One of the most common misunderstandings in construction insurance is whether construction all risk insurance covers faulty workmanship or design errors. Contractors and developers often assume they are fully protected, only to discover limitations when a claim arises. Understanding the scope of construction all risk insurance coverage is critical to avoiding uninsured losses.
Construction All Risk Insurance Coverage Explained
Construction all risk insurance provides cover for physical loss or damage to works in progress during the construction period. It is commonly known as contractors all risk insurance or a CAR insurance policy. This type of construction insurance is designed to protect projects against unforeseen events such as fire, flood, storm damage, theft or accidental damage to insured works.
While construction all risk insurance coverage is broad, it operates within defined limits. It is intended to respond to sudden and unforeseen physical damage, not to guarantee the quality of workmanship or the accuracy of design. Exclusions in construction insurance play a central role in defining what the policy does and does not insure.
Does Construction All Risk Insurance Cover Faulty Workmanship?
Faulty workmanship is one of the most disputed areas of construction all risk insurance coverage. The answer depends heavily on policy wording.
The Cost of Rectifying Defective Work
Most construction all risk insurance policies exclude the cost of repairing or replacing defective workmanship itself. If a contractor installs cladding incorrectly, pours defective concrete or fits structural elements improperly, the cost of correcting that specific defective work is usually not covered.
This exclusion exists because workmanship quality is considered a performance risk rather than an unforeseen external event. Construction insurance is not designed to guarantee that work is carried out correctly.
Resulting Damage vs The Defect Itself
A crucial distinction must be made between the defective element and the damage it causes. In many CAR insurance policy wordings, while the defective work itself is excluded, damage resulting from that defect to other insured parts of the works may be covered.
For example, if defective pipe installation causes a major water escape that damages completed structural elements, the resulting damage may fall within construction all risk insurance coverage, even though the cost of replacing the faulty pipe itself is excluded. The precise position varies between insurers, making careful review of exclusions in construction insurance essential.
Does Construction All Risk Insurance Cover Design Defects?
Design defects are a separate and often more complex issue within construction project insurance.
Standard Policy Position
Under a standard construction all risk insurance policy, design defects are typically excluded. If a structural engineer’s calculations are incorrect and this leads to failure, the cost of remedying that design flaw would not usually be covered under construction risk insurance.
Where contractors assume design responsibility, these risks are generally addressed through professional indemnity insurance rather than contractors all risk insurance. Assuming that a CAR insurance policy automatically includes design defect insurance is a common and costly mistake.
Design and Build Contracts
In design and build contracts, the contractor may carry full responsibility for both design and construction. This creates a higher risk profile and increases the importance of aligning construction insurance with professional indemnity cover.
If design liability is not properly insured, significant gaps can arise. Construction all risk insurance coverage alone will not typically respond to pure design negligence claims, even where physical damage results from that design error.
Why These Exclusions Exist
Construction insurance is intended to insure fortuitous events, not inherent defects. Insurers price construction all risk insurance based on exposure to accidental damage, not guaranteed performance outcomes.
Including full protection for faulty workmanship or design defects would fundamentally alter underwriting assumptions and increase premiums significantly. These exclusions reflect the principle that quality control and professional competence are managed through contracts, supervision and separate insurance policies, not through a general CAR insurance policy.
When Might Limited Cover Apply?
Some policies include limited defect clauses or extensions that provide restricted protection for certain defects. These may offer cover for resulting damage, or in some cases limited protection for specific elements, subject to sub-limits and strict conditions.
However, these extensions vary significantly between insurers. Developers and contractors should not assume that construction all risk insurance coverage automatically includes defective workmanship insurance or design defect insurance. Detailed review of policy wording is vital before relying on cover.
The Role of Professional Indemnity Insurance
Professional indemnity insurance is specifically designed to cover financial losses arising from negligent design, advice, specification errors or professional services. This type of policy sits alongside construction all risk insurance rather than forming part of it.
Where contractors undertake design responsibility, adequate professional indemnity limits must be in place. Construction project insurance arrangements should be coordinated carefully to ensure that physical damage risks and professional negligence risks are both properly addressed.
Without this coordination, a project may be left exposed. Construction all risk insurance protects against physical damage to the works, while professional indemnity insurance protects against design liability. Both are often required on modern projects.
Common Misunderstandings and Costly Assumptions
Many disputes arise because contractors believe construction all risk insurance provides defective workmanship insurance as standard. This assumption often develops during tender stage discussions, where insurance is treated as a tick box requirement rather than a carefully structured risk solution.
In reality, exclusions in construction insurance are detailed and technical. Failure to review these exclusions properly can result in significant uninsured losses. For example, if a structural failure stems directly from a design error and no professional indemnity cover is in place, the financial consequences can be severe.
Early review of policy terms, allocation of design responsibility and contractual risk transfer is crucial. Construction risk insurance should be aligned with the procurement route, whether traditional, design and build, or management contracting.
Aligning Insurance with Construction Risk
Construction all risk insurance provides valuable protection against accidental physical loss or damage during the build phase. However, it does not automatically cover faulty workmanship or design defects. Understanding the limits of construction all risk insurance coverage is important for managing project risk effectively.
Contractors and developers should review policy wording carefully, clarify the treatment of defective work and resulting damage and ensure that professional indemnity arrangements are in place where design responsibility exists. Proper alignment between construction insurance and project risk allocation helps prevent costly gaps in protection.
Get in touch with Buildsafe to ensure your construction all risk insurance is aligned with the real risks of your development.
