The question of whether does contractors all risk insurance cover defective workmanship catches many general contractors off guard. The short answer is no, with important nuances. Contractors All Risk (CAR) policies typically exclude the cost of redoing defective work itself. But they often cover the resulting damage that defective workmanship causes to other parts of the project. According to a 2024 International Risk Management Institute analysis, 68% of CAR claims involving defective workmanship disputes center on this exact distinction.

This guide walks through what CAR policies actually cover, where the exclusions bite, and how GCs can structure their risk management approach to fill the gaps.

What Contractors All Risk Insurance Actually Covers

CAR insurance is an all-risks property policy designed for construction projects. It covers physical loss or damage to the works during construction. The term "all risks" sounds comprehensive, but every CAR policy contains exclusions that narrow the scope.

A standard CAR policy covers damage from fire, storms, theft, vandalism, collapse, and water intrusion. It covers the project works, temporary structures, construction materials on site, and construction plant and equipment.

The critical distinction sits in how the policy treats cause versus consequence. The cause (defective workmanship) is excluded. The consequence (damage to other work caused by the defective workmanship) is often covered.

The Defective Workmanship Exclusion Explained

Every CAR policy includes some form of defective workmanship exclusion. The wording varies by insurer, but two versions dominate the market.

Broad exclusion (DE1 or similar). Excludes all loss or damage caused by defective workmanship, materials, or design. This version eliminates coverage for both the defective work itself and any resulting damage. GCs under a broad exclusion carry full financial exposure for defective work consequences.

Narrow exclusion (DE3 or similar). Excludes only the cost of replacing or repairing the defective work itself. Resulting damage to sound work is still covered. This version is far more favorable for GCs.

Exclusion Type	Defective Work Cost Covered?	Resulting Damage Covered?	GC Risk Level
DE1 (Broad)	No	No	High
DE3 (Narrow)	No	Yes	Moderate
No exclusion	Yes	Yes	Low (rare)
Modified DE3	No	Partial	Medium

How to Read Your CAR Policy for Defective Workmanship Coverage

Step one is finding the exclusion clause. Look in the section titled "Exclusions" or "Exceptions" in your policy form. Search for terms like "defective design," "defective materials," "defective workmanship," and "faulty workmanship."

Step two is identifying which version you have. If the exclusion uses language like "loss or damage caused by defective workmanship," you likely have the broad version. If it says "cost of making good defective workmanship" but includes a carve-back for resulting damage, you have the narrow version.

Step three is checking for sub-limits. Some policies cover resulting damage from defective workmanship but cap the coverage at a sub-limit, often 25-50% of the total insured value.

Step four is reviewing endorsements. Amendments and endorsements can modify the base exclusion. A common endorsement adds back resulting damage coverage to a broad exclusion policy for an additional premium of 5-15%.

Real-World Scenarios: When CAR Covers Defective Workmanship Consequences

A concrete subcontractor pours a foundation slab with an incorrect mix ratio. The slab cracks. Under a narrow exclusion, the cost to demolish and repour the slab is excluded (that is the defective work itself). But if the cracking slab causes the adjacent plumbing rough-in to shift and break, the plumbing repair cost is covered as resulting damage.

A roofing subcontractor installs flashing incorrectly. The flashing itself needs replacement at the GC's cost. But water intrusion through the bad flashing damages interior drywall, electrical rough-in, and flooring. The interior damage is resulting damage and falls within the narrow exclusion coverage.

An HVAC subcontractor sizes ductwork incorrectly. The ductwork replacement is excluded. But if the undersized ducts cause condensation buildup that leads to mold growth on adjacent finishes, the mold remediation and finish replacement may be covered.

Steps GCs Should Take to Maximize CAR Coverage

Negotiate the narrow exclusion. When placing CAR insurance for a project, specifically request the DE3 (narrow) exclusion. The premium difference typically runs 5-10% above the broad exclusion rate, but the coverage difference is substantial.

Add resulting damage buy-back endorsements. If your broker cannot place a narrow exclusion, ask for a resulting damage buy-back endorsement. This restores coverage for consequential damage even under a broad exclusion framework.

Require subcontractor CAR participation. Your subcontract should require subs to be named on the project CAR policy or carry their own CAR coverage. This creates coverage alignment across the project tier structure.

Document workmanship standards. Maintain written quality standards for every trade. When a defect occurs, your documentation proves whether the sub deviated from the specified standard. This supports the resulting damage claim by establishing the defect as the proximate cause.

The Connection Between CAR and Construction Warranties

CAR coverage ends when the project reaches practical completion. Construction warranties pick up where CAR leaves off. A gap between CAR expiration and warranty activation leaves the GC exposed.

Strong construction warranty best practices address this transition explicitly. Your warranty should reference the CAR policy period and clarify which defects discovered after practical completion fall under warranty versus latent defect coverage.

Read our full analysis in Top Construction Warranty Best Practices Mistakes GCs Make.

Use Our Free EMR Calculator

Defective workmanship that causes injuries drives up your Experience Modification Rate. Our EMR Calculator Tool helps you model the financial impact of workmanship-related incidents on your insurance premiums.

FAQs

Does CAR insurance cover the cost to redo defective work? No. Every CAR policy excludes the cost of making good the defective work itself. This means demolishing and replacing a poorly built wall is not covered. Only the resulting damage to other parts of the project may be covered, depending on your exclusion type.

What is the difference between DE1 and DE3 exclusions? DE1 is a broad exclusion that denies coverage for both the defective work and any resulting damage. DE3 is a narrow exclusion that only denies coverage for the defective work itself while preserving coverage for resulting damage to sound work. DE3 is significantly more favorable for GCs.

Can GCs negotiate better defective workmanship coverage on CAR policies? Yes. Request the narrow (DE3) exclusion when placing the policy. If the insurer will only offer a broad exclusion, negotiate a resulting damage buy-back endorsement. Premium increases of 5-15% typically apply but are worth the coverage improvement.

How does defective workmanship affect CAR claims? The insurer will investigate whether the damage resulted from defective workmanship. If it did, they apply the policy exclusion. Under a narrow exclusion, they will cover resulting damage but not the defective work. Under a broad exclusion, they may deny the entire claim.

Do subcontractors need their own CAR coverage? It depends on your contract structure. On project-specific CAR policies, subs are typically named insureds. On annual CAR programs, subs may need separate coverage. Verify coverage alignment for every subcontractor before work begins.

What happens after CAR coverage expires at project completion? The GC's construction warranty and professional liability insurance take over. Some policies offer extended maintenance coverage for 12-24 months after practical completion. Review your policy terms to identify any gap between CAR expiration and warranty coverage activation.

Protect Your Projects with Automated Compliance Tracking

SubcontractorAudit verifies insurance coverage, tracks policy expirations, and flags gaps in subcontractor CAR participation automatically. Request a demo to see how it works.