A contractor can have all the familiar policies in place and still develop gaps in cover.
The problem is often not that insurance was arranged badly in the first place. It is that the business has changed since then.
A contractor that once worked on small domestic projects may now be taking on commercial contracts, supervising larger teams, hiring expensive plant or accepting design responsibility. Contract values can increase, clients can demand different insurance terms and subcontracting arrangements can become more complicated.
If the insurance continues to reflect the business as it looked two or three years ago, the policy may no longer match the work being carried out.
That is why contractor insurance should be reviewed when the business changes, not only when the renewal date appears in the diary.
Your business description still reflects the company you used to be
Insurers assess contractor risk partly on the activities declared when cover is arranged.
That description can become outdated surprisingly quickly.
A general builder may begin taking on structural work. A contractor focused on domestic projects may move into larger commercial developments. A specialist trade may add new services, work at greater heights or depths, or begin operating in more complex environments.
Changes that deserve attention can include:
- Moving from domestic to commercial work
- Taking on higher-value projects
- Becoming a principal contractor
- Adding a new trade or specialist activity
- Undertaking excavation or structural alterations
- Increasing work involving heat
- Working at greater heights or depths
- Moving into higher-risk premises or locations
- Carrying out more work in occupied buildings
The issue is not that every change automatically causes a problem.
It is whether the insurer still has an accurate picture of the work being undertaken.
A policy arranged for internal refurbishment work may not have been designed with major structural alterations in mind. Similarly, work in hospitals, airports, industrial facilities or other specialist sites can involve different underwriting considerations from routine contracting work.
The business description should therefore evolve with the business itself.
Your contracts now demand more from your insurance
Contractors often start with relatively straightforward agreements and later move into contracts containing far more detailed insurance requirements.
A larger client may require:
- Higher liability limits
- Professional indemnity insurance
- Joint names arrangements
- Particular project-specific covers
- Insurance to remain in place for a specified period
- Evidence of subcontractor insurance
- Specific indemnities
- Additional protection for surrounding property or existing structures
The problem appears when the contractual obligation changes but the insurance does not.
Public liability insurance, for example, is not a guarantee that every liability accepted under a commercial contract will automatically be covered.
The wording of the contract and the wording of the insurance need to make sense together.
This becomes particularly important when a contractor wins larger tenders and accepts insurance clauses that were not relevant on previous projects.
A contractor preparing to take on a larger construction project should review those requirements before the agreement is signed rather than after work has already started.
You have taken on design responsibility without realising it
A contractor does not need a design department to have a professional exposure.
Design responsibility can develop gradually.
You may:
- Produce drawings
- Recommend a specification
- Alter a client’s existing design
- Select materials or systems
- Provide technical recommendations
- Design temporary works
- Arrange design through a subcontractor
- Accept a design-and-build obligation
Any of those activities can move the business beyond purely physical contracting work.
Public liability insurance is generally concerned with injury to third parties and damage to their property. It is not usually intended to deal with purely financial loss arising from professional errors, omissions or inadequate design.
That is where professional indemnity insurance may become relevant.
The important question is not whether the business calls itself a designer.
It is whether somebody is relying on its drawings, specification, technical judgement or advice.
Delegating design to another party does not necessarily remove the contractor’s own contractual responsibility either. If the contractor has accepted responsibility to the client, the insurance position needs to reflect that arrangement.
Your workforce and subcontractor model has changed
Contractors often change the way they resource projects as they grow.
A business that once relied mainly on directly employed staff may begin using more labour-only subcontractors, bona fide subcontractors, agency workers or specialist trades.
Those arrangements can affect insurance.
The distinction between different types of subcontractor is important because the contractor’s responsibilities may not be the same in every case.
As the workforce changes, review:
- Direct payroll
- Labour-only subcontractor costs
- Bona fide subcontractor expenditure
- Agency labour
- Who supervises the work
- Who supplies tools and equipment
- Whether subcontractors maintain their own insurance
- The insurance limits subcontractors are required to hold
A common problem arises when the workforce has expanded substantially but the figures declared to insurers still reflect a much smaller business.
Similarly, holding evidence of a subcontractor’s insurance does not automatically remove the main contractor’s own responsibilities.
The contractor may still have obligations around project management, supervision and the contract with the client.
Your plant and equipment values have increased
Plant exposure can change quickly as a contracting business grows.
A business may begin with relatively modest tools and equipment, then gradually accumulate specialist machinery, higher-value kit and hired-in plant.
The insurance values do not always increase at the same pace.
Questions worth reviewing include:
- Has the value of owned plant increased?
- Are you hiring equipment more frequently?
- Are individual items worth more than they used to be?
- Is equipment regularly stored in vans?
- Is plant moved between several sites?
- Are tools left temporarily at project locations?
- Do hiring agreements create continuing hire charges after damage or theft?
- Have security arrangements changed?
Hired-in plant deserves particular attention because the contractor may be responsible for equipment it does not own.
The hiring agreement can affect what the contractor is expected to pay if the plant is damaged, stolen or unavailable.
Tools and portable equipment can create similar problems if values have risen but policy limits have not been reviewed.
An old estimate of the tools carried in a van may bear little resemblance to the equipment now needed for the contractor’s work.
Your projects involve risks the annual policy was not built around
Annual contractor insurance can provide a practical foundation, but not every project presents the same risk.
A contractor may occasionally move into work involving:
- Underground services
- Existing structures
- Water
- Contaminated land
- Rail infrastructure
- Major excavation
- Occupied premises
- Valuable neighbouring property
- Unusual construction methods
- Higher-risk industrial environments
These projects can introduce exposures that need individual consideration.
Environmental risk is one example. Work involving contaminated land, fuel, waste or pollutants can create issues beyond an ordinary accidental damage claim. Depending on the activity, environmental impairment and pollution risks may need separate attention.
Existing structures can also be particularly important.
A contractor working on a refurbishment or fit-out may be carrying out relatively low-value works inside a building worth many times more than the contract itself.
The insurance position for damage to that existing property may not be as straightforward as the contractor assumes.
The same applies to contract works insurance.
The value, duration, materials, temporary works and site arrangements should reflect the actual project rather than being treated as identical from one job to the next.
Your contract values have grown faster than your insurance limits
Growth can create another simple mismatch.
A contractor may still hold insurance limits chosen when typical projects were significantly smaller.
At the time, those limits may have been perfectly reasonable.
Several years later, the business may be working on higher-value commercial projects with much larger exposures.
Review the figures in context.
That includes:
- Maximum contract values
- Public liability limits
- Professional indemnity limits
- Contract works values
- Plant limits
- Hired-in plant exposure
- Tools and equipment values
- Subcontractor expenditure
Increasing a limit is not automatically the answer.
A higher headline figure does little if exclusions, conditions or the scope of the policy mean the relevant activity is not adequately contemplated.
The review needs to look at both the amount of cover and what the policy actually applies to.
Your clients now expect evidence you were never previously asked for
Another sign that the insurance programme may need to evolve is when tenders begin asking for documents or limits the business has not previously needed.
A client may ask for:
- A higher public liability limit
- Employers’ liability evidence
- Professional indemnity insurance
- Contract works details
- Hired-in plant cover
- Environmental liability
- Specific policy endorsements
- Evidence of subcontractor controls
This often happens naturally as contractors move into larger projects or begin working for more sophisticated commercial clients.
The tender requirement should not simply be treated as paperwork to obtain after the work has been won.
If the contract demands cover the business does not currently hold, there may be cost, underwriting or availability implications.
Reviewing the requirement before committing to the contract gives the contractor more room to decide whether the obligation is realistic.
Insurance should be reviewed when the business changes
Renewal is an obvious point to review contractor insurance, but it should not be the only one.
Certain changes should prompt a conversation during the policy year.
These can include:
- Winning a significantly larger contract
- Taking on a new type of work
- Moving into design and build
- Adding a specialist trade
- Increasing work at height or depth
- Hiring substantially more staff
- Changing subcontractor arrangements
- Purchasing expensive plant
- Increasing use of hired-in equipment
- Working in a new environment
- Expanding geographically
- Taking on a major client with unusual insurance requirements
- Entering a contract with unfamiliar indemnity clauses
These changes do not automatically mean new insurance is required.
They do mean the assumptions behind the existing policy should be tested.
The most useful review starts with what has changed
A contractor insurance review should not begin with a generic list of policies.
It should begin with the business.
Ask:
- Are we doing anything now that we did not do when the policy was arranged?
- Are our projects significantly larger?
- Are our clients asking for different insurance?
- Are we taking on more design responsibility?
- Has our workforce model changed?
- Are we using more subcontractors?
- Has the value of plant and equipment increased?
- Are we working in more complex locations?
- Have our contracts become more demanding?
The answers help identify where the insurance programme may have drifted away from the way the business actually operates.
Useful information for a review can include current activities, upcoming contracts, project values, payroll, subcontractor spend, plant schedules, unusual contractual requirements and details of any new higher-risk work.
A well-structured construction insurance programme should reflect the contractor you are today, not the contractor you were when the policy was first arranged.
Insurance cannot remove every construction risk. But keeping the policy aligned with changing work, contracts and responsibilities reduces the chance that a significant gap is discovered only after something has already gone wrong.
FAQs About Reviewing Contractor Insurance
Should contractor insurance be reviewed after acquiring another business?
Yes. An acquisition can introduce new activities, employees, contracts, equipment and liabilities that were not reflected in the existing insurance programme. The combined business should be reviewed rather than assuming the previous policies will automatically remain suitable.
Can working in a different part of the UK affect contractor insurance?
Potentially. Geographic expansion can introduce different project types, client requirements or working environments. Contractors should also check whether any territorial restrictions or location-specific policy conditions are relevant to the work being undertaken.
Does changing company structure mean contractor insurance should be reviewed?
It can. Incorporating a business, creating a group structure, adding subsidiaries or changing trading entities can affect who needs to be insured and which company is entering contracts. Policy documentation should accurately reflect the legal entities carrying out the work.
Should contractors review insurance before buying expensive machinery?
Yes. New machinery can increase asset values and may also change the type of work the business can undertake. Before relying on existing cover, check whether the equipment falls within current limits and whether any storage, security or operating conditions apply.
Can a contractor’s insurance need changing after opening a new depot or premises?
Yes. Additional premises can introduce property, stock, equipment, security and liability exposures that were not previously present. The insurer should have an accurate picture of where the business operates and what is kept at each location.