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Contractor Insurance in Canada

Contractor insurance protects trades and construction businesses from the cost of things going wrong on the job: a client’s property is damaged, someone is hurt on site, your tools are stolen or finished work fails months later.

Written by
Beatriz Alban Cabaco
Content Researcher
Reviewed by
Sean Nolan
10 years in insurance
Last updated
October 9, 2026

What is contractor insurance?

Contractor insurance isn’t one policy. It’s a package for trades and construction businesses, usually built around commercial general liability insurance and cover for your tools and equipment, with other coverages added to fit your trade and the work you take on. It’s sometimes called construction insurance.

What’s in it depends on what you do. A painter working in occupied homes, an electrician on commercial sites and a general contractor running renovations all face different claims, and insurers price each trade separately.

General liability
Claims that your work injured someone or damaged their property.
Tools and equipment
Theft of or damage to your tools, on site, in the truck or in between.
Completed work
Claims that arrive after the job is handed over, usually part of general liability.
Materials before installation
Materials in transit, stored or on site before they’re installed, through an installation floater.

Which coverage does a contracting business need?

Your trade, the jobs you take on and your contracts decide it. Most contractors start with general liability and tools cover, then add what their work calls for. Contractor liability insurance is the part clients ask about first.

General liability
The core of contractor insurance, and what clients ask to see first.
Protects against
Injury to others and damage to their property caused by your work
Commonly needed by
Almost every contractor who works on someone else's property
General liability insurance
Commercial property
Covers the places you work from and what you keep there.
Protects against
Your shop, yard, office, stock and stored tools
Commonly needed by
Contractors with a shop, a yard or a storage unit
Commercial property insurance
Builders risk
A policy for the project itself, separate from your business cover.
Protects against
A building and its materials while it's being built or renovated
Commonly needed by
General contractors and owners on a build or major renovation
Builders risk insurance
Tools and equipment
Usually added to a contractor’s package, on site, in the truck and in between. Ask how the policy treats tools left in a vehicle overnight.
Protects against
Theft of or damage to your tools and equipment, wherever they are
Commonly needed by
Every trade that relies on its own tools
Professional liability
For the advice and design side of the job, which general liability excludes.
Protects against
Claims that your design, plans or advice cost a client money
Commonly needed by
Design-build firms and contractors who draw plans or specify work
Professional liability insurance
Business interruption
Helps cover rent, wages and bills while you can’t work.
Protects against
Lost income while a covered loss, such as a fire, shuts you down
Commonly needed by
Contractors who rely on a shop, yard or workshop to operate
Business interruption insurance

Pollution liability is also worth asking about if your trade handles fuel, chemicals, mould or asbestos, since general liability commonly excludes pollution.

Who needs contractor insurance?

A good test: do you work on other people’s property, with tools and materials, for clients who could hold you responsible if something goes wrong? Then contractor insurance is commonly expected, whether you’re a company or working on your own.

General contractors and renovators
General contractor insurance for firms running jobs, hiring subs and working in clients’ homes and buildings.
Electrical, plumbing and HVAC
Trades whose work can cause fire or water damage long after they’ve left.
Roofing and exterior work
Roofers, siding and eavestrough installers, working at height and exposed to weather.
Finishing trades
Painters, drywallers, flooring and tile installers working inside finished spaces.
Landscaping and excavation
Outdoor and site work, where buried utility lines and heavy equipment add risk.
Independent contractors and subs
Sole proprietors and subcontractors, who usually need their own policy, not a client’s.

What does a real contractor claim look like?

These examples are illustrative, not real claims. Whether a policy pays depends on its wording, the limits and the deductible.

A client's floor is damaged during an install
While installing kitchen cabinets, a crew drops a unit and gouges the client’s hardwood floor. General liability can respond to the cost of repairing the floor, after the deductible.
Tools are stolen from a truck overnight
Someone breaks into a work truck parked outside a contractor’s home and takes the power tools. Tools and equipment cover can respond to replacing the tools. General liability doesn’t, and damage to the truck itself is a matter for the vehicle’s own policy.
A fitting leaks after the job is finished
Two months after a bathroom renovation is handed over, a plumbing fitting starts to leak and damages the finished basement below. Completed operations cover, part of many general liability policies, may respond to the water damage. Redoing the faulty fitting itself is commonly excluded.
Materials are damaged before they're installed
New windows stored on site are cracked when a pallet tips over in high winds, before they’re installed. An installation floater can respond to the materials. A general liability policy usually doesn’t cover your own materials.

The third example is the one contractors most often misread: insurance commonly pays for the damage your work causes, not for fixing the work itself.

Common claims by trade

Every trade has its own pattern of claims, which is one reason insurers classify and price each one separately. These are common examples, not a full list.

TradeA common claimCover that usually responds
General contractors and renovatorsDamage to the client’s property, or to a neighbouring unit during the workGeneral liability
ElectriciansA fire traced back to wiring after the jobGeneral liability, including completed operations
PlumbersWater damage from a leak or a burst connectionGeneral liability, including completed operations
RoofersRain getting in during a tear-off, or materials falling on a car belowGeneral liability
PaintersOverspray on vehicles or neighbouring propertyGeneral liability
Landscaping and excavationStriking a buried gas, water or cable line while diggingGeneral liability
Any tradeTools stolen from a job site or a vehicleTools and equipment cover

What clients and general contractors will ask for before you start

Often the moment a contractor first needs insurance is when a client, property manager or general contractor asks for proof before the job starts. Expect some or all of these:

A certificate of insurance
A short document from your insurer showing your policy, the type of cover, the limits and the dates it’s in force. You request it from your insurer, often for each client who asks. Our guide to certificates of insurance explains what’s on one and how to get it.
Being named as an additional insured
Some contracts ask you to add the client or general contractor to your policy as an additional insured, which extends its protection to them for claims connected to your work. It’s an endorsement your insurer issues, so ask before you sign.
A minimum liability limit
Contracts commonly set the minimum limit you have to carry. Read it before you quote the job, because raising a limit can take time and changes the price.
Proof of tools or equipment cover
Some commercial sites and general contractors also ask for it, so that your losses don’t become theirs.

Keep the wording your contract uses, and check that the certificate matches it. A certificate that names the wrong party or the wrong limit can hold up the start of a job.

Hiring subcontractors, or working as one

Who insures what depends on where you sit in the job. As a rule of thumb, everyone on a project carries their own liability insurance and insures their own tools.

You areWhat you usually carryWhat to ask others for
The general contractorGeneral liability, tools and equipment, and builders risk if the contract says soA certificate of insurance from every subcontractor before they start
A subcontractorYour own general liability and tools coverThe contract’s insurance requirements, so your certificate matches them
An independent contractor working aloneYour own general liability and tools cover, as a sole proprietor or companyNothing usually, but expect clients to ask you for proof

A general contractor may be held responsible for damage caused by a subcontractor who has no insurance of their own, which is why collecting certificates matters. Subcontractor insurance isn’t a separate product: it’s the same contractor package, bought by the sub.

Contractor insurance vs builders risk vs the client’s home insurance

People search for “construction insurance” to mean two different things: cover for the contractor’s business, or cover for the building being worked on. They’re separate policies.

PolicyWhat it insuresWho usually buys it
Contractor insuranceYour business: claims against you, your tools, your completed workYou, the contractor
Builders risk (course of construction) insuranceThe building and materials while it’s being built or renovatedThe owner, or the contractor if the contract says so
The client’s home or building insuranceThe client’s own property and their own liabilityThe client

The client’s policy isn’t there to cover your mistakes. If your work causes the damage, their insurer may pay the client and then try to recover the cost from you, which is when your liability insurance matters.

How much does contractor insurance cost?

The price depends on what you do and how much of it you do. Insurers commonly look at:

  • Your trade and the work itself, including work at heights, below ground, with heat or flame, or near utilities
  • Residential or commercial work, and the size of your typical job
  • Revenue and payroll, and whether you have employees or hire subcontractors
  • The limits you need, which your contracts often set
  • The value of your tools and equipment
  • Years in business and your claims history
  • The deductible you choose

To keep the cost down, describe your work accurately (a mismatch can cause trouble at claim time), keep tools locked up and recorded, practise good site safety, pick a deductible you could actually pay, and compare quotes from more than one insurer. Websites quote all sorts of figures, but none of them can tell you what your business would pay. A quote for your own business is the only reliable number.

Is contractor insurance required?

No single law requires every contractor to carry liability insurance, but in practice it’s often a condition of getting the work.

Who may askWhat they usually want
Clients and homeownersProof of liability insurance before you start
General contractorsA certificate of insurance, a minimum limit and sometimes additional insured status
Property managers and condo corporationsProof of cover before you work in the building
Public and commercial projectsInsurance requirements set out in the tender or contract

Some licensing bodies and municipalities may also ask for proof of insurance for certain trades or permits, so check the rules for your trade and province.

What contractor insurance doesn’t cover

A contractor package covers a lot, but not everything. Here’s where common gaps go:

Not coveredWhat usually covers it
Repairing or redoing your own faulty workGenerally excluded; the damage it causes may be covered
Injuries to your own workersYour provincial workers’ compensation board, such as WSIB in Ontario
Your vehiclesA separate commercial auto policy
The building under constructionBuilders risk insurance
Errors in your design, plans or adviceProfessional liability insurance
Pollution, such as a fuel spill or mouldPollution liability, if it’s added
Penalties in your contract for finishing lateGenerally not insurable

Get ready: what an insurer will ask

Having these answers ready makes quotes faster and more accurate:

  • Your trade or trades, and roughly what share of your work is in each
  • Whether you work on homes, commercial buildings or both
  • Your annual revenue and payroll
  • How many employees you have, and whether you hire subcontractors
  • The size of your largest typical job
  • The value of your tools and equipment
  • Any certificate, limit or additional insured requirements in your contracts
  • Your claims history

Contractor insurance FAQs

Does a homeowner's insurance cover a contractor working in their home?
Not usually for your mistakes. The homeowner’s policy is there to cover their home and their own liability, and if your work causes the damage, their insurer may try to recover the cost from you. That’s why clients commonly ask contractors for proof of their own liability insurance before work starts.
Do subcontractors need their own insurance?
Usually, yes. A general contractor’s policy may not cover the work of the subcontractors it hires, and many general contractors ask every sub for a certificate of insurance before they start. Check your contract and your policy wording.
Do I need contractor insurance as a sole proprietor?
If you work on other people’s property, very often yes in practice. Working alone doesn’t change your liability if a client’s property is damaged, and many clients and general contractors won’t hire a contractor without proof of liability insurance.
Is WSIB the same as liability insurance?
No. WSIB in Ontario, and the workers’ compensation board in each other province, covers injuries to your own workers. Liability insurance covers claims from other people, such as a client or a member of the public, and it excludes injuries to your own workers.
What is a certificate of insurance?
A short document from your insurer that confirms you have a policy, the type of cover, the limits and the dates it’s in force. Clients and general contractors commonly ask for one before you start. You request it from your insurer. See what a certificate of insurance is.
Does contractor insurance cover my work after the job is finished?
It can. Many general liability policies include completed operations cover, which may respond to damage or injury caused by your work after it’s handed over. Redoing or repairing the faulty work itself is commonly excluded. Check your policy, or ask the insurer when you compare quotes.
How much liability coverage should a contractor carry?
Start with your contracts: clients, general contractors and property managers often set a minimum limit, and you’ll need to meet it to get the job. Beyond that, the limit is a choice to discuss with the insurer, based on the size of your jobs and the risks of your trade.

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