Preventing unauthorised access to construction sites
The Health and Safety at Work etc Act 1974 requires that employers take reasonable steps to ensure the health and safety of persons other than their employees, which implies a duty to ensure people are safe from activities on construction sites.
In addition, the Construction (Design and Management) Regulations (the CDM Regulations) require the prevention of access to construction sites by unauthorised persons, and that ‘… where necessary in the interests of health and safety, a construction site must, so far as is reasonably practicable, and in accordance with the level of risk posed, comply with either or both of the following; have its perimeter identified by suitable signs and be arranged so that its extent is readily identifiable; or be fenced off.'
The principal contractor must take necessary steps to prevent access by unauthorised persons to the construction site and contractors must not begin work on a construction site unless reasonable steps have been taken to prevent access by unauthorised persons to that site.
Principal contractors should liaise with contractors to define the site boundaries using suitable barriers and take steps to ensure that only those authorised to access the site do so. For projects involving only one contractor, the contractor must do whatever is proportionate to prevent unauthorised access before starting work on the site.
Special consideration will be required for sites that have:
- Rights of way through them.
- Other work areas next to them.
- Occupied houses next to them.
- Children or vulnerable people nearby.
There may also be may be planning conditions attached to a planning permission setting out specific obligations in relation to the site perimeter.
[edit] Related articles on Designing Buildings
Featured articles and news
The 5 elements of seiri, seiton, seiso, seiketsu and shitsuke.
Shading for housing, a design guide
A look back at embedding a new culture of shading.
The Architectural Technology Awards
The AT Awards 2025 are open for entries!
ECA Blueprint for Electrification
The 'mosaic of interconnected challenges' and how to deliver the UK’s Transition to Clean Power.
Grenfell Tower Principal Contractor Award notice
Tower repair and maintenance contractor announced as demolition contractor.
Passivhaus social homes benefit from heat pump service
Sixteen new homes designed and built to achieve Passivhaus constructed in Dumfries & Galloway.
CABE Publishes Results of 2025 Building Control Survey
Concern over lack of understanding of how roles have changed since the introduction of the BSA 2022.
British Architectural Sculpture 1851-1951
A rich heritage of decorative and figurative sculpture. Book review.
A programme to tackle the lack of diversity.
Independent Building Control review panel
Five members of the newly established, Grenfell Tower Inquiry recommended, panel appointed.
Welsh Recharging Electrical Skills Charter progresses
ECA progressing on the ‘asks’ of the Recharging Electrical Skills Charter at the Senedd in Wales.
A brief history from 1890s to 2020s.
CIOB and CORBON combine forces
To elevate professional standards in Nigeria’s construction industry.
Amendment to the GB Energy Bill welcomed by ECA
Move prevents nationally-owned energy company from investing in solar panels produced by modern slavery.
Gregor Harvie argues that AI is state-sanctioned theft of IP.
Experimental AI housing target help for councils
Experimental AI could help councils meet housing targets by digitising records.
BSRIA Occupant Wellbeing survey BOW
Occupant satisfaction and wellbeing tool inc. physical environment, indoor facilities, functionality and accessibility.