Builder Insurance
Builder insurance provides comprehensive protection for building contractors undertaking construction projects from residential homes to commercial developments. Building contractors face unique risks throughout every phase of construction, from initial excavation to final handover, requiring specialised insurance coverage that addresses both on-site hazards and long-term liability exposures. Whether you’re a sole trader builder or managing large construction teams, builder insurance protects your business, equipment, workers, and clients against the complex risks inherent in construction activities.
Public Liability Insurance
Essential protection against third-party injury or property damage claims arising from building activities. This coverage addresses the high-risk nature of construction sites, including injuries to visitors, damage to neighbouring properties, and accidents involving construction equipment. Builder public liability insurance provides comprehensive protection for incidents that could result in significant compensation claims, legal costs, and potential business closure if adequate coverage is not in place.
Contract Works Insurance
Covers the construction project itself against damage from fire, theft, vandalism, weather events, and other covered perils during the building process. This protection ensures that damage to work in progress doesn’t result in financial loss for the builder, covering materials, labour costs, and the value of completed work. Contract works insurance is often required by building contracts and provides essential protection for the substantial investment represented by construction projects.
Tools and Equipment Insurance
Protects the expensive tools, machinery, and equipment that builders rely on for daily operations. This coverage includes hand tools, power tools, machinery, scaffolding, and mobile equipment against theft, damage, or breakdown. Builder tool insurance recognises that construction equipment represents a significant investment and that tool theft from construction sites and vehicles is a common and costly problem for building contractors.
Plant and Equipment Insurance
Covers larger construction machinery and equipment such as excavators, cranes, concrete mixers, and other heavy plant used in building operations. This specialised coverage addresses breakdown, damage, theft, and liability issues associated with operating heavy machinery on construction sites. Plant and equipment insurance ensures business continuity when expensive machinery requires repair or replacement.
Business Interruption Insurance
Replaces lost income when building operations are disrupted by covered events such as equipment failure, site damage, or regulatory shutdowns. Builder business interruption insurance addresses the significant financial impact when construction projects are delayed, including ongoing business expenses that continue even when building work cannot proceed. This coverage helps maintain cash flow during project delays and unexpected disruptions.
Professional Indemnity Insurance
Protects against claims related to building design, advice, project management, or professional services provided as part of construction activities. Many builders provide design input, project consultation, or specialist advice alongside their construction services. This coverage addresses claims alleging inadequate professional services, design errors, or failure to meet building standards and regulatory requirements.
Motor Vehicle Insurance
Covers work vehicles, trucks, trailers, and mobile equipment used for construction activities. Builder motor insurance includes coverage for accidents, theft, damage to tools stored in vehicles, and third-party liability arising from vehicle use. This protection extends to specialised construction vehicles and equipment transport that may not be covered by standard motor policies.
Cyber Liability Insurance
Essential protection for modern builders who use digital project management systems, store client information, or process payments electronically. Builder cyber insurance covers data breaches, ransomware attacks, system failures, and business interruption from cyber incidents. This coverage addresses the growing digital risks facing construction businesses in an increasingly connected industry.
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What is builder insurance, and how much does builder insurance cost?
Builder insurance is comprehensive coverage designed for construction contractors, protecting against the unique risks of building activities, including public liability, contract works, equipment damage, and business interruption. Unlike general business insurance, builder policies address the specific exposures created by construction sites, heavy machinery, and the responsibility for completed building work. Builder insurance costs vary significantly based on project types, annual revenue, employee numbers, equipment values, and risk management practices. Also, high-risk building activities like multi-storey construction or demolition work may face higher premiums, whilst lower-risk residential buildings may pay less.
Does builder's insurance cover defects in completed work and warranty claims?
Builder insurance typically covers liability for defects in completed work through public liability and professional indemnity coverage, though specific terms vary between policies. Coverage generally includes claims for defective workmanship that causes property damage or injury, but may exclude pure economic loss or the cost of rectifying defective work itself. Many builder policies include run-off cover that provides protection for completed projects for a specified period after handover. For comprehensive defect coverage, builders may need separate construction warranty insurance or professional indemnity policies specifically designed for design and construction services.
How does a builder's insurance address work at heights and scaffolding risks?
Builder insurance addresses work at heights through comprehensive public liability coverage that includes scaffolding accidents, falls, and dropped objects that could cause injury or property damage. Coverage typically extends to scaffolding collapse, accidents during roof work, and injuries to workers or third parties from height-related incidents. However, builders must comply with workplace safety regulations and industry standards for working at heights. Some policies may have specific requirements for safety equipment, training, or scaffolding standards, and non-compliance could affect claim settlements.
What environmental and pollution liabilities does builder's insurance typically cover?
Builder insurance can include limited environmental liability coverage for accidental pollution incidents arising from construction activities, such as fuel spills, dust emissions, or contamination from building materials. However, coverage varies significantly between policies, with many excluding pre-existing contamination, deliberate pollution, or certain types of environmental damage. Builders working on contaminated sites, handling hazardous materials, or conducting demolition work may need separate environmental liability insurance. It’s important to understand environmental exclusions in standard builder policies and seek specialist coverage for projects with significant environmental risks.
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Why work with Knightsbridge Insurance Group?
Knightsbridge Insurance Group is an Insurance Broking Business with over 70 years of collective insurance experience and is founded on generational values that make you feel secure, protected and cared for. As we grow and expand the Knightsbridge Family, we continue to have a deep understanding of your desire to innovate and be extraordinary — both in business and in life.

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