Health and safety breaches

Suspected asbestos during demolition or renovation

Asbestos fibres can create serious health risks if disturbed. For residential demolition or refurbishment, a construction manager must not let work continue on suspect material until competent advice, testing, controls, and lawful removal/disposal requirements are confirmed.

Demolition / pre-constructionasbestosdemolitionrenovationhealth and safetyworksafehazardous materialLast reviewed 11 August 2026

What it looks like on site

Old fibre-cement sheet, soffit lining, textured coating, vinyl flooring, pipe lagging, roofing, backing board, or unknown brittle board is exposed
Workers are about to cut, drill, sand, break, waterblast, sweep, or remove suspect material
Dust, broken fragments, or waste from older material is present after demolition starts
No asbestos survey, sampling result, demolition methodology, or removal evidence is available

Possible causes

Older house materials were not checked before demolition or refurbishment
Scope changed and hidden material was uncovered
Subcontractor assumed the material was safe because it looked common
Asbestos survey, sample result, removal clearance, or waste evidence was not requested before work started

Immediate action

1Stop work in the affected area immediately. Do not cut, drill, sand, sweep, break, move, waterblast, or bag the suspect material.
2Isolate the area so workers, visitors, clients, neighbours, and other trades cannot enter or disturb dust/fragments.
3Tell the builder/project manager and record who was told, when, and what work was stopped.
4Photograph from a safe distance only. Do not touch or move the suspect material for a better photo.
5Check whether an asbestos survey, sample result, removal plan, clearance, or disposal evidence already exists before work resumes.

Step-by-step fix

1Confirm the exact location, material type, room/area, and work activity that exposed the suspect material.
2Check the project file for an asbestos survey, demolition/refurbishment assessment, prior sample results, and removal/clearance records.
3If the material has not been verified as non-asbestos, arrange competent assessment/testing or specialist asbestos advice before work resumes.
4Update the hazard register, site induction/toolbox talk, exclusion area, programme, and affected trade sequence.
5If removal is required, confirm the removal method, contractor competency/licensing requirements, waste handling, clearance/evidence, and re-entry conditions from WorkSafe guidance and specialist documentation.
6Only release the area after the required evidence is received and filed. Record delay, cost, client notification, and follow-up controls in the daily report.

What not to do

Do not assume a material is safe because it looks common, painted, old, or previously disturbed.
Do not sweep, vacuum with ordinary vacuums, cut, drill, sand, scrape, break, waterblast, or move suspect material.
Do not send untrained workers to remove or bag suspect asbestos-containing material.
Do not restart work until the required competent advice, testing, removal/clearance evidence, and site controls are in place.

Verification

Source / where to check

Use current official information and the controlled documents for the actual project.

WorkSafe NZ asbestos

Use before demolition, refurbishment, or disturbance of possible asbestos-containing material.

WorkSafe NZ construction

Use WorkSafe NZ for construction health and safety duties, risk management, and practical guidance for residential construction work.

Auckland Council building consents

Auckland Council explains local building consent processes, CCC, related certificates, producer statements, LBP notification, and whether resource consent may also be needed.

Consented drawings and specifications

The issued consent drawings, stamped specifications, engineering drawings, RFIs, minor variations, and amendments control the specific project.

Insufficient data to verify

Insufficient data to verify — confirm against the current consented drawings, specifications, Auckland Council requirements, Auckland Unitary Plan, NZ Building Code, relevant NZ Standard, consultant advice, manufacturer instructions, insurance broker, insurer, lender, lawyer, accountant or project contract.

Project-specific consented documents and professional advice override generic guidance.

Who to contact

Builder/project manager immediately
Client/developer so cost, delay, and specialist engagement are understood
Competent asbestos surveyor/assessor or licensed asbestos removal contractor where required
WorkSafe NZ guidance before disturbing or removing suspect asbestos-containing material
Council/BCA if demolition, inspection sequence, consent conditions, or waste handling is affected

What to photograph

Overall area showing where the issue sits in the site or room
Close-up of the defect with a tape, level, datum, product label, or drawing mark where useful
The related drawing/detail beside the issue if practical
The corrected work before it is covered

What to record

Date/time, weather if relevant, location, trade, workers present, plant/material involved
Drawing/specification/RFI/inspection reference used to assess the issue
Immediate action taken, who was contacted, who owns the fix, and due date
Delay/cost/variation impact and whether an inspection must be rebooked

Documents to check

Pre-demolition asbestos survey or refurbishment survey where available
Sampling/test results from a competent person/laboratory
Asbestos removal plan/methodology and removal contractor records where required
Waste tracking/disposal evidence and clearance documentation where required
Site-specific safety plan, hazard register, induction/toolbox record, incident/near-miss report if exposure may have occurred

When to escalate

Escalate to the builder/project manager when safety, cost, programme, trade responsibility, or client communication is affected.
Escalate to the architect/designer when dimensions, layout, specified products, appearance, weathertightness details, or consented design intent are unclear.
Escalate to the engineer when foundations, framing, bracing, retaining, fixings, penetrations, or structural adequacy may be affected.
Escalate to the council inspector/BCA when an inspection result, minor variation, amendment, or CCC evidence may be affected.
Escalate to the client/developer when the decision changes cost, time, selection, layout, appearance, or risk.

Inspection impact

If the issue affects an inspection area, record whether the inspection must be delayed, rebooked, failed item closed, or discussed with the council inspector. Do not conceal the work until the inspection/evidence requirement is satisfied.

Cost impact

May create remedial labour, replacement material, testing, consultant, reinspection, protection, delay, or variation cost. Price the approved remedy before proceeding where the contract permits.

Programme impact

Treat the affected activity and dependent work as constrained until the condition, information, approval, inspection, and recovery sequence are confirmed.

Compliance impact

Contract impact

Check instruction authority, notice timing, RFI and variation requirements, delay records, evidence, payment implications, and who carries the risk under the signed contract.

Example wording for daily report / site email

Suspected asbestos: suspect material identified at [location]. Work stopped and area isolated. Photos taken from safe distance. Checked project file for asbestos survey/sample/removal evidence. Contacted [builder/PM/client/specialist]. No disturbance/removal to occur until competent assessment and required controls/evidence are confirmed. Programme impact: [impact].

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