How-to · 4 min read · Updated 6 November 2026
After-builders office cleaning: stages, dust risks and a checklist
Why refurbishment dust is different
Cutting plasterboard, sanding filler, drilling concrete and cutting tiles creates very fine dust that settles on every surface and keeps falling for days. It gets inside vents, light fittings, door frames and on top of ceiling tiles. Ordinary vacuums can push the finest particles back into the air, and some construction dust contains respirable crystalline silica, which HSE treats as a serious health risk.
For that reason, after-builders cleaning uses industrial vacuums designed for fine dust, typically M-class or H-class, along with damp wiping, and is planned around when trades have actually finished.
The usual stages
| Stage | When | What happens |
|---|---|---|
| Builders clean | When main trades finish | Debris, offcuts and heavy dust removed, floors swept with extraction, protection lifted |
| Sparkle clean | After snagging and before handover | Every surface cleaned top to bottom, glass, fittings, floors and kitchens |
| Touch-up clean | Just before staff move in | Dust from furniture installation and IT work removed, final check |
Smaller jobs, such as a single floor redecoration, may combine these into one visit, but larger fit-outs almost always need at least two.
Step by step: the sparkle clean
- Start at high level: vents, light diffusers, tops of doors, partitions and cable trays
- Clean ceiling grilles and remove dust from on top of reachable ceiling tiles where agreed
- Wipe walls, frames and skirting boards, removing dust before it is smeared
- Clean windows, frames, sills and glazed partitions inside and out where accessible
- Remove paint splashes, labels and adhesive from glass and fittings
- Clean kitchens and washrooms, including inside cupboards and appliances
- Vacuum carpets with an extraction vacuum, then hard floors with suitable machines
- Do a final wipe of touch points and a walk-round with the client
Safety and site rules
If the building is still a construction site, cleaners must follow the principal contractor's site induction and rules under the Construction (Design and Management) Regulations 2015. That can include PPE, signing in, permits for work at height and restrictions on which areas can be entered.
- Use suitable masks for dusty work
- Use extraction vacuums rather than dry sweeping fine dust
- Check the asbestos position before disturbing anything unexpected in older buildings
- Follow work at height rules for high-level cleaning
- Keep cleaning chemicals away from fresh paint and new finishes until they have cured
Protecting new finishes
New floors, worktops and paint are easily damaged by the wrong chemical or pad. Ask the fit-out contractor for any manufacturers' cleaning instructions, especially for LVT, natural stone, oiled wood and specialist coatings. Some new floors should not be wet cleaned or sealed for a set period after installation.
What to check before you sign off
- No dust on top of doors, frames and high shelves
- Clean vents and light fittings
- No paint, plaster or adhesive on glass, frames or sockets
- Kitchen and washroom fittings free of dust and protective film
- Floors clean right into corners and under radiators
- Lift and window tracks free of debris
Planning and pricing the clean
After-builders cleans are usually priced per job rather than per hour, because the amount of dust and debris varies so much. To get an accurate price, the cleaning team needs to know what has been done, what is left and when the building will be free of trades.
- Floor area and number of floors
- Type of work, such as a full strip-out or a light redecoration
- Whether a builders clean has already been done
- Amount of glazing and high-level surfaces
- Floor types and any specialist finishes
- Access for vans, parking and lifts for equipment
- The handover date and any working hour restrictions
As a guide, after-builders cleans tend to cost more than a standard deep clean of the same space, because of the extra time, equipment and waste involved. A one-off deep clean of a small office of around 100 m² typically costs £200 to £400, so expect an after-builders clean of a similar office to sit above that, depending on how much dust is left. Agree in advance who removes builders' rubbish and offcuts, as cleaners are not normally set up to take away construction waste.
Build the clean into the fit-out programme from the start. When it is left until the last day, there is rarely time to do the stages properly.
Frequently asked questions
How long does an after-builders office clean take?
A small office of around 100 m² usually takes a team one day for a sparkle clean, while larger fit-outs can take several days across stages. Time depends on how much dust is left, how much high-level work there is, and whether the builders clean was done properly first. Multi-floor fit-outs are often cleaned floor by floor as trades finish.
Can normal office cleaners do an after-builders clean?
Some can, but it needs the right kit and planning. Fine construction dust calls for extraction vacuums designed for it, high-level access equipment, and an understanding of site rules and new finishes. Regular cleaners using ordinary vacuums often leave dust that reappears for weeks. If your usual contractor offers it, check what equipment they will bring and how they plan the stages.
When should the after-builders clean be booked?
Book the builders clean for when main trades finish, the sparkle clean after snagging, and a final touch-up after furniture and IT installation. Booking the main clean too early is the most common mistake, as later trades bring dust straight back. Put each stage into the fit-out programme so dates move together if the works overrun.
after builders clean refurbishment construction dust fit-out
