Construction site
A construction site is an area or piece of land on which construction works are being carried out.
The term ‘building site’ is often used interchangeably with construction site, although this tends to indicate that buildings (and sometimes, more specifically, housing) are being constructed, whereas the term ‘construction site’ can refer to all types of works, such as road construction, sewer construction, landscaping, and so on.
The CDM Regulations suggest that a construction site: '...includes any place where construction work is being carried out or to which the workers have access, but does not include a workplace within the site which is set aside for purposes other than construction work.'
Typically, land will become a construction site when it is handed over to a contractor to begin the construction works. Regulation 6 of the CDM regulations requires that notice is given to the Health and Safety Executive (HSE) as soon as is practicable before the construction phase begins. On projects involving more than one contractor, the CDM regulations also require that the client appoints a principal contractor to co-ordinate the construction phase.
In the first phase of the works, construction may be restricted to preliminary activities such as; securing the site, site clearance, setting up site facilities, demolition, groundworks, and so on. It is often apparent that a site has become a construction site when hoarding is erected to secure its perimeter.
It is relatively common for sites to remain in this 'prepared' condition for some time with little evidence of further construction works being undertaken. This may be due to complexities in securing all the land required, obtaining permissions, securing all the funding required, complex ground works, ongoing design, and so on. This can leave developers open to accusations of landbanking.
Once above ground works begin, construction sites may appear to progress relatively quickly as structural frames grow and cladding is installed. They may then appear to slow again as internal fit outs are undertaken and finishing work is carried out.
Typically, a construction site will revert to being a non-construction site when it is handed back to the client on certification of practical completion. However, there may be ongoing minor works required to rectify any defects that become apparent.
NB The Scottish Building Standards, Part I. Technical Handbook – Domestic, Appendix A Defined Terms, defines site in relation to a building as: ‘…the area of ground covered or to be covered by the building, including its foundations.’
On Designing Buildings Wiki, there is a range of useful information relating to construction sites, including:
- Access to construction sites.
- CDM.
- Complaining about construction sites.
- Condition survey.
- Development footprint.
- Ground conditions.
- Handover construction site to the client.
- Handover to the contractor.
- Hoardings.
- How to work safely on a construction site in the dark.
- How to work safely on a construction site in winter.
- Injuries on construction sites.
- Landbanking.
- Lighting of construction sites.
- Logistics.
- Mobilisation.
- Notifiable project F10 form.
- On site.
- Possession.
- Perimeter security.
- Plot.
- Reporting accidents and injuries on construction sites.
- Site appraisals.
- Site area.
- Site facilities.
- Site induction.
- Site layout plan.
- Site office.
- Site plan.
- Site safety.
- Site storage.
- Site survey.
- Temporary site services.
Featured articles and news
Futurebuild and UK Construction Week London Unite
Creating the UK’s Built Environment Super Event and over 25 other key partnerships.
Welsh and Scottish 2026 elections
Manifestos for the built environment for upcoming same May day elections.
Advancing BIM education with a competency framework
“We don’t need people who can just draw in 3D. We need people who can think in data.”
Guidance notes to prepare for April ERA changes
From the Electrical Contractors' Association Employee Relations team.
Significant changes to be seen from the new ERA in 2026 and 2027, starting on 6 April 2026.
First aid in the modern workplace with St John Ambulance.
Ireland's National Residential Retrofit Plan
Staged initiatives introduced step by step.
Solar panels, pitched roofs and risk of fire spread
60% increase in solar panel fires prompts tests and installation warnings.
Modernising heat networks with Heat interface unit
Why HIUs hold the key to efficiency upgrades.
Reflecting on the work of the CIOB Academy
Looking back on 2025 and where it's going next.
Procurement in construction: Knowledge hub
Brief, overview, key articles and over 1000 more covering procurement.
Sir John Betjeman’s love of Victorian church architecture.
Exchange for Change for UK deposit return scheme
The UK Deposit Management Organisation established to deliver Deposit Return Scheme unveils trading name.
A guide to integrating heat pumps
As the Future Homes Standard approaches Future Homes Hub publishes hints and tips for Architects and Architectural Technologists.
BSR as a standalone body; statements, key roles, context
Statements from key figures in key and changing roles.
Resident engagement as the key to successful retrofits
Retrofit is about people, not just buildings, from early starts to beyond handover.
























Comments