After asbestos removal work is completed in New Zealand, you should receive a clearance certificate before anyone re-enters or reoccupies the work area. This document is your legal proof that the area has been properly cleared and is safe. Knowing what it must contain protects you as a homeowner and ensures the work meets NZ regulations.
Why a Clearance Certificate Matters
Asbestos is a serious health hazard. Inhaling asbestos fibres can cause mesothelioma, asbestosis, and lung cancer — diseases that may not appear for decades. In New Zealand, asbestos removal is tightly regulated under the Health and Safety at Work (Asbestos) Regulations 2016, administered by WorkSafe NZ. A clearance certificate is the final confirmation that removal has been done correctly and the area is safe to re-enter.
Without a valid certificate, you have no independent assurance the job was completed properly.
Who Can Issue a Clearance Certificate?
This is critical: a clearance certificate cannot be issued by the same person or company that did the removal work. It must be issued by an independent licensed asbestos assessor.
In New Zealand, asbestos assessors must hold a Class A or Class B licence issued under the Health and Safety at Work (Asbestos) Regulations 2016:
- Class A assessors can assess friable (crumbly, high-risk) and non-friable asbestos removal work.
- Class B assessors can only assess non-friable asbestos removal work.
Always check that your assessor holds the correct licence class for the type of removal carried out. You can verify licences through WorkSafe NZ.
What Must the Certificate Include?
A proper clearance certificate in NZ should contain all of the following elements:
1. Assessor Details
- Full name and licence number of the independent assessor
- Licence class (A or B) and expiry date
- Contact details and company name
2. Site and Job Information
- Full address of the property where removal took place
- Description of the location within the property (e.g., roof space, bathroom, exterior cladding)
- Date(s) the removal work was carried out
- Date the clearance inspection was conducted
3. Details of the Removal Work
- Type of asbestos-containing material (ACM) removed (e.g., asbestos cement sheeting, vinyl floor tiles, pipe lagging)
- Whether the material was friable or non-friable
- Name and licence number of the licensed removalist who carried out the work
4. Inspection and Air Monitoring Results
- Confirmation that a visual inspection of the work area was completed
- Results of any air monitoring conducted (required for Class A/friable removal; may also be used for non-friable)
- Confirmation that fibre levels are below the clearance level set in the regulations (below the clearance level set in the regulations (confirm the current threshold with WorkSafe NZ or your assessor))
- Details of the air monitoring method used and the laboratory that analysed samples
5. Clearance Declaration
- A clear written statement that the area has been cleared and is safe for re-entry and reoccupation
- The assessor's signature and date
| Element | Required? |
|---|---|
| Assessor name & licence number | Yes |
| Site address & location | Yes |
| Removalist name & licence number | Yes |
| Type of ACM removed | Yes |
| Visual inspection confirmation | Yes |
| Air monitoring results (Class A) | Yes |
| Clearance declaration & signature | Yes |
What Happens If Something Is Missing?
If your certificate is missing any of the above, do not re-enter the area and contact the assessor immediately to request a corrected document. A certificate that lacks the assessor's licence number, air monitoring results (for Class A work), or a signed clearance declaration is not legally valid.
You should also keep the original certificate in a safe place. If you sell your home, this documentation forms part of the property's history and may be requested by buyers or their solicitors.
Friable vs Non-Friable: Does It Change the Certificate?
Yes. Friable asbestos (material that can be crumbled by hand, such as pipe lagging or sprayed coatings) is higher risk and requires a Class A licensed removalist and a Class A assessor. Air monitoring is mandatory for this type of work, and the clearance certificate must include those results.
Non-friable asbestos (such as asbestos cement cladding like James Hardie products from before the mid-1980s) is lower risk but still regulated. A Class B assessor can issue clearance for this work, though air monitoring may still be recommended.
If you are unsure what type of asbestos was present in your home, ask your removalist or assessor to explain before work begins.
When to Call a Professional
Asbestos removal is restricted work in New Zealand. Any removal of more than 10 square metres of non-friable ACM, or any amount of friable ACM, must be carried out by a licensed asbestos removalist. This is a legal requirement under the Health and Safety at Work (Asbestos) Regulations 2016 — it is not optional.
Do not attempt to remove asbestos yourself if the material is friable, if the area is large, or if you are unsure of the material type. The health risks are severe and long-lasting. You can find qualified, licensed asbestos removal specialists in your area on tradedirectory.co.nz.
For guidance on identifying asbestos-containing materials in older NZ homes, BRANZ is an excellent resource.
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