A builders clean is the last trade on site and the first thing the client sees. Everything up to that point can be excellent work, and it will still look unfinished if there is render splatter on the glass, grout haze across the tiles and plaster dust sitting on top of every door frame.
It is also the stage most often underestimated, because from a distance a finished build looks nearly clean. Here is what the work actually involves, in the order it happens, and what tends to go wrong when it is rushed.
What this covers
Why construction dust behaves differently
Household dust is mostly fibre and skin. Construction dust is ground mineral — plaster, render, concrete, tile and timber — and it is much finer, much heavier and mildly abrasive. Three consequences follow, and they shape the whole job.
- It keeps falling after work stops. Fine particles stay airborne for hours. Clean a room the same afternoon the sanding finished and you will have a visible film again the next morning.
- It hides above eye level. Door frame tops, cornices, light fittings, vent grilles, the top edge of skirtings, sliding door tracks and the inside lip of cabinetry all hold it.
- Wiping it dry makes it worse. Dry-wiping mineral dust across glass, stone or a painted finish drags grit over the surface. Vacuum first, then damp wipe, then a final dry buff.
That is also why dry sweeping a slab is the wrong move at the end of a build: it puts everything you just settled back into the air, where it lands on the surfaces you finished an hour ago. Vacuums with proper filtration, damp methods and appropriate personal protective equipment are standard practice for good reason — fine construction dust is not something anyone should be breathing.
The three stages of a post-construction clean
Stage one: the rough clean
This happens while trades are still coming and going. Offcuts, packaging, strapping and general debris are removed, floors are cleared so people can work safely, and the site is made presentable enough for inspections. It is not a finishing clean and it should not be priced like one — its job is access and safety.
Stage two: the builders clean
The main event, once the last dusty trade has finished. Everything gets taken down from the top: ceilings and cornices, light fittings, vents, the tops of doors and frames, window reveals and tracks, then walls, joinery inside and out, glass, wet areas and finally floors. Protective film comes off, stickers come off, adhesive residue comes off, and paint speckle is removed from glass and hardware.
Stage three: the final detail clean
Booked as close to handover or the client walk-through as possible. It picks up the dust that settled overnight, plus the fingerprints and scuffs that arrive with the last few site visits — touching up glass, polishing tapware and stainless, re-doing tracks and thresholds, checking the details somebody has since leaned on.
Most projects need at least stages two and three. Selling a single clean for a whole build is where disappointment comes from: the dust that falls between the builders clean and handover is real, and somebody has to deal with it.
Room by room: what actually gets done
Kitchen and joinery
Cabinet interiors are vacuumed and wiped — new joinery is full of sawdust and drill swarf in the corners of every drawer. Protective film comes off appliances, and the adhesive left behind by tape on tapware and handles is removed with an appropriate solvent rather than a blade. Silicone smears along the splashback edge are trimmed and cleaned, and the toe kick, the gap beside the dishwasher and the top of the overhead cabinets all get done.
Bathrooms and wet areas
Grout haze is the main job — the fine cement film left across tile faces after grouting, which looks like a dull cast until it is removed. Then silicone smears, protective coverings on baths and basins, plaster splash inside the shower, tapware polished, drains and wastes cleared of debris, and the exhaust grille wiped.
Floors
Tile floors need grout haze and adhesive dots removed before mopping. Timber and engineered boards need dust vacuumed out from between the boards and along the expansion gap at the skirting — mopping over that just turns it to paste. Carpet gets a slow, thorough vacuum, often twice, because construction dust settles deep into new pile. Where paint speckle has to be scraped, plastic blades and careful technique are the rule, and coated or tinted glass is never scraped at all.
Glass, frames and tracks
New glass collects render splatter, paint, silicone and protective film adhesive. Tracks and reveals are vacuumed before any water goes near them, because wet mineral dust in an aluminium track becomes a paste that is far harder to remove. This is finicky, slow work and it is the difference between a build that looks finished and one that does not.
What goes wrong on a rushed builders clean
- Cleaning too early. One more trade returns, and the whole exercise is repeated at someone’s expense.
- Protective film left on too long. Film on glass and joinery has a removal window. Leave it through a hot Melbourne summer and the adhesive bakes on, turning a two-minute peel into an hour of solvent work.
- Blades on the wrong surface. Scrapers on coated, tinted or toughened glass, or on powder-coated frames and stone, can leave permanent damage. If in doubt, chemistry and patience, not steel.
- No second pass. Dust that was airborne during the clean lands afterwards. Without a detail clean before handover, the client sees a film on every horizontal surface.
- No waste plan. A builders clean generates bags of packaging, film and debris. If there is no bin or skip on site, it all ends up stacked in the garage.
- No power or water. Vacuums, lighting and buckets all need services connected. Booking a clean before the power is on is a wasted day.
Scheduling it around the last trades
The sequence that works on most residential and small commercial projects looks like this: last dusty trade finishes, the site is given a settling period, the builders clean runs across one or more days depending on size, then a shorter detail clean lands as close to the handover or client walk-through as the program allows.
Apartment and commercial work adds logistics that are worth booking early: lift and loading dock times, after-hours access, parking permits, site inductions and waste disposal. None of it is difficult, but all of it takes a phone call that is easier to make a fortnight ahead than the night before.
What to have ready on site
- Power and water connected, and enough light to actually see a film on glass
- A bin or skip that is not already full, or a clear agreement about where waste goes
- Access sorted: keys, codes, lift booking, loading dock, parking, site induction
- A list of surfaces with special requirements — natural stone, tinted or coated glass, oiled timber, brushed brass, specialty paint finishes
- Confirmation that trades are genuinely finished, including the touch-up painter
- One site contact who can answer a question in the moment
Get those six things right and the clean is straightforward. Get them wrong and even a good crew loses half a day. If you have a handover date coming up, our post-construction cleaning and builders clean pages set out the full scope — send through the floor area, the stage the build is at and the handover date, and that is enough to plan around.
Questions we get asked
How long does a builders clean take?
It depends far more on finish detail than on floor area. Lots of glass, tiled wet areas, extensive joinery and complex lighting all add hours; a simple open-plan space with sealed concrete moves quickly. A site walk-through, or clear photos and a plan, is the only reliable way to estimate it.
Do we really need two cleans?
On anything with a formal handover, yes — a builders clean followed by a shorter detail clean. Fine dust falls for days, and the second visit is what the client actually sees. On smaller jobs the detail pass might only be a couple of hours.
Who removes the rubbish?
Agree this before the day. Cleaners routinely bag packaging, film and debris generated by the clean and place it in the site bin, but bulk construction waste, offcuts and materials removal is usually a separate arrangement. Say so in the scope either way.
Can you clean while trades are still on site?
For a rough clean, yes, and it helps. For the finishing clean it is counterproductive — you are cleaning behind people who are still making dust. If the program is tight, stage it: finish and lock off completed areas, then work through the rest.
Will the site stay dust-free after handover?
A finished building holds far less dust than an active site, but new buildings continue to shed a little for a while, particularly around unsealed concrete and freshly cut timber. That is one reason the first regular clean after occupation is usually a longer one — worth factoring in when you set the ongoing cleaning schedule for a new workplace.
