After a renovation, your space looks great — but it's not livable yet. Construction dust is finer than regular household dust, and it settles on every surface, inside every cabinet, and into every vent in your home. A standard cleaning won't cut it.
 *Photo: Unsplash*
Why Post-Renovation Cleaning Is a Category of Its Own
Construction generates three types of debris that don't exist after regular use: ultra-fine particulate dust (drywall compound, silica from tile cutting, wood sanding residue), chemical residues (paint, primer, adhesive, grout sealer, caulk), and physical debris (offcuts, packaging, tape). All three require different treatments — and different equipment.
Fine drywall dust is particularly persistent. It's 50–100 microns in diameter, small enough to float for hours before settling. It penetrates cabinet interiors even when doors were closed throughout the renovation. It coats the inside of ductwork and recirculates for weeks if the HVAC system isn't addressed. A standard vacuum without a HEPA filter doesn't capture it — it just moves it around.
This is why post-renovation cleaning typically takes 2–4× longer than a standard [deep clean](/en/services/deep-cleaning), and why it's done in phases rather than a single pass.
The Complete Post-Renovation Cleaning Checklist
Phase 1 — Rough Clean (During or Just After Trades)
The rough clean removes bulk debris so the detail team can access all surfaces properly.
- Remove all construction waste: offcuts, packaging, plastic sheeting, tape, buckets
- Dry-sweep or HEPA-vacuum all floors before any wet mopping — wet mopping fine dust creates a paste that's much harder to remove
- Clear all horizontal surfaces for the detail clean
- Remove any protective coverings from fixtures and flooring that trades installed
This phase is often done by the renovation contractor. If it isn't, the cleaning team handles it first — and it adds time.
Phase 2 — Detail Clean (Room by Room)
#### Kitchen
The kitchen accumulates construction dust on top of any existing residue. Post-renovation kitchen cleaning includes:
- All cabinet interiors: wiped with microfibre cloths; shelves removed and cleaned separately where removable
- Range hood: degreaser applied, filter removed and soaked, interior grease trap cleaned
- Countertops: cleaned with the correct product for the material (stone-safe cleaner for quartz and granite; manufacturer-specified product for solid surface or laminate)
- Backsplash grout: light scrub with pH-neutral cleaner to remove mortar haze from new tile installation
- New and existing appliances: protective film removed, surfaces wiped
- Sink and faucet: polished; aerator flushed
- Floors: dry-swept first, then damp-mopped twice — one pass to lift residue, one pass to rinse
#### Bathrooms
- All new fixtures: protective film removed, polished with glass/chrome cleaner
- Grout: new grout haze removed with diluted tile cleaner (confirm grout is fully cured before any scrubbing)
- Shower and tub surround: adhesive residue from tile installation removed
- Toilet: cleaned inside and out; base caulk line wiped
- Vanity cabinet interior: wiped; mirror polished; faucet polished
- Ventilation fan: dust from installation removed; cover cleaned
#### Bedrooms and Living Areas
- Closet interiors: all shelving, rods, and floors wiped down
- Window sills, frames, and tracks: construction dust accumulates heavily in these channels
- Baseboards: wiped with damp microfibre to remove dust without damaging new paint
- Light fixtures and ceiling fans: blades, globes, and bulbs wiped; installation fingerprints removed from new fixtures
- Walls: spot-checked for paint overspray or smudges and wiped if needed
- Door frames and hardware: polished; protective labels from new hardware removed
- Floors: hardwood HEPA-vacuumed first, then cleaned with a wood-safe product (never steam, no excess water); carpet HEPA-vacuumed in overlapping rows; new LVP damp-mopped with manufacturer-approved product only
#### HVAC, Vents, and Air Quality
This is the most commonly skipped step — and the one with the longest tail if ignored.
- All vent covers: removed, washed, and reinstalled
- Return air grilles: vacuumed with HEPA attachment
- Furnace filter: replaced (construction dust loads filters in days — a clogged filter recirculates debris)
- Electric baseboards: fins vacuumed with a brush attachment — accumulated construction dust burns off and smells during the first heating cycle if not removed
- Note: full duct cleaning (rotating brush in ductwork) is a separate HVAC service, typically $300–600 in Montreal, performed by an HVAC company
Montreal Housing Types: What Changes
Pre-War Triplexes and Duplexes (1890s–1940s)
If you renovated a pre-war unit, expect specific material considerations:
- Plaster ceilings and walls: Use only microfibre cloths and a pH-neutral cleaner. No steam or excess moisture — plaster absorbs water and can crack or stain
- Original hardwood floors with oil finish: Never steam-clean. Use a wood-safe, barely-damp microfibre mop and a wood floor cleaner formulated for oil-finish surfaces
- Cast-iron radiators: The fins are fine dust traps. Vacuum with a brush attachment, then wipe each fin with a damp cloth before radiators are turned on
- Exterior iron staircases: If trades tracked debris in from outside, treat the staircase separately from the interior clean — the salt-sand-paint chip mixture requires its own approach
Postwar Bungalows and Split-Levels (1950s–1980s)
- Forced-air heating with ductwork: Replace the furnace filter immediately after renovation and again 30 days later — dust loads filters fast in the weeks post-renovation
- Attached garage threshold: If the garage was used as a staging area, dry-sweep the salt-oil-compound residue at the interior door before any wet cleaning
- Finished basements: Stack-effect air movement carries construction dust from upper floors to basement vents and surfaces. Clean the basement last, after the upper floors are done
Modern Condos and New Builds (1990s–Present)
- DCC (Damage and Construction Compliance) documentation: Many Montreal condo boards require documented professional post-renovation cleaning before approving the renovation permit close-out. Keep your invoice
- LVP and engineered hardwood: Do not use steam mops. Use only the manufacturer-recommended product
- Fan coil unit filters: In-unit fan coil filters trap construction dust rapidly. Clean or replace the filter after renovation
Post-Renovation Cleaning Costs in Montreal (2026)
Costs depend on the renovation scope, square footage, and dust load generated by the work.
| Home Size | Cosmetic Renovation | Full Renovation | |---|---|---| | 1 BR / 600–800 sq ft | $280–$380 | $380–$520 | | 2 BR / 900–1,200 sq ft | $360–$480 | $480–$680 | | 3 BR / 1,200–1,600 sq ft | $450–$600 | $600–$850 | | 4+ BR or full house | $580–$750 | $750–$1,100 |
*These are Montreal market ranges (2026). Post-renovation rates are higher than regular deep cleans due to HEPA equipment requirements, extended time, and the multi-phase process. Duct cleaning, if needed, is a separate cost.*
For a full breakdown of cleaning costs by service type and home size, see our [Montreal cleaning cost guide](/en/blog/how-much-does-cleaning-cost-in-montreal).
DIY vs. Professional for Post-Renovation Cleaning
You can handle the rough clean yourself — bulk debris removal, dry-sweeping, removing protective coverings. Where professional equipment makes a genuine difference:
- HEPA filtration: A standard shop vac recirculates fine particulate into the air. A HEPA-certified commercial vacuum captures it permanently
- Microfibre system: Professional teams replace contaminated microfibre pads after each room. A single consumer mop spreads residue from room to room
- Surface-sequenced protocol: Knowing to dry-clean before wet-clean, ceiling before floor, and which products are safe for which post-renovation surfaces prevents damage and re-work
- Time: A two-person professional team completes a full post-renovation clean in 4–6 hours that would take a solo homeowner a full weekend
See our comparison of [deep cleaning vs. standard cleaning](/en/blog/deep-cleaning-vs-standard-cleaning-montreal) for more on when professional equipment matters.
If you're cleaning before moving out of a renovated rental, the [move-out cleaning checklist for Montreal](/en/blog/move-out-cleaning-checklist-montreal) covers the TAL-specific standard required by Quebec lease law.
Ready to book? Sparkling Stays provides post-renovation cleaning across Greater Montreal. [Book online](/en/book-now) or call 438-867-8770. See our [post-renovation cleaning service page](/en/services/post-renovation-cleaning) for full details.
FAQ
Q: How soon after renovation can we schedule a post-renovation clean?
A: As soon as the trades are done and the site is clear of loose debris and tools — ideally 24–48 hours after the last trade finishes. This gives airborne dust time to settle without letting it bake onto surfaces. Schedule before moving furniture back in so the team has unobstructed access.
Q: Do we need to be present during the post-renovation clean?
A: No. Most clients provide access via lockbox, building super, or doorman. For condo buildings, arrange a loading-dock booking if we're bringing heavy equipment. We can work while the space is empty — preferred, since furniture and boxes won't be in the way.
Q: Does post-renovation cleaning include duct cleaning?
A: We cover vent cover removal and cleaning, return-air grille vacuuming, and filter swap (if you provide a replacement filter). Full duct cleaning — a rotating brush inserted into the ductwork — is an HVAC specialty service typically performed by a separate company. If your renovation generated significant drywall dust near return-air grilles, we recommend scheduling duct cleaning before the post-renovation clean, then doing our clean after.
Q: How is post-renovation cleaning different from a regular deep clean?
A: A [deep clean](/en/services/deep-cleaning) targets accumulated household grime: soap scum, grease build-up, limescale, and overlooked surfaces. A post-renovation clean uses HEPA equipment, a phase-sequenced dust-removal protocol, and construction-specific residue treatments — mortar haze, adhesive residue, paint overspray, manufacturer labels. The cleaning agents, equipment, and sequence are different.
Q: Can Sparkling Stays provide documentation for a condo DCC close-out?
A: Yes. We can provide an itemized invoice that confirms professional post-renovation cleaning was completed — the standard that Montreal condo boards typically require as part of the renovation permit close-out. Let us know when booking if you need this documentation.
Q: How long does a post-renovation clean take?
A: For a 2-bedroom condo with a full renovation, expect 5–8 hours for a 2-person team. For a 4-bedroom house with a complete gut renovation, expect 8–14 hours. Factors that increase time: multiple trades (more dust layers), hardwood floors (require careful HEPA then damp-mop sequencing), and pre-war surfaces that require extra care with pH-neutral products.
