and needs relating to cleaning. We provide you with the best quality Basement Cleaning Services. Rearrange all the objects over there and make space for new things. There are some tasks which require more labour force and energy to disinfect that. Basement Cleaning Service itself a labour-intensive job and require time and energy. Our professional cleaners not only have that needed power, but they possess all the necessary skills and expertise to clean it.
Our Basement Cleaning Service Tasks
- Wipe off the dust buildup from the ceiling fans, lights, and stainless steel fixture
- Thoroughly clean the furniture
- Clean the mirrors and glasses
- Clean all the horizontal and vertical surfaces
- Windows, walls, doors, and baseboard cleaning
- Remove the dust buildup from floor
- Remove and replace the trash bags
- Wash and vacuum the floor
These are the essential tasks which we perform in basement cleaning services. We deliver all of these cleaning tasks with full care and attention and make sure you get a neat, clean, tidy, and hygienic place.
Transparent pricing
Basement Cleaning Cost
| Service Type | Size | Estimated Price | Duration |
|---|---|---|---|
| Basic storage clean (unfinished) | Up to 400 sq ft | $150–$250 | 2–3 hours |
| Full unfinished basement | 400–800 sq ft | $220–$380 | 3–5 hours |
| Finished basement / rec room | 400–800 sq ft | $180–$320 | 2–4 hours |
| Post-flood / post-water damage clean | Any size | Custom quote | Custom |
| Add: mould surface treatment | Small/medium areas | +$80–$200 | +1–2 hours |
Client results
Montreal Homeowners Who Reclaimed Their Basement
“Our NDG triplex basement smelled musty every spring. Montreal Cleaners identified a moisture-prone corner, cleaned the surface mould and deodorized everything. The smell is gone. Incredible difference.”
Claudine H. — Triplex owner, NDG
“20 years of storage in a Laval basement. Boxes, old furniture, decade-old paint cans. The Montreal Cleaners organized, cleaned and disposed of everything over two days. We could actually use the basement after.”
François D. — Homeowner, Laval
“After spring flooding left mud and residue throughout our Brossard basement, Montreal Cleaners came within 48 hours. Full floor scrubbing, deodorizing, surface mould prevention treatment. They were a lifesaver.”
Andrée B. — Homeowner, Brossard
📍 Valid Across Greater Montreal
Montreal, Laval, Longueuil, North Shore, South Shore, Quebec City, Lévis, Blainville, Brossard, Boucherville, Gatineau, Ottawa, Outaouais, Châteauguay, Griffintown, Bonaventure, Plateau Mont-Royal, Old Montreal, Terrebonne, Saint-Eustache, Boisbriand, Nun’s Island, Repentigny, Rivière-des-Prairies, Pointe-aux-Trembles, Westmount, Saint-Sauveur, Sainte-Thérèse, Candiac, Saint-Bruno-de-Montarville, Hampstead, Verdun, Outremont, Granby, Montérégie, Sherbrooke, Estrie, LeGardeur, Lachenaie, Deux-Montagnes, Sainte-Rose, Laval-sur-le-Lac, Auteuil, Chomedey, Duvernay, Fabreville, Sainte-Dorothée, Saint-François, Vimont, Pont-Viau, Saguenay, Mauricie, Trois-Rivières, Lanaudière, Baie-d’Urfé, Beaconsfield, Côte-Saint-Luc, Dollard-des-Ormeaux, Dorval, L’Île-Perrot, Montreal East, Montreal West, Mount Royal, Pointe-Claire, Sainte-Anne-de-Bellevue, Gracefield, Maniwaki, Thurso, Alma and surrounding regions.
Wiping off the dust
The first thing we do it to put all the objects out of the basement and start cleaning off the dust from the ceiling. There may be dust buildup on the fans and ceilings. Our professional Montreal Maids deal with dust accumulation efficiently. If there are any cobwebs in the upper corners and on the roof, they remove them at priorities. There may be rust spots on the stainless steel fixture we remove the spots from there.
Thorough Furniture Cleaning
People keep their spare and repairable furniture in the basement. The furniture cleaning is also a part of Basement Cleaning. We are the professional and leading cleaning company, understand the value of your assets. We remove all the dust from there and keep them protected from further buildup.
Walls, Windows, Doors, and Baseboard Cleaning
We perform a thorough and comprehensive cleaning considering every portion of your basement. Our cleaning staff has strict instruction not to overlook and ignore even a small detail. They wipe off dust accumulation and spots from the walls, doors, windows, and the baseboard you have in your basement.
Dusting, vacuuming and washing the floor
All the dust, dirt, trash, and mess falls on the floor that needs to be cleaned. Our professional cleaners provide you with thorough floor cleaning services as well. They remove all the grime, grease, and spills spots from the floor surface.
These are the critical basement cleaning tasks which we perform. You can hire our cleaning services any time you need it. Our cleaners will lead you to the next level of quality services.
Frequently asked questions
FAQ — Basement Cleaning Services
How do I know if my Montreal basement has a mould problem?
The most common signs are a musty or earthy odour (even without visible mould), visible stains or discolouration on walls and floors, peeling paint, white powdery salt crystals (efflorescence) on walls, and respiratory symptoms in residents that improve when they spend time away from home. Health Canada’s moisture and mould guide recommends immediate action when any of these signs are present.
Can The Montreal Cleaners treat mould in a basement?
We can clean and treat small-to-medium areas of surface mould (under 3 sq metres per Health Canada’s guidelines). For larger mould infestations, we recommend and can coordinate with certified mould remediation specialists. We always assess the extent before beginning any mould treatment work.
What causes basement moisture problems in Montreal specifically?
Montreal’s climate creates unique basement moisture challenges: heavy spring snowmelt and rain increases groundwater pressure against foundations; seasonal freeze-thaw cycles create micro-cracks in foundation walls; and our cold winters cause significant condensation on basement surfaces where warm indoor air meets cold foundation walls. These factors make Montreal basements particularly vulnerable to moisture and mould.
How often should a Montreal basement be professionally cleaned?
Once per year is the minimum recommendation — ideally after spring thaw (May–June) when moisture levels are highest. Basements with known moisture issues should be inspected and cleaned semi-annually. After any flooding or water intrusion event, cleaning and mould prevention treatment should be done within 24–48 hours.
Reclaim Your Basement — Free Quote in 24 Hours
Montreal’s climate is hard on basements. Let’s protect yours. Free quote within 24 hours, transparent pricing, mould-aware protocols.