Construction operations definition
Contents |
[edit] Introduction
In its widest sense, the term 'construction operations' might refer to any activity that contributes to the delivery of a construction project.
However, the term is defined more precisely by the Housing Grants, Construction and Regeneration Act 1996 (HGCRA, also known as the Construction Act). Whether works set out in a contract are considered to be construction operations for the purposes of the Act affect the parties' obligations and rights.
The Act suggests that 'construction operations' include a very wide range of construction and engineering operations. However, activities such as mining, nuclear and power generation are expressly excluded, as are contracts with residential occupiers. Section 105 of the Act sets out the precise definition.
[edit] Part 1
Part 1 defines 'construction operations' as:
[edit] Section A
'Construction, alteration, repair, maintenance, extension, demolition or dismantling of buildings, or structures forming, or to form, part of the land (whether permanent or not).'
[edit] Section B
'Construction, alteration, repair, maintenance, extension, demolition or dismantling of any works forming, or to form, part of the land, including (without prejudice to the foregoing):
- Walls.
- Roadworks.
- Power-lines.
- Telecommunication apparatus.
- Aircraft runways.
- Docks and harbours.
- Railways.
- Inland waterways.
- Pipe-lines, reservoirs, water-mains, wells, sewers.
- Industrial plant and installations for purposes of land drainage, coast protection or defence.'
[edit] Section C
'Installation in any building or structure of fittings forming part of the land, including (without prejudice to the foregoing), systems of:
- Heating.
- Lighting.
- Air-conditioning.
- Ventilation.
- Power supply.
- Drainage.
- Sanitation.
- Water supply or fire protection.
- Security or communications systems.'
[edit] Section D
'External or internal cleaning of buildings and structures, so far as carried out in the course of their construction, alteration, repair, extension or restoration.'
[edit] Section E
'Operations which form an integral part of, or are preparatory to, or are for rendering complete, such operations as are previously described in this subsection, including:
- Site clearance.
- Earth-moving.
- Excavation.
- Tunnelling and boring.
- Laying of foundations.
- Erection, maintenance or dismantling of scaffolding.
- Site restoration.
- Landscaping.
- Provision of roadways and other access works.'
[edit] Section F
'Painting or decorating the internal or external surfaces of any building or structure.'
[edit] Part 2
Part 2 defines activities that are not considered to be 'construction operations':
[edit] Section A
'Drilling for, or extraction of, oil or natural gas.'
[edit] Section B
'Extraction (whether by underground or surface working) of minerals; tunnelling or boring, or construction of underground works, for this purpose.'
[edit] Section C
'Assembly, installation or demolition of plant or machinery, or erection or demolition of steelwork for the purposes of supporting or providing access to plant or machinery, on a site where the primary activity is:
- Nuclear processing, power generation, or water or effluent treatment.
- The production, transmission, processing or bulk storage (other than warehousing) of chemicals, pharmaceuticals, oil, gas, steel or food and drink.'
[edit] Section D
'Manufacture or delivery to site of:
- Building or engineering components or equipment.
- Materials, plant or machinery.
- Components for systems of heating, lighting, air-conditioning, ventilation, power supply, drainage, sanitation, water supply or fire protection, or for security or communications systems.'
There is an exception to the above which is when they are 'under a contract which also provides for their installation.'
[edit] Section E
'The making, installation and repair of artistic works, being sculptures, murals and other works which are wholly artistic in nature.'
More information is provided in Appendix A of Construction Industry Scheme: a guide for contractors and subcontractors (CIS 340).
[edit] Related articles on Designing Buildings
- Adjudication.
- Causes of construction disputes.
- Commencement.
- Construction contract.
- Construction supply chain payment charter.
- Function.
- Housing Grants, Construction and Regeneration Act HGRA.
- Industrial plant and construction operations.
- Roadworks.
- Scheme for Construction Contracts.
[edit] External references
Featured articles and news
We're expanding our collaborative mission by launching DB Intelligence, an exclusive market research advisory panel. Built environment professionals can now get paid to share their expertise on industry trends, products and services.
Panel members receive direct financial incentives for participating in research projects like short surveys, 1-2-1 interviews and focus groups. Register today to shape the future of the construction sector.
Planning condition discharge in England and Wales
A brief exoplanation from a building compliance expert, with further links.
Overheating guidance and tools for building designers
Guidance for dealing with element of building fabric control that have increasing importance.
Shading for housing, a design guide
From the Good Homes Alliance and British Blind and Shutter Association.
UK Standard Skills Classification (SSC)
A shared framework for describing skills needs.
Social media ban consultation comes to close
CIOB urges UK Government to consider social media’s role in careers guidance in ban debate.
The latest of eight Skills England apprenticeship units
The addition of battery manufacturing welcomed by ECA with a warning about the risks of fast-tracked apprenticeship units.
Building Control Independent Panel final report
A precis of a key report led by Dame Hackitt with full recommendations and link to the government response.
Building Safety recap April, 2026
A short and longer run-through of the month, with links to further information and sources.
CIAT May 2026 briefing.
From medieval scribes to modern word art.
ECA welcomes crackdown on late payment and push for clean energy, whilst CIOB seek fixed cladding removal timeframes.
Cyber Security in the Built Environment
Protecting projects, data, and digital assets: A CIOB Academy TIS.
Managing competence in the built environment
ITFG publishes new industry guide on how to meet the ICC principles.
The UK's campaign to reduce noise pollution: Mythbusting, articles and topic guides.




















