Post-Construction / Builder's Clean SWMS

Post-construction or builder's clean is the final detail clean of a newly constructed or refurbished site before handover to the principal or end occupier. The work involves removing construction debris, fine respirable dust, adhesive residues, paint overspray, sharps such as off-cut screws, nails, broken glass and snapped utility blades, and chemical residues from sealants and form-release agents. Cleaners frequently work alongside trailing trades, on partially commissioned services, at heights on scaffolds or step platforms, and in confined plant rooms. Under WHS Regulation 2011 r291 and the harmonised WHS Regulations applicable in each Australian jurisdiction, this work meets the definition of High Risk Construction Work because it routinely involves work at heights above two metres, exposure to hazardous chemicals, airborne crystalline silica dust from gyprock and concrete residue, and the risk of puncture from sharps. A documented Safe Work Method Statement is therefore mandatory before any worker commences the task on site.

Hazards identified

7 hazards covered, sorted by priority.

Control measures

Hierarchy-of-controls order: elimination → substitution → isolation → engineering → administrative → PPE.

1. 1Elimination — Sequence builder's clean only after all sharps-generating trades have demobilised and the site supervisor has issued a written trade-clear permit confirming no live works remain
2. 2Elimination — Remove all bulk construction debris by labourers under the principal contractor's scope before detail cleaners enter, eliminating heavy manual handling and large sharps exposure
3. 3Substitution — Replace solvent-based adhesive removers with citrus-based or water-soluble alternatives meeting GECA Cleaning Products standard to reduce VOC inhalation and dermal absorption risk
4. 4Substitution — Use pre-saturated microfibre wipes instead of decanted spray bottles to substitute aerosolised chemical exposure with controlled surface contact application
5. 5Engineering — Operate H-class HEPA vacuums compliant with AS/NZS 60335.2.69 for all dust pick-up; prohibit dry sweeping and compressed air blow-down on all internal surfaces
6. 6Engineering — Establish localised exhaust ventilation or open building zones to achieve minimum six air changes per hour during solvent use, verified by site ventilation plan
7. 7Administrative — Conduct daily pre-start briefing using this SWMS, sign-on register, and trade-clearance checklist; rotate workers off dust-generating tasks every ninety minutes
8. 8Administrative — Implement lockout-tagout verification with the site electrician confirming circuits are de-energised prior to damp cleaning any fitting, switchboard or GPO penetration
9. 9PPE — Issue P2/N95 respirators fit-tested per AS/NZS 1715, cut-resistant Level D gloves to AS/NZS 2161.3, safety eyewear to AS/NZS 1337.1, and puncture-resistant footwear to AS/NZS 2210.3
10. 10PPE — Provide chemical splash aprons, nitrile gauntlets and full-face shields when decanting or applying acidic and solvent-based products, with eyewash station within ten metres of use

Applicable Codes of Practice

High-Risk Construction Work triggered

Worked example

On a recently completed three-storey medical centre fit-out, the cleaning supervisor arrives at 6:30am to deliver the pre-start brief for a four-person builder's clean crew. Using this SWMS at the site office whiteboard, she walks the team through each hazard line: sharps in the level two consult rooms where the joiner snapped utility blades the previous day, residual silica dust on the cornices after gyprock sanding, and a 2.4 metre ceiling height in the reception void requiring a fibreglass step platform. The crew reviews the hierarchy of controls and confirms H-class HEPA vacuums, cut-resistant gloves and P2 respirators are loaded on the trolley. Each worker signs the SWMS sign-on register. Mid-task at 10:15am, the supervisor is alerted that the electrical contractor has returned to terminate a missed data outlet on level one. She halts damp cleaning in that zone, annotates the SWMS dynamic risk section to record the change, isolates the affected circuit with the site electrician under lockout-tagout, and redeploys two cleaners to the level three amenities until clearance is reissued. At completion, the signed SWMS, daily inspection sheet and waste manifest are uploaded to the principal contractor's compliance portal, satisfying record retention obligations and providing audit evidence for the handover certification package.

Related legislation

• WHS Act 2011 (model)
• WHS Regulation 2025
• Managing the Risk of Falls at Workplaces CoP

Frequently asked questions