Asbestos Register Requirements: What Must It Contain?
Under Regulation 4 of the Control of Asbestos Regulations 2012, every duty holder for a non-domestic premises must maintain an asbestos register. This guide explains exactly what it must contain, who can produce it, and the most common compliance failures HSE inspectors find.
What Is an Asbestos Register?
An asbestos register is a written record of all asbestos-containing materials (ACMs) identified in a building. It is produced by a competent surveyor as part of a management asbestos survey and forms the factual foundation of the duty holder's asbestos management obligations under Regulation 4 of the Control of Asbestos Regulations 2012 (CAR 2012).
The register is not a standalone document — it is the record component of a broader asbestos management system. Regulation 4 requires the duty holder to assess the condition of ACMs, record the findings, and implement a management plan that specifies what will be done about each material. The register provides the data; the management plan provides the actions.
There is no prescribed format for an asbestos register under CAR 2012. The HSE's guidance document HSG264: Asbestos: The Survey Guide sets out the standard approach used by qualified surveyors. The register can be paper-based or digital, but it must be readily accessible to anyone who needs to work on the premises — a requirement that catches many duty holders who store registers offsite or behind access controls.
Legal BasisThe Regulatory Requirement: CAR 2012 Regulation 4
Regulation 4 of CAR 2012 imposes four core duties on the duty holder for non-domestic premises:
Important: CAR 2012 Regulation 4 applies to non-domestic premises only. A purely domestic dwelling is exempt. However, the common areas of an HMO, a block of flats, or any mixed-use building are non-domestic — the duty applies to those areas. See our Asbestos for Landlords guide for a full breakdown of duty holder types.
What Must an Asbestos Register Contain?
CAR 2012 does not prescribe a specific format, but HSG264 sets out the minimum information a compliant register must contain. The table below distinguishes between elements that are legally required and those that are strongly recommended best practice.
| Register Element | Detail | Status |
|---|---|---|
| Location of each ACM | Room, floor, building zone, or external area. Must be specific enough for a contractor to locate the material without further investigation. | Required |
| Type of ACM | Material category (e.g. asbestos insulating board, asbestos cement, lagging, floor tiles, artex). Where fibre type is known from analysis, this should be recorded. | Required |
| Condition assessment | Assessed using the HSG264 Material Assessment Algorithm: score 0–3 for product type, extent of damage, surface treatment, and fibre release potential. | Required |
| Extent / quantity | Approximate area (m²) or length (m) of the material. Required to assess risk priority and estimate removal costs. | Required |
| Priority assessment score | Combined Material Assessment and Priority Assessment scores from HSG264. Determines management action required. | Required |
| Recommended management action | One of: monitor, repair/encapsulate, or remove. Must be linked to a timescale in the management plan. | Required |
| Date of survey | Date the material was identified and assessed. Required to establish re-inspection intervals. | Required |
| Surveyor details | Name, qualifications (P402 or equivalent), and company. Confirms the survey was conducted by a competent person. | Required |
| Laboratory analysis results | UKAS-accredited laboratory report reference, fibre type confirmed, and sample date. Required where bulk samples were taken. | Best Practice |
| Photographic record | Photographs of each ACM location. Not a legal requirement but strongly recommended by HSE and standard practice under HSG264. | Best Practice |
Who Must Maintain an Asbestos Register?
The duty holder is the person or entity with the greatest degree of control over the premises. In practice, this is usually the freeholder, leaseholder with repair obligations, or managing agent. The table below sets out the register obligation for each common duty holder type.
| Duty Holder Type | Obligation | Register Required? |
|---|---|---|
| Freeholder (non-domestic) | Full Regulation 4 duty. Must commission survey, produce register, and implement management plan. | Required |
| Leaseholder with repair obligations | Duty applies to areas within the lease boundary where the leaseholder has control. | Required for controlled areas |
| Managing agent | Acts on behalf of the duty holder. Must ensure register is produced, maintained, and communicated to contractors. | Required — agent's responsibility |
| Employer (workplace premises) | Employer has duty to manage asbestos in the workplace. Register must be available to all employees and contractors. | Required |
| Domestic landlord (residential only) | CAR 2012 Regulation 4 does not apply to purely domestic premises. However, common areas of HMOs and blocks of flats are non-domestic and the duty applies. | Required for common areas |
| Self-employed sole trader (own premises) | If premises are non-domestic and the trader has control, the duty applies. A sole trader working from a home office in a domestic property is exempt. | Required if non-domestic |
Who Can Produce an Asbestos Register?
The register must be produced by a competent person. Under HSG264, this means a surveyor who holds a P402 qualification (or equivalent) in asbestos surveying and bulk sampling. The laboratory analysing bulk samples must be UKAS-accredited. The duty holder cannot self-certify the register — it must be based on a survey carried out by a qualified person.
Once the initial survey and register are produced, the duty holder is responsible for keeping the register up to date. This means:
- Appending re-inspection records after each periodic re-inspection
- Updating the condition assessment for any ACM whose condition has changed
- Removing or marking ACMs that have been removed or encapsulated
- Adding any newly identified ACMs discovered during maintenance or renovation works
- Ensuring the register reflects the current state of the building at all times
Common Asbestos Register Compliance Failures
HSE inspections consistently identify the same categories of non-compliance. The following failures are the most frequently cited in Improvement Notices and enforcement actions relating to Regulation 4.
Contractors cannot access it before starting work — a Regulation 4(9) breach. HSE can issue an Improvement Notice.
Outdated records mislead future contractors. Duty holder remains liable for any resulting exposure.
Materials that could not be sampled must be presumed to contain asbestos and recorded as such. Omitting them is a compliance gap.
Annual or periodic re-inspections must be recorded in the register. A register with a single survey entry and no re-inspection history suggests the duty is not being managed.
Must be readily accessible to anyone who needs to work on the premises. A digital register locked behind a login that contractors cannot access does not meet Reg 4(9).
The register identifies ACMs; the management plan specifies what to do about them. One without the other is incomplete. Both are required under Regulation 4.
Asbestos Register vs Asbestos Management Plan
These two documents are frequently confused. They are distinct but interdependent — one cannot function without the other.
- Records what ACMs are present
- Produced by a qualified surveyor
- Lists location, type, condition, and extent
- Updated after each re-inspection or change
- Must be kept on the premises
- Sets out what will be done about ACMs
- Produced by the duty holder (with professional input)
- Specifies actions, timescales, and priorities
- Includes re-inspection schedule
- Must be reviewed and updated regularly
Asbestos Register — Frequently Asked Questions
Register at a Glance
- Legal basisCAR 2012 Regulation 4(8)
- Applies toNon-domestic premises
- Who produces itP402-qualified surveyor
- Lab accreditationUKAS-accredited required
- Must be keptOn premises, accessible
- UpdatedAfter each re-inspection or change
- Penalty for non-complianceImprovement Notice / prosecution
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