Getting builder insurance quotes is the easy part. Comparing them properly is where most builders trip up. Two quotes can show the same premium, the same limit of indemnity, and the same policy type — yet one covers you properly while the other leaves you exposed when a claim hits. The difference is rarely visible on the quote summary. It lives in the excess structure, the sub-limits buried in the policy wording, the exclusions that apply to your specific trade, and the conditions you must meet for cover to respond.
Missing any of these details can turn a cheap premium into an expensive mistake. And in construction, where a single liability claim can run into six or seven figures, the cost of getting it wrong isn’t the premium you paid — it’s the claim the policy doesn’t cover.
This guide walks you through how to compare builder insurance quotes as an Australian tradesperson or building company owner. It covers what to look for beyond the price, how to spot a quote that’s too good to be true, the questions to ask before you buy, and how to make sure the policy you choose actually matches the work you do.
A quote is not a policy. It’s a summary of what the insurer proposes to offer, subject to the full policy terms and conditions. Always read the Product Disclosure Statement before accepting a quote. If something isn’t clear, ask before you buy — not after you claim.
Start With What You Actually Need
Before you compare quotes, get clear on what cover your business requires. This avoids two common and costly problems: buying cover you don’t need and paying for it, and not buying cover you do need and finding out when you make a claim.
The insurance requirements for a sole trader doing small residential renovations are different from those of a head contractor running multi-storey commercial projects. Your starting point should be a honest list of what you need, driven by your work and your contracts.
Public Liability Insurance
Public liability is the foundation of builder insurance. It covers injury to third parties and damage to third-party property caused by your building activities. If you’re a builder or tradie working on any site that isn’t your own, public liability is non-negotiable.
When comparing quotes, the first question isn’t “what’s the premium?” It’s “what’s the limit of indemnity?” Common limits are $5 million, $10 million, and $20 million. Your contract or client requirements will dictate what you need. A cheap quote with a $5 million limit isn’t comparable to one with a $20 million limit — you’re buying materially less cover, and if a claim exceeds $5 million, you’re personally liable for everything above it.
Workers Compensation
If you employ anyone — full-time, part-time, casual, or apprentice — workers comp is a legal requirement in every Australian state and territory. If you operate across multiple states, you may need multiple policies. When comparing workers comp quotes, make sure the wage estimates used are consistent. An artificially low wage estimate produces a deceptively low premium now — and a reconciliation bill at year-end that can be painful.
Contract Works Insurance
Contract works — also called construction all-risks — covers the physical works in progress against damage from fire, storm, theft, vandalism, and accidental damage. When comparing contract works quotes, look beyond the premium to the coverage details. What’s the maximum single contract value covered? Does the policy include materials on site and in transit to site? Does it cover removal of debris and professional fees? Is there cover for existing structures you’re working on or around? These inclusions vary materially between policies.
Tools and Equipment
Tools cover is usually optional, and it’s worth comparing the structure of the cover, not just the total sum insured. A policy with a $50,000 total limit but a $2,000 per-item cap is materially different from one with the same total limit and no per-item restriction. Look also at whether tools are covered in a vehicle or only on a secured site, and what the theft excess is — it’s often higher than the general excess.
Professional Indemnity
If your work includes any design, specification, certification, or advisory element, you may need professional indemnity insurance. When comparing PI quotes, pay attention to the retroactive date — cover for work done before the policy started — and whether the policy operates on a claims-made or occurrence basis. These features determine whether a claim that surfaces years after the work was done will be covered.
What to Look for Beyond the Premium
The premium is the most visible number on a quote, but it’s rarely the most important. Here’s what to scrutinise on every quote you receive before making a decision.
The Limit of Indemnity
The limit of indemnity is the maximum the insurer will pay for any one claim or, for some policies, in aggregate across the policy period. For public liability, a serious personal injury claim can consume a $5 million limit quickly — medical care, rehabilitation, loss of earnings, and legal costs add up fast. If your client contract requires $10 million, a cheaper $5 million quote isn’t a valid option. It doesn’t meet your contractual obligation, and if a claim breaches the limit, the shortfall comes out of your pocket.
When comparing quotes, standardise the limits first. Align all quotes to the same limit of indemnity before you compare anything else. A quote with a different limit is pricing a different risk.
The Excess
The excess is the amount you pay towards each claim before the insurer pays the rest. Standard public liability excesses for builders typically range from $250 to $2,500, but they can be higher for specific types of claims or for builders with claims history.
When comparing excesses, look at:
- The standard excess. A quote with a $500 lower premium but a $2,000 higher excess may cost you more the moment you make a claim. If you claim rarely, the lower premium with higher excess might be the better deal. If you’re in a higher-risk trade, the lower excess might be worth the extra premium.
- Whether there are different excesses for different claim types. Property damage claims often carry a lower excess than personal injury claims. Theft claims on contract works policies frequently have a separate, higher excess — sometimes $5,000 or more.
- Whether the excess applies per claim or per incident. If a single event causes multiple claims, a per-incident excess is better than a per-claim one.
Don’t default to the lowest excess. A higher excess reduces your premium, and if you rarely claim, the premium savings may comfortably exceed the extra out-of-pocket cost on the rare occasion you do claim. Run the numbers for your own claims history.
Sub-Limits and Inner Limits
A sub-limit caps the amount the insurer will pay for a specific category of claim, even within a larger overall limit of indemnity. This is where quotes that look similar on the surface can differ dramatically.
For example, a public liability policy with a $10 million overall limit might have a $500,000 sub-limit for damage to property in your care, custody, or control. If you’re renovating a client’s home and your work accidentally causes $800,000 of damage to the existing structure, the insurer pays only $500,000 — and you wear the remaining $300,000, even though your overall limit is $10 million.
Sub-limits are often buried in the policy wording and not highlighted on the quote summary. Ask about them specifically. The sub-limits that matter most for builders include:
- Care, custody, and control — damage to property you’re working on
- Vibration and removal of support — relevant for excavation and demolition work
- Underground services — hitting a gas main, water pipe, or telecommunications cable
- Asbestos-related claims — commonly excluded or heavily sub-limited
- Pollution and contamination — often excluded outright for builders, but check
- Goods sold or supplied — if you supply materials that later cause damage
Two quotes with the same limit of indemnity and similar premiums can have very different sub-limit structures. The only way to know is to ask.
Exclusions
Every insurance policy has exclusions — things the insurer won’t cover under any circumstances. Some are universal across builder policies. Others vary by insurer and can render a policy unfit for your specific work.
Standard exclusions in builder public liability policies include: deliberate or reckless acts, contractual liabilities beyond what common law would impose, property damage to the work you’re performing (that’s contract works territory), and liability from unregistered motor vehicles (covered by motor insurance).
But there are trade-specific exclusions that matter far more for your day-to-day risk:
- Height exclusions. Some policies restrict cover for work above two or three storeys. If you’re a roofer or work on multi-storey scaffolds, this exclusion makes the policy worthless for your core work.
- Demolition exclusions. Many standard policies exclude or restrict demolition. Even partial strip-out can fall into this category.
- Asbestos exclusions. Nearly all builder policies exclude or heavily restrict asbestos-related claims. If your work involves any building constructed before the late 1980s, asbestos exposure is a real risk.
- Underpinning and structural alteration exclusions. Some policies exclude liability arising from work that alters the structural integrity of a building.
- Water damage exclusions for specific trades. Plumbers and waterproofers need to check that water damage claims aren’t excluded or sub-limited to the point of being useless.
When comparing quotes, ask each insurer what exclusions apply to your specific trade and scope of work. A policy that excludes your core activity is worthless regardless of how low the premium is.
Policy Conditions
Policy conditions are things you must do — or not do — for the cover to apply. They’re not suggestions. Breaching a condition can give the insurer grounds to reduce or decline a claim entirely.
Common conditions in builder policies include:
- Taking reasonable precautions to prevent loss or damage. If you left a site unsecured and materials were stolen, the insurer may argue you failed to take reasonable precautions.
- Notifying the insurer of any incident that may lead to a claim within a specified period — often 30 days.
- Not admitting liability or making any settlement offer to a third party without the insurer’s consent. This is critical — saying “sorry, we’ll fix it” at the site of an incident can compromise your cover.
- Cooperating with the insurer in investigating and defending any claim.
- Maintaining adequate site security, including lockable fencing and secure storage.
- Protecting partially completed works from weather with tarpaulins, temporary roofing, or adequate drainage.
Understand what your policy requires of you before you need to rely on it. A condition you discover after an incident is a condition you may have already breached.
Reading a Product Disclosure Statement: What Actually Matters
Every insurance policy comes with a Product Disclosure Statement — the PDS. It’s the full policy document, and it contains everything the quote summary leaves out. Yes, it’s long. Yes, the language is dense. But reading it before you buy is the single most effective way to avoid buying a policy that doesn’t cover what you think it covers.
You don’t need to read every page of a hundred-page PDS. Focus on these sections:
The insuring clause. This is usually near the beginning. It tells you what the policy actually covers. Read it carefully — if your work isn’t described here, it may not be covered.
The definitions. Insurance policies define terms in ways that don’t always match everyday usage. “Employee,” “subcontractor,” “occurrence,” “property damage” — these words have specific meanings that determine whether a claim is covered. A quick scan of the definitions section can reveal gaps you’d otherwise miss.
The exclusions. This is the most important section in the entire document. It tells you when the policy won’t respond. Read every exclusion and ask yourself whether it applies to your work. If an exclusion covers something you do regularly, you have a gap.
The conditions. As discussed above, these are your obligations. Know them. A condition you breach through ignorance is still a breached condition.
The claims section. How do you notify the insurer of a claim? What information do you need to provide? What are the time limits? Know the process before you need it.
The schedule or endorsement pages. These customise the standard wording to your specific policy. Check that the limits, excesses, and any special conditions match what the quote summary says. Errors on the schedule are not uncommon, and they can cause problems at claim time.
Questions to Ask Your Insurer or Broker
When you have a quote in front of you, here are the questions worth asking before you accept it. Get the answers in writing — an email is fine — so you have a record.
“Does this policy cover the specific trade work I perform, at the heights and in the conditions I actually work in?” This is the most important question. If you’re a roofer, confirm cover for work at height. If you do excavation, confirm cover for underground services and vibration. If you work on commercial sites, confirm the policy isn’t limited to residential.
“What is the excess for a claim involving damage to a client’s property?” For most builders, this is the most likely claim scenario. Know what it costs you before the claim happens.
“Are there any sub-limits that apply to the work I do?” Ask specifically about care, custody, and control, underground services, vibration and weakening of support, and asbestos. These are the sub-limits that most commonly catch builders out.
“Does this policy cover claims arising from work performed by subcontractors?” If you use subcontractors — and most builders do — you need a policy that covers subcontractor-caused losses. Some policies exclude them. If yours does, get a different quote.
“What are the policy conditions I need to meet on site for cover to apply?” Understand your obligations around site security, weather protection, and incident notification. Write them down somewhere you’ll see them.
“What happens at renewal if I make a claim this year?” Understand whether you’ll lose a no-claim bonus and how much that’s worth. A policy with a generous no-claim bonus might be worth protecting with a higher excess.
“Is this policy on a claims-made or occurrence basis?” Most builder public liability policies are occurrence-based — they cover incidents that happen during the policy period, regardless of when the claim is made. Professional indemnity is usually claims-made — the claim must be made while the policy is active. Know which you’re buying.
Online Comparison vs Broker: Which Approach Works for You
Both online comparison and broker-arranged insurance have their place. The right choice depends on the complexity of your insurance needs.
Online comparison — through insurer websites or platforms that aggregate quotes from multiple providers — is fast, convenient, and often cheaper. You can get quotes in minutes rather than days, compare them side by side, and buy cover immediately. The trade-off is that you’re responsible for understanding the cover yourself. If your insurance needs are straightforward — public liability, contract works, tools cover for a single-state builder doing standard residential work — online comparison can work well. Platforms like BizCover let you compare quotes from multiple Australian insurers in one place, which simplifies the comparison process.
A broker provides tailored advice and advocacy. They’ll assess your business, identify your insurance needs, approach insurers on your behalf, and help you compare quotes with the benefit of their market knowledge. A broker can also assist during claims — they know how to present a claim and can advocate for you if the insurer’s response isn’t satisfactory. Brokers charge a fee or receive commission from the insurer. If your insurance needs are complex — multi-state operations, high-value projects, unusual trades, significant claims history — a broker’s expertise is worth the cost.
Many builders use a hybrid approach: online comparison for straightforward covers and a broker for complex ones. There’s no rule that says you must use one method exclusively.
The worst approach is neither: letting your policy auto-renew year after year without comparing alternatives. Even if you’re happy with your current insurer, the market moves, and a quick comparison at each renewal keeps your current insurer honest.
Common Traps in Cheap Builder Insurance Policies
Some quotes are cheap for a reason, and that reason is usually that they’re providing less cover. Here are the traps to watch for.
The Residential-Only Trap
A quote looks great — low premium, decent limit — but the policy only covers residential work. You take on a small commercial fit-out, and the insurer declines the claim because the work falls outside the policy scope. If you do any commercial work, even occasionally, make sure your policy covers it. A residential-only policy is cheaper for a reason.
The Undeclared Subcontractor Trap
You get a quote based on being a sole operator. But you regularly engage subcontractors for electrical, plumbing, and plastering work. The policy excludes subcontractor-caused losses, and you don’t know it until a sub’s mistake generates a claim. Always disclose subcontractor usage when quoting, and verify the policy covers subs.
The Missing Excess Trap
The quote shows a competitive premium but doesn’t mention the excess. Every policy has an excess. A quote that doesn’t tell you what it is cannot be properly compared. Ask for the excess structure before making a decision.
The Incorrect Turnover Trap
You estimate your annual turnover at $300,000 when quoting, but halfway through the year you’re already past $500,000. If you have a claim, the insurer may apply a proportional reduction — meaning you only receive a percentage of the payout — based on the understated turnover. Tell the truth when quoting, and update your insurer if your circumstances change mid-year.
The Assumed Work Scope Trap
The quote assumes you only do ground-floor domestic work, but you actually do multi-storey commercial projects. The premium is based on the wrong risk profile, and if a claim arises from work outside the assumed scope, the insurer may decline it. Answer quoting questions accurately, even if honesty pushes the premium up. A premium that reflects your real risk is always cheaper than a denied claim.
What Good Cover Looks Like vs Bare Minimum
It helps to have a mental benchmark for what adequate builder insurance looks like at different levels of the market. This isn’t a recommendation — your specific needs depend on your work and your contracts — but it gives you a reference point for evaluating quotes.
For a sole trader or small builder doing residential renovations, extensions, and new single homes: public liability with at least $5 million cover (moving to $10 million if your contracts demand it), contract works cover for your typical project values, and tools and equipment cover matching the replacement cost of your kit. Workers comp if you have any employees. Professional indemnity only if you provide design or advisory services.
For a medium builder handling a mix of residential and light commercial work: public liability at $10 million minimum, often $20 million for commercial contracts. Contract works cover aligned with your largest project values, including materials on site and in transit. Workers comp in all states where you have employees. Tools and equipment with adequate per-item limits. Professional indemnity if design-and-construct contracts require it.
For a head contractor on multi-storey commercial or multi-unit residential projects: public liability at $20 million, contract works covering full project values with adequate sub-limits for debris removal and professional fees, workers comp across all operating states, professional indemnity as required by head contracts, and management liability cover for directors and officers.
The bare minimum — public liability at the lowest legally required limit, no contract works, no tools cover — might be cheap, but it leaves significant gaps. A quote that only provides the bare minimum isn’t a bargain. It’s underinsurance, and the cost shows up when you claim, not when you buy.
Practical Steps for Comparing Quotes
When you have quotes from multiple insurers, a structured comparison is far more reliable than a gut feel. Here’s a method that works.
Step one: standardise the limits. Adjust every quote to the same limit of indemnity. If you need $10 million public liability, that’s your baseline. A $5 million quote isn’t comparable.
Step two: list the inclusions. For each quote, write down what’s included: policy type, limit, optional extensions, and any notable sub-limits. A simple list in plain language is enough.
Step three: identify the trade-specific exclusions. For each quote, note the exclusions that matter for your work. If you do roofing and a quote excludes work above two storeys, flag it — that quote isn’t suitable.
Step four: note the excess structure. Record the standard excess and any specific excesses for theft, property damage, or other claim types. Two quotes with the same premium can have different excess profiles.
Step five: compare the premium. Only after you’ve aligned the coverage details does the premium comparison become meaningful. At this point, you’re comparing value — adequate cover at a competitive price — rather than just price.
Step six: verify insurer credentials. Check that each insurer holds an Australian Financial Services Licence. You can look this up on the ASIC register. An unlicensed insurer may not be enforceable in Australia, and you won’t have access to the Australian Financial Complaints Authority if a dispute arises.
After You Choose a Policy
Once you’ve compared quotes and selected a policy, there are a few things to do that protect you over the life of the cover.
Read the full PDS. Yes, it’s long, but it’s the contract between you and the insurer. Know what it says. Focus on the exclusions, conditions, and claims process. Fifteen minutes now saves you from discovering a gap at claim time.
Set a renewal reminder. Diarise the expiry date. A lapsed policy is a gap in cover, and if a claim falls in that gap, you’re uninsured. Start the quoting process for renewal at least two weeks before expiry so you have time to compare properly.
Keep your certificate of currency accessible. Save a digital copy on your phone. Keep a printed copy in your vehicle or site office. When a principal contractor or client asks to see it — and they will — you should be able to produce it within seconds.
Notify your insurer of material changes. If your business changes — new types of work, significantly increased revenue, interstate expansion — tell your insurer. Failing to disclose material changes can affect your cover if a claim arises from the changed circumstances.
Know the claims process before you need it. The steps are usually: make the site safe, don’t admit liability, don’t make offers, take photos and detailed notes, and notify your insurer as soon as possible. Having these steps clear in your mind before an incident means you’ll follow them correctly under pressure.
Frequently Asked Questions
How many quotes should I get before choosing?
Three to five quotes is generally enough to understand the market range for your business. Fewer than three and you don’t have a meaningful comparison. More than five and the marginal value drops off — you’ll see the same range of premiums and coverage options repeating. The key isn’t the number of quotes but the quality of your comparison. Five quotes you’ve analysed properly beats ten you’ve glanced at.
Can I negotiate the premium on a quote?
Sometimes, but less often than you might think. Insurer premiums are based on actuarial models, not haggling. What you can do is ask whether any discounts apply — a no-claim bonus, a safety management discount, a bundling discount for multiple policies. You can also ask how adjusting the excess or changing optional extensions affects the premium. These are conversations about the structure of the cover, not about bargaining down a price.
What if one quote is dramatically cheaper than all the others?
It’s almost certainly cheaper because it provides less cover — a lower limit, a higher excess, a restrictive sub-limit, or an exclusion you haven’t noticed. Investigate the difference before you accept it. Ask the insurer to explain why their quote is lower. If they can’t give you a clear answer, treat the cheap quote with healthy suspicion. No insurer is in the business of giving away cover below cost.
Should I bundle all my insurance with one provider or buy separately?
Bundling can be cheaper and simpler — one renewal date, one point of contact, often a multi-policy discount. But it’s not always the best value. A bundled package might include tools cover with a per-item sub-limit that doesn’t work for you, or contract works with a maximum contract value that caps below your typical projects. Compare the bundled price against the sum of standalone quotes, and check that the bundled cover limits and sub-limits match what you actually need. The convenience of bundling isn’t worth accepting inadequate cover.
How often should I re-compare my insurance?
Annually, at every renewal. Even if you’re happy with your current insurer, getting comparative quotes each year keeps the market working for you. Your current insurer knows they’re your incumbent and may allow your premium to drift up over time. A quick annual comparison tells you whether your renewal premium is still competitive or whether it’s time to move.
What’s the biggest mistake builders make when comparing quotes?
Focusing exclusively on the premium and ignoring what the policy actually covers. A quote’s price tells you nothing about whether the policy will respond when you need it. The builder who chooses the cheapest quote without reading the exclusions is the builder who discovers their policy is useless at the worst possible moment. The right question isn’t “which quote is cheapest?” It’s “which quote gives me adequate cover at a fair price?”
Disclosure: This article provides general information only and does not take into account your individual circumstances. Insurance products are subject to terms, conditions, limits, and exclusions. You should read the Product Disclosure Statement (PDS) and target market determination (TMD) for any policy before making a purchase decision. Buildercover.au is an independent affiliate site that may earn a commission if you purchase insurance through a linked provider, such as BizCover. This does not affect the price you pay. For advice tailored to your situation, speak to a qualified insurance broker or financial adviser.