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There is no honest per-square-foot number for a renovation clean quoted over the phone, and any contractor who gives you one has not asked the two questions that decide the price: how far the dust actually travelled, and how much occupied space has to be worked around. Neither is visible on a floor plan.
As a reference point, post-construction cleaning in Ontario runs roughly $0.20 to $0.50 per square foot depending on project type and condition. A renovation clean in an occupied building normally sits in the upper half of that band — call it $0.30 to $0.50 — or is quoted as a fixed project price instead.
The occupancy premium usually shows up in two places rather than as a higher rate: a minimum project charge, because a crew has to be mobilised whether the job is one room or a whole floor, and a phasing allowance where the space has to be released in sections instead of cleaned in one pass.
| What was renovated | Typical monthly cost | What that usually covers |
|---|---|---|
| Single room or office one meeting room, one office, one washroom | Minimum project charge | Full detail of the room plus the dust that reached the corridor and adjacent desks |
| Part of a floor a department, a suite, a clinic wing | $0.30 – $0.50/sq ft of affected area | Renovated area plus surrounding occupied space, worked in one or two phases |
| Whole floor office floor, retail unit, clinic | $0.30 – $0.50/sq ft, often fixed price | Full floor including corridors, washrooms and kitchen serving it |
| Phased, multi-area | Fixed project price | Sequenced hand-back, agreed area by area before work starts |
| Out-of-hours premium | Quoted with the job | Evening or weekend work where the floor cannot be sectioned |
Scope the affected area, not the renovated area
This is the single biggest reason renovation quotes come in low and then get disputed. Fine renovation dust travels well past the sealed zone — through doorways, along return air paths, and out on foot traffic — and settles on high ledges, light fixtures, blinds, monitors and inside filing areas. A quote written around the room the trades were in will leave you cleaning the rest of the floor yourself. Ask any bidder to walk outward from the renovation until the dust stops, and to quote that.
What pushes the price up, and what brings it down
Raises the quote
- The floor cannot be closed, so work is phased around occupancy
- Heavy demolition rather than a light refit
- Carpet that needs extraction rather than vacuuming
- Clinical or food-service space held to a higher finish standard
- Equipment-dense areas where every item is wiped individually
- A hard deadline that forces evening or weekend work
Lowers the quote
- The space can be closed for a full day
- Hard flooring rather than carpet
- Dust was well contained by the trades during the work
- A single defined zone rather than a whole floor
- Booking it alongside an existing cleaning contract
- Flexible timing rather than a fixed handover date
Where the money goes in a renovation clean
A renovation quote is usually one number covering a very uneven distribution of work. This is roughly how it splits.
| Area | What it needs | Why it costs what it does |
|---|---|---|
| High-level detail | Light fixtures, door frames, ledges, partition tops, blinds, vents | The part that gets skipped, and the reason a floor cleaned once needs cleaning again a week later. |
| The renovated room itself | Paint spots, adhesive residue, sticker and film removal, glass both faces | Detailed, slow work. Usually the smallest area and a large share of the hours. |
| Surrounding occupied space | Desks, monitors, keyboards, storage, floors in the areas dust reached | Priced by how far the dust went, which is why the walkthrough matters more than the floor plan. |
| Floors, twice | Washed, then washed again once airborne dust has settled | One pass is not enough after a renovation. A quote with one floor clean in it has not accounted for settling. |
| Vents and diffusers in the zone | Cleaned so the system stops redistributing settled dust | Filter changes stay with your HVAC contractor. |
| Phasing and hand-back | Sealing, sequencing, and a walk-through per area | Invisible on an invoice, and the difference between a floor you can use and one you cannot. |
Why it is not priced like post-construction
Post-construction cleaning happens in an empty shell. Nothing to protect, nobody in the building, and one continuous pass from one end to the other. That is why it prices cleanly per square foot.
A renovation clean has none of those conditions. The building is occupied, so work happens in sections and often out of hours. There is furniture and equipment in place, so surfaces are wiped individually rather than cleared and cleaned. The scope is not the room, it is wherever the dust reached. And the client is the occupier, not a builder — the standard is what a business needs to open on Monday, not what a purchaser signs off at handover.
If your project is a new build, a fit-out of an empty unit, or a handover to a purchaser, the other guide applies — see what post-construction cleaning costs, which carries the per-square-foot bands by project type.
What a renovation cleaning quote should state
The affected area, defined. Not "the renovated office" but the actual boundary the clean covers, agreed on the walkthrough.
Whether floors get one pass or two. Settling dust is real and a single pass after a renovation is a quote that will disappoint.
High-level work, itemised. Light fixtures, ledges, partition tops and vents either are or are not in scope. Silence usually means no.
The phasing plan. Which areas, in what order, released back when. Improvising this on the day is how a business loses an afternoon it had not budgeted for.
Any minimum charge, stated up front rather than discovered on the invoice.
Out-of-hours rates, if evening or weekend work is needed.
Designated substances are not part of this price
Renovation work in an older building can disturb materials regulated in Ontario as designated substances — asbestos being the most common, in drywall compound, floor tile and pipe insulation.
Identifying, removing and clearing those is licensed abatement work with its own testing, containment and documentation. It is not cleaning, it is not quoted as cleaning, and no cleaning contractor should offer to absorb it into a renovation clean.
If a designated substance is present, that work has to be completed and the space cleared by the appropriate contractor before a cleaning crew goes in. Any quote that appears to include it is a quote to walk away from.
These figures reflect typical Ontario market pricing in 2026 and are a guide for budgeting, not a quotation. Post-renovation cleaning is quoted per project after a walkthrough, because the two variables that drive the price — how far the dust travelled and how much occupied space must be worked around — cannot be assessed from a floor plan. Abatement of designated substances is separate, licensed work and is not included in any cleaning price.
Frequently Asked Questions
It is quoted per project after a walkthrough. As a reference point, post-construction cleaning runs roughly $0.20 to $0.50 per square foot, and a renovation clean in an occupied building normally sits in the upper half of that band — about $0.30 to $0.50 — or is quoted as a fixed project price. The occupancy premium usually appears as a minimum project charge and a phasing allowance rather than as a higher square-foot rate.
Because the two things that decide the price are not visible on a floor plan: how far the dust actually travelled beyond the work area, and how much occupied space has to be worked around. A quote given without seeing those is a guess, and it is usually the low guess that gets disputed later.
Per square foot, usually yes. An empty shell is cleaned in one continuous pass with nothing to protect; an occupied building is cleaned in sections, around furniture and people, often out of hours. In absolute terms a renovation clean is frequently the smaller invoice, because the area is smaller — but the rate on that area is higher.
It should cover the affected area, which is almost always larger than the renovated area. Fine dust reaches well past the sealed zone through doorways, return air paths and foot traffic. Ask any bidder to walk outward from the renovation until the dust stops and quote that boundary — a quote scoped to the room alone leaves you cleaning the rest yourself.
Yes, and it is the normal arrangement. The work is phased — one area sealed, cleaned and handed back before the next begins — or done in the evening and at weekends where the floor cannot be sectioned. The sequence should be in the quote, not decided on the day.
No, and it should not be. Disturbing designated substances during a renovation is licensed abatement work with its own testing, containment and clearance documentation. It has to be completed and the space cleared before cleaning starts. A cleaning quote that appears to include abatement is a reason to look elsewhere.
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