Excepted risk
Insurance provides third-party protection against risks. Risks on construction projects can be significant, and so insurance is very common, providing protection both for the insured, and for the party to whom the insured has a liability.
Many standard forms of construction contract include a requirement for insurance to be taken out by the parties to the contract. Policies may be taken out by the contractor or by the client depending on the form of contract and the options selected, but they will generally be in the form of a ‘joint names policy’ in the names of both the contractor and the client. This gives both parties their own rights to claim against the insurer. Other parties, such as funders may also be added as a joint name.
Insurance policies may cover all risks, or may be restricted to certain ‘specified perils.’ However, in either case, there may be ‘excepted risks’, for which insurance is not required (because it will usually be unobtainable).
Excepted risks might include:
- The use or occupation of the works by the employer, its agents, servants or contractors.
- Any fault, defect, error or omission in the design of the works (other than design provided by the contractor).
- Riot, war, invasion, act of foreign enemies or hostilities.
- Civil war, rebellion, revolution, insurrection or military or usurped power (not including terrorism).
- Radiation or contamination by radioactivity.
- Pressure waves caused by aircraft or other aerial devices travelling at sonic or supersonic speeds.
The cost of rectifying damage caused by such risks is generally borne by the employer, although there is usually provision for the apportionment of rectification costs where the cause is contributed to by both an excepted risk and one for which the contractor is responsible.
[edit] Related articles on Designing Buildings Wiki:
- Alternative Dispute Resolution legislation.
- Compensation event.
- Contract conditions.
- Cost reimbursable contract.
- Defect.
- Insurance.
- Joint names policy.
- Misrepresentation and insurance.
- Specified perils in construction contracts.
[edit] External references
- ‘Construction Insurance and UK Construction Contracts’ (2nd ed.), LEVINE, M., TER HAAR, R., Informa Law (2008)
Featured articles and news
The roofscape of Hampstead Garden Suburb
Residents, architects and roofers need to understand detailing.
Homes, landlords. tenants and the new housing standards
What will it all mean?
The Architectural Technology podcast: Where it's AT
Catch-up on the latest episodes.
Edmundson Apprentice of the Year award 2026
Entries now open for this Electrical Contractors' Association award.
Traditional blue-grey slate from one of the oldest and largest UK slate quarries down in Cornwall.
There are plenty of sources with the potential to be redeveloped.
Change of use legislation breaths new life into buildings
A run down on Class MA of the General Permitted Development Order.
Solar generation in the historic environment
Success requires understanding each site in detail.
Level 6 Design, Construction and Management BSc
CIOB launches first-ever degree programme to develop the next generation of construction leaders.
Open for business as of April, with its 2026 prospectus and new pipeline of housing schemes.
The operational value of workforce health
Keeping projects moving. Incorporating unplanned absence and the importance of health, in operations.
A carbon case for indigenous slate
UK slate can offer clear embodied carbon advantages.
Costs and insolvencies mount for SMEs, despite growth
Construction sector under insolvency and wage bill pressure in part linked to National Insurance, says report.
The place for vitrified clay pipes in modern infrastructure
Why vitrified clay pipes are reclaiming their role in built projects.
Research by construction PR consultancy LMC published.
Roles and responsibilities of domestic clients
ACA Safety in Construction guide for domestic clients.





















