Do you need an asbestos survey before demolition?

Asbestos is the single biggest health risk in demolishing older UK buildings. Finding it before, not during, demolition is the whole point of a pre-demolition survey. This page explains when a survey is needed and how it fits the regulations.

Why a survey is needed before demolition

Asbestos was used extensively in UK buildings — in insulation, boards, cement products, floor tiles, textured coatings and more — until it was fully banned in 1999. Any building constructed or refurbished before that date may contain asbestos somewhere in its fabric. Demolition disturbs the structure thoroughly, so if asbestos is present and has not been removed first, the work can release fibres that are hazardous when inhaled.

For that reason, you should establish whether asbestos is present before demolition starts, not discover it part-way through. The recognised way to do this is a refurbishment and demolition survey, which is designed specifically for situations where the building is going to be taken apart. The survey output then drives the safe removal of any asbestos found, ahead of the main demolition.

What the survey involves

A refurbishment and demolition asbestos survey is a fully intrusive survey. Because the building is coming down, the surveyor needs access to all areas, including parts that would be disturbed by the work and that a routine management survey would leave alone. In practice this means:

• the survey is destructive where necessary — opening up structures to inspect hidden areas such as voids, ducts and behind panels;
• the area surveyed is normally vacated and isolated for the work, as the intrusive inspection can itself disturb materials;
• samples are taken and analysed by a UKAS-accredited laboratory to confirm whether materials contain asbestos; and
• the result is a report identifying the location, type and condition of any asbestos found.

This is more thorough than a management survey, which is for occupied buildings and aims to keep asbestos safely in place. For demolition, the more invasive refurbishment and demolition survey is the appropriate type because everything is going to be disturbed.

How the survey fits the regulations

The survey is not a stand-alone box-tick — it underpins your duties under the Control of Asbestos Regulations 2012 (CAR 2012). These regulations require those carrying out work that may disturb asbestos to identify it, assess the risk, and manage or remove it safely. The pre-demolition survey is how you obtain the information to do that. Once you have the survey:

• any asbestos is removed before the main demolition, in line with the regulations;
• the work is split into licensed and non-licensed categories depending on the type and condition of the asbestos; and
• removal and disposal are carried out by appropriately competent contractors, with licensed work needing an HSE licence.

Skipping the survey and disturbing asbestos during demolition is both dangerous and unlawful. It can expose workers and the public to fibres, lead to enforcement action by the HSE, and result in costly clean-up. Commissioning the right survey early is the most reliable way to demolish an older building safely and legally.

Where asbestos is commonly found

One reason a survey is essential is that asbestos was used in so many different products that it can turn up almost anywhere in an older building. It is rarely obvious, which is why visual inspection alone is not enough. Materials that have commonly contained asbestos include:

• Insulation and lagging around pipes, boilers and ducts;
• Sprayed coatings used for fire protection and insulation on structural elements;
• Asbestos insulating board (AIB) in ceilings, partitions, panels and soffits;
• Asbestos cement in roof sheets, gutters, downpipes, flues and water tanks;
• Textured decorative coatings on ceilings and walls;
• Floor tiles and the bitumen adhesives beneath them.

Because these materials look much like their non-asbestos equivalents, sampling and laboratory analysis are the only reliable way to confirm what is present. The survey identifies not only where asbestos is, but also its type and condition, which together determine how it must be removed and whether the work is licensed.

The cost of getting it wrong

Treating the survey as an optional expense is a false economy, because the consequences of disturbing undetected asbestos are severe on several fronts:

• Health: asbestos fibres cause serious, often fatal, diseases that can take decades to appear. There is no safe way to expose people to them, and the harm is irreversible.
• Legal: disturbing asbestos without proper identification and control breaches the Control of Asbestos Regulations 2012 and can lead to HSE enforcement and prosecution.
• Financial: an uncontrolled asbestos release can halt a demolition, requiring specialist decontamination and clean-up at far greater cost than a survey would have been.
• Liability: those responsible for the work, including the client, can be held accountable for exposing workers and the public.

Against these risks, commissioning a refurbishment and demolition survey early is a small, sensible step. It gives the demolition team the information they need to remove asbestos safely before the building comes down, and it keeps the project compliant. For any building that may contain asbestos, the survey is the foundation of a safe and lawful demolition, not an extra to be skipped.

How the survey fits the demolition timeline

Because the survey drives what happens next, it needs to come early in the demolition timeline, not as a late check. A sensible sequence runs like this:

• Commission the survey first: a refurbishment and demolition survey is arranged before the demolition is planned in detail, so its findings can shape the method.
• Plan removal from the results: the report determines what asbestos is present, its type and condition, and therefore whether removal is licensed or non-licensed.
• Remove before the main demolition: any asbestos is taken out under controlled conditions before the building itself is demolished.
• Coordinate with the other steps: the survey runs alongside serving the Section 80 notice, arranging utility disconnections and planning the work under CDM 2015.

Leaving the survey until late, or skipping it, is what causes asbestos to be discovered mid-demolition — at which point work has to stop, the area may be contaminated, and the cost and delay rise sharply. Treating the survey as the first step for any older building keeps the project ordered and safe.

Surveys, competence and reliability

For the survey to do its job, it has to be reliable, which depends on competence and proper analysis:

• Competent surveyor: the survey should be carried out by someone competent in asbestos surveying, working to recognised standards, because the results drive safety-critical decisions.
• UKAS-accredited analysis: samples taken during the survey must be analysed by a UKAS-accredited laboratory, so the identification of asbestos is dependable.
• Full scope: the survey must cover all the areas the demolition will disturb, with safe access arranged, so that hidden asbestos is not missed.
• Clear report: the output should clearly record the location, type and condition of any asbestos found, in a form the demolition team can act on.

A poorly scoped or unreliable survey is worse than useless, because it can give false confidence that a building is clear when it is not. That is why competence and accreditation matter so much. For any building that may contain asbestos — which means most built or refurbished before the 1999 ban — a properly conducted refurbishment and demolition survey is the dependable starting point for a safe, lawful demolition. It protects the workers and the public, satisfies the duties under the Control of Asbestos Regulations 2012, and keeps the whole project on a sound footing.

Frequently asked questions

Sources & further reading

• HSE — asbestos surveys
• HSE — Control of Asbestos Regulations 2012

Figures on this page are typical UK ranges drawn from published sources and depend on your specific building. They are guidance, not a quotation.