Keeping you in the know

We often see builders and developers surprised to learn that complex construction projects are currently underinsured by an average of 20% to 40%, according to 2026 data from Miller & Partner. It's a worrying figure, especially when you consider that tool and equipment theft alone costs the UK industry up to £1 billion annually. Having contractors all risks insurance explained shouldn't feel like a chore, yet many professionals find themselves caught between confusing JCT contract requirements and the fear of leaving high-value machinery unprotected.

We understand that you'd rather focus on the build than deciphering insurance jargon. You likely already feel that your existing Public Liability policy covers the essentials, but there's a significant difference between third-party injury claims and protecting the physical works on your site. We've put together this concise guide to give you a clear understanding of what a Contractors All Risks (CAR) policy actually does for your business.

By the end of this article, you'll feel confident choosing between annual or project-specific cover and ensure you're fully compliant with your latest contract. We'll break down the core components of CAR insurance, including how it bridges the gap between liability and asset protection to keep your projects moving forward.

What is Contractors All Risks Insurance (CAR)?

Contractors All Risks (CAR) insurance is a specialized policy designed to protect the physical assets of a construction project from the ground up. It provides cover for the works in progress, whether those are permanent structures or temporary site offices. In the industry, this is also frequently referred to as Builder's risk insurance. Having contractors all risks insurance explained simply means understanding that it's a financial safety net for the bricks, mortar, and machinery that make your project possible.

The "All Risks" part of the name is a technical distinction that carries significant weight. Most standard insurance policies only cover "named perils" such as fire or lightning. CAR insurance flips this logic. It covers every type of physical loss or damage except for a specific, documented list of exclusions. If a flood ruins your foundations or a sudden storm destroys your scaffolding, the policy is designed to step in. It provides a steady hand when the unpredictable happens on site.

To better understand this concept, watch this helpful video:

A well-structured policy typically covers the employer, the main contractor, and all subcontractors under one umbrella. This joined-up approach is essential for maintaining harmony on a busy site. It ensures that if damage occurs, the focus remains on getting the project back on track rather than arguing over whose individual insurance should pay for the loss.

CAR vs Public Liability: Clearing the Confusion

We often speak with clients who believe their Public Liability policy is sufficient for all site risks. It isn't. Public Liability covers your legal responsibility if you injure a third party or damage their property. It does not cover the building you are actually paid to construct. If a fire guts your site mid-build, Public Liability won't pay for the materials or labor to start again. You need both policies to maintain a truly protected and compliant construction site.

The Legal and Contractual Context

In the UK, CAR insurance is rarely optional. Standard contracts like the JCT (Joint Contracts Tribunal) or NEC (New Engineering Contract) usually mandate this cover to protect all parties. You'll often find it required under specific "Insurance Options" within the contract terms. Failing to keep this cover in place is usually a material breach of contract. This can lead to project suspension or even the termination of your agreement. It's a contractual cornerstone that keeps the financial interests of everyone involved secure.

Core Coverage: What Does a CAR Policy Actually Protect?

A CAR policy acts as a comprehensive shield for the physical assets on your site. The most significant component is the Contract Works. This protects the structure you're building and the temporary works like scaffolding or shoring. It also covers the materials waiting to be installed. Beyond the bricks and mortar, the policy extends to the muscle of your operation: the plant and machinery. Whether you own your excavators or rely on hired-in cranes, this cover is vital. It even encompasses temporary buildings such as site offices, storage containers, and canteens. These structures often house expensive IT equipment or project plans that are essential for daily operations.

With tool and equipment theft costing the UK construction industry between £800 million and £1 billion annually according to 2026 figures, having Contractors' all-risk insurance explained in detail helps you understand that even your workforce's personal hand tools can be brought under this protective wing. We prioritize these details because we know that a single theft shouldn't derail your entire project's progress. Our approach ensures that every piece of kit, from a small drill to a massive piling rig, has the right level of security behind it.

Materials in Transit and Off-Site Storage

Materials don't just appear on site; they often sit in warehouses or travel across the country first. Standard policies can be narrow, but we often recommend extending cover to include these logistical vulnerabilities. Consider the "Cessation of Works" clause carefully. If a project stalls for a significant period, your insurer might restrict cover. We help you manage these pauses so your protection doesn't vanish just because the site is quiet. If you're unsure about your specific site risks, our team at Paterson Insurance Brokers can provide a tailored review of your current arrangements.

Common Exclusions to Be Aware Of

While "All Risks" sounds absolute, it doesn't cover everything. Gradual deterioration, rust, or standard wear and tear are excluded. These are considered maintenance issues rather than accidental losses. Crucially, damage caused by defective design or poor workmanship is typically left out. This is where Professional Indemnity insurance becomes necessary to fill the gap. Finally, keep an eye on theft requirements. Most insurers won't pay for "mysterious disappearances" or internal theft unless there's clear evidence of forced entry into a secure area. We often advise clients to document their security measures to ensure claim validity. Understanding these limits is why having contractors all risks insurance explained by an expert is so valuable for your long term peace of mind.

Annual vs Project-Specific CAR Insurance

Choosing the right structure for your policy is just as vital as the level of cover itself. For many established firms, an annual policy provides the most administrative ease. It covers all projects undertaken within a twelve-month period, provided they fall within pre-agreed turnover and contract limits. This approach removes the need to notify us every time you start a new site, allowing you to focus on the build while we keep the protection running in the background. It's a steady, efficient way to manage a high volume of smaller or medium-sized works.

Project-specific policies are better suited for high-value developments or one-off builds with unique risk profiles. These policies are tailored to the exact duration of the contract, often including specific maintenance periods that continue after the keys are handed over. Because these policies are ring-fenced, they aren't affected by claims made on your other sites. Having contractors all risks insurance explained in this way helps you see that while annual cover offers convenience, project-specific cover offers precision for complex, high-stakes ventures. To see how this fits into the wider landscape of types of construction insurance, it's helpful to consider your business's growth trajectory and project pipeline.

Determining the Sums Insured

Getting the numbers right is where many contractors face their biggest risk. You must calculate the sum insured based on the full reinstatement value of the project, not just the contract price. This figure needs to include professional fees for architects and surveyors, as well as the significant costs associated with debris removal after a loss. 2026 data indicates that complex construction projects are underinsured by an average of 20% to 40%. If you understate these values, you trigger the "Average" clause. This allows the insurer to reduce your claim payout by the same percentage you are underinsured, which can leave a devastating hole in your project's finances even for relatively small claims.

Advanced Loss of Profits (ALOP)

For developers and owners, the physical damage to a building is only half the story. If a fire or flood delays the completion date, the resulting loss of rental income or sales revenue can be crippling. Advanced Loss of Profits (ALOP) cover provides a financial bridge, protecting the anticipated income that vanishes during a delay. This is a specialized area where our role as a Business Risk Management Consultancy West Yorkshire becomes essential. We work with you to analyze these time-sensitive risks, ensuring that your insurance program protects both your physical assets and your future balance sheet.

Navigating Contractual Requirements: JCT and "Joint Names"

Understanding the technicalities of "Joint Names" is perhaps the most critical step in having contractors all risks insurance explained correctly. When a policy is issued in joint names, both the employer and the contractor are recognized as the insured party. This arrangement is not just a formality; it serves a vital legal purpose. It prevents the insurance company from exercising what is known as subrogation rights. In simpler terms, if a fire occurs on site due to a contractor's accidental negligence, the insurer cannot pay the employer for the loss and then turn around to sue the contractor to recover that money. Both parties are on the same side of the protective shield.

We also need to look closely at how your subcontractors fit into this framework. Labour-only subcontractors are generally treated as your own employees and are covered under your primary policy. However, "bona-fide" subcontractors, who provide their own materials and carry their own insurance, require a different approach. You must verify that their cover is adequate and hasn't lapsed. If their insurance fails, the financial burden often rolls back to the main contractor. Managing these layers of responsibility is part of the steady, methodical approach we take to keep your projects secure.

JCT Insurance Options Explained

The Joint Contracts Tribunal (JCT) provides three distinct insurance options, and choosing the wrong one can lead to an immediate breach of contract. Option A is for new builds where the contractor is responsible for arranging the CAR insurance. Option B also covers new builds, but the responsibility shifts to the employer. Option C is specifically for work on existing structures, such as renovations or extensions. In this scenario, the employer usually takes out the policy to cover both the existing building and the new works. Misunderstanding these clauses is a common pitfall that can leave significant assets unprotected.

NEC and FIDIC Considerations

While JCT remains popular, many modern projects now utilize NEC4 or FIDIC contracts. NEC4 approaches risk allocation with a different rhythm, often placing a heavier emphasis on the "Insurance Table" found within the contract data. This table dictates the specific limits and types of cover required for the project. Because these requirements change from one site to the next, generic policies rarely suffice. As Construction Insurance Specialists UK, we recommend a thorough review of every contract before work begins to ensure your cover matches your legal obligations exactly.

If you're currently reviewing a new contract and need to ensure your "Joint Names" provisions are watertight, our team is here to help. You can contact our expert advisors for a clear, objective review of your contractual insurance requirements.

Why Consult an Independent Broker for CAR Insurance?

Generic online platforms often promise speed, but they rarely offer the depth required for complex site risks. When you have contractors all risks insurance explained by an independent specialist, you quickly realize that the value lies in the details. A standard algorithm won't spot a missing "Joint Names" provision or an inadequate ALOP indemnity period. We focus on bespoke policy structuring because we know that an off-the-shelf product often fails exactly when you need it most. It's about ensuring your financial protection is as solid as the foundations you're pouring.

Our independence is our greatest asset to you. Because we aren't tied to a single insurer, we act as your objective advocate in the market. This autonomy means we're positioned firmly on your side, fostering a long-term partnership based on trust rather than a simple transaction. If you need to make a claim, we step in as your representative. We handle the intricate negotiations with loss adjusters to ensure you receive a fair and prompt settlement, allowing you to keep your focus on the project at hand. We see ourselves as a steady hand, navigating the intricate risks of the construction sector on your behalf.

The Paterson Insurance Brokers Approach

With over 25 years of experience in construction risk, we've seen how the industry has evolved. We pride ourselves on being a knowledgeable regional advisor, offering a personal, advice-led service that skips the frustration of call centres. We don't just sell policies; we provide a specialized craft in risk management. Before you break ground, we'll verify that your cover is fully compliant with JCT or NEC4 requirements. This thoroughness is a hallmark of our process, ensuring that every detail is right from the start. We prioritize comprehensive protection over the cheapest premium because we know the true cost of a poorly structured policy.

Next Steps for Your Project

Protecting your project begins with a clear understanding of your obligations. We suggest you start by reviewing your current building contract to identify the specific insurance clauses mandated by your employer. Once you have your project details ready, including the site location, total contract value, and the estimated build duration, we can begin structuring your protection. This methodical pace ensures that no logistical vulnerability is overlooked.

Every project has its own rhythm and risks. We invite you to Contact Paterson Insurance Brokers today for a professional CAR insurance consultation. We'll take the time to listen to your specific circumstances and provide the expert, community-focused guidance you need to build with confidence.

Building Your Future on a Secure Foundation

Protecting your construction assets requires more than a standard policy; it demands a strategy that accounts for the unique pressures of the UK building sector. We've seen how having contractors all risks insurance explained correctly can be the difference between a project that recovers from a setback and one that stalls indefinitely. By identifying the right balance between annual and project-specific cover, and ensuring your "Joint Names" provisions meet strict JCT or NEC standards, you're doing more than ticking a box. You're building genuine resilience into your business model.

With over 25 years of construction expertise, we're here to act as your independent advisor and steady hand. We focus on full contract compliance and objective market navigation so you don't have to worry about the fine print. Secure your project with a bespoke Contractors All Risks consultation to ensure your next development is backed by the integrity and depth it deserves. We look forward to helping you navigate your risks with confidence and clarity.

Frequently Asked Questions

Is Contractors All Risks insurance a legal requirement in the UK?

Contractors All Risks insurance is not a statutory legal requirement in the UK, unlike Employers' Liability insurance. However, it's almost always a mandatory obligation under standard construction contracts like JCT or NEC. If you fail to maintain this cover, you're likely in breach of your contract. This can lead to project suspension or financial penalties, making it a practical necessity for most firms.

Does CAR insurance cover my existing building during a renovation?

Standard CAR policies typically only cover the new works and materials, not the original structure itself. If you're working on an existing property, you'll usually need a JCT Option C arrangement where the employer arranges cover for both the existing building and the new project. We can help you structure these complex extensions to ensure there's no gap in protection between the old and the new.

What is the difference between CAR and Contract Works insurance?

Contract Works is a specific component of a broader Contractors All Risks policy. While Contract Works focuses purely on the physical structure and materials, a full CAR policy often bundles this with cover for owned or hired-in plant, employee tools, and site huts. Having contractors all risks insurance explained this way helps you see it as a comprehensive package rather than a single type of cover.

How much does Contractors All Risks insurance cost?

The cost of a policy varies significantly based on the project's total value, duration, and the specific risks involved on site. Factors such as the use of hazardous materials or the location's security also influence the premium. While annual cover for small trades starts at a lower entry point, complex commercial projects require bespoke pricing. We focus on finding the most dependable protection rather than the lowest price.

Are subcontractors covered under my CAR policy?

Labour-only subcontractors are generally covered as they're treated similarly to your own employees. Bona-fide subcontractors usually need their own insurance, though they can sometimes be named on your policy if the contract requires it. It's vital to verify their certificates regularly. We can provide a steady hand in reviewing these documents to ensure your project remains fully compliant and protected.

Can I take out a CAR policy for a single project?

Yes, project-specific policies are designed for one-off developments and match the exact duration of the build. These are particularly useful for high-value projects or when you need to ring-fence the risk from your other business activities. They often include a maintenance period after completion, providing a sense of security during the handover phase. This flexibility allows you to tailor protection to each site's unique needs.

What happens if I underinsure my project?

If your sum insured is lower than the full reinstatement value, insurers will apply the "Average" clause to any claim. This means they'll reduce your payout by the same percentage you are underinsured. For example, if you're covered for only 80% of the true cost, you'll only receive 80% of your claim value. This gap can cause significant financial strain, especially on high-value machinery or materials.

Does CAR insurance cover professional fees and debris removal?

A well-structured policy will cover professional fees for architects and surveyors, along with the costs for debris removal, provided these are included in your initial sum insured. These costs can be substantial following a major loss like a fire or flood. We ensure these elements are factored into your contractors all risks insurance explained during our consultation to prevent any unexpected shortfalls during a claim.