Building and construction
Construction Company Insurance
for UK contractors, developers and specialist subcontractors
Construction company insurance packages the liability, works, plant and tools cover a building contractor needs into one policy, rather than leaving you to buy each part separately and hope they meet in the middle.
- Liability, works, plant and tools
- Contractors, developers and subcontractors
- Design and build cover available
Quick answerConstruction company insurance is a combined policy for a UK building contractor or developer. It brings employers and public liability, contract works, plant, tools and business interruption together in one arrangement, and adds professional indemnity where you take design responsibility. Tell MyMoneyComparison.com about the company once, and specialist UK brokers can come back with quotes to compare.
At a glance
Construction Company Insurance at a Glance
The short answers to the questions construction companies ask most.
| Question | Quick answer |
|---|---|
| What is actually in it? | Two liability sections, the work in progress, the plant, and your income if the yard goes down. |
| Is any of it compulsory? | The employers liability section is, from your first employee. Public liability is not required by UK law. |
| So why does everyone hold it? | Because the gate does not open without it. Main contractors, public frameworks and commercial clients all ask. |
| Where do subcontractors sit? | Labour-only gangs normally ride on your own cover. Bona fide firms answer for themselves. |
| Do I need professional indemnity? | Only if a contract has made the design yours. Design and build always does. |
| Is the half-built job insured? | Under contract works, up to practical completion. Whether you or the client arranges it depends on the contract. |
| What limits will I be asked for? | Employers liability is fixed by law at £5m. The rest follows the main contract, which usually asks for more than you would pick. |
| What moves the price? | Turnover and its shape, payroll, subcontractor spend, how high and deep you go, and your losses. |
The basics
What Is Construction Company Insurance?
Construction company insurance is the arrangement a UK building contractor or developer puts behind a live site: the people on it, the work in progress, the plant standing on it and the obligations the main contract imposes before anyone is allowed through the gate.
There is no single product with that name. What brokers place is a commercial combined policy assembled section by section, which is why a groundworks firm and a fit-out contractor of the same turnover rarely end up holding the same document. Two answers shape most of it: how much of the programme your own people deliver, and whether anything you sign makes you responsible for the design.
Why contractors buy it combined
- One renewal covering the people, the works, the plant and the vans
- Liability limits that meet what main contractors and frameworks demand
- Subcontractors declared and rated properly rather than assumed
- Professional indemnity alongside, where you take design responsibility
Built section by section
A contractor schedule, typically
- Employers liabilityYour own staff and the labour you directAlways
- Public liabilityThird parties and anything you do not ownAlways
- Contract worksWork in progress up to practical completionMost
- Plant and toolsStanding on site, in the yard, in transitMost
- Professional indemnityOnly where a contract puts design on youSome
How it works
How Does Construction Company Insurance Work?
The cover is quoted on estimates, runs for twelve months and is squared up against the real figures afterwards. Both your wageroll and what you pay subcontractors are declared at the start and adjusted once the year is known.
Describe the work and the labour
Your turnover by type of work, your own wageroll, and what you pay labour-only and bona fide subcontractors. That last split does a lot of the rating.
Size the cover to the contracts
Read the limits out of the main contracts you expect to sign, put contract works at the value of your biggest single job, and value plant at what it would cost to replace today rather than what you paid.
Declare changes as they happen
A bigger contract, a first design and build job or a move into a new sector all change the risk. Telling the insurer costs nothing.
Wageroll and subcontractor figures are estimates that get adjusted later, so there is nothing to gain from understating them. Where the shortfall was honest, an insurer will commonly reduce the claim in proportion to it, so paying eighty per cent of the premium can mean receiving eighty per cent of the claim. Where the figures were understated on purpose, the whole policy can go.
What it covers
What Does Construction Company Insurance Cover?
Two liability sections carry the weight, one for the people working for you and one for everybody else. Around them sit the work in progress, the plant, the trading loss if your own premises go down, and design cover where a contract has made the design yours.
Employers liability
Anyone hurt or made ill while working under your control, which on most sites takes in the labour-only gangs as well as your payroll. Set out at employers liability insurance.
Public liability
The neighbour, the passer-by, the third party property you damaged getting the job done. It is the evidence of cover a main contractor wants before you mobilise, and it is explained at public liability insurance. Note that the building you are actually working in sits outside it as standard.
Contract works
Everything you have put into the job so far, from groundworks up, while it is still your responsibility. There is a page of its own at contractors all risks insurance.
Plant, tools and equipment
Excavators, dumpers, tower scaffolds and hand tools, owned or hired in, usually with a cap on any one item.
Professional indemnity
The pure design failure, where nothing was damaged but the answer was wrong. Liability sections were never written to reach that.
Business interruption
The trading loss when your own yard, offices or stores burn or flood.
Cover worth asking about
Site security and theft
Site theft is one of the most reliable losses in the sector. Read the security conditions attached to the cover before you need them.
Fleet
Vans, tippers and lorries sit on their own policy, at fleet insurance or our guide for construction companies.
Cyber and computer
Estimating, design and project systems: cyber insurance.
Exclusions
What Isn’t Covered by Construction Company Insurance?
It does not pay to redo your own defective work, and it does not cover design errors unless you hold professional indemnity. Heat work usually carries conditions you must follow, and existing structures need adding. Wordings differ, so read your own schedule.
Redoing your own defective work
If a wall is built badly, rebuilding that wall is your cost. The damage it causes to the rest of the job is usually covered, and that is normally the bigger number.
Design errors, without PI
Where the build is sound but the specification behind it was not, the claim is against your judgement rather than your workmanship. Only the design section reaches that.
Heat work, unless you follow the conditions
Policies commonly make cover conditional on fire precautions whenever heat is applied. Meeting those conditions is what keeps the cover live.
Delay and liquidated damages
Your liability for running late is not insured. If a fire sets the programme back, the policy rebuilds what burned and leaves you to argue the extension of time and the damages that follow.
The building you are working on
Existing structures on refurbishment work are excluded unless added. Ours on that sits with civil engineering insurance.
Work outside what you described
A first design and build award, a job several times bigger than anything on the proposal form, a step into an unfamiliar sector. Each changes the risk the insurer agreed to carry, and none announces itself before a claim.
Worth checking if you do design and build. Professional indemnity for fire safety work has been heavily restricted across the UK market in recent years, and renewals are often not like for like. Ask what yours now says.
Business types
What Kind of Construction Business Can Be Covered?
Main contractors, house builders and developers, commercial contractors, design and build firms, refurbishment and fit-out specialists, groundworkers and specialist subcontractors. What changes between them is the subcontractor declaration and whether design responsibility is involved.
Main building contractors
Running the whole job with subcontractors under you, where declarations matter as much as sums insured.
House builders and developers
Building to sell, usually with a lender making cover a condition of funding.
Commercial building contractors
Offices, retail, industrial and public sector work, to a main contractor or direct to a client.
Design and build contractors
Taking design responsibility as well as building, which needs professional indemnity alongside.
See professional indemnityRefurbishment and fit-out
Working inside buildings that already exist and are often still occupied.
Groundworks and civils contractors
Excavation, drainage and foundations, where depth and services drive the questions.
See civil engineering insuranceSpecialist subcontractors
Roofing, cladding, steelwork, glazing and the rest, working under someone else main contract.
Trade subcontractors
Electrical, mechanical and building services packages on larger jobs.
See electrical contractors insuranceTwo boundaries worth knowing. If you fabricate steelwork or assemblies in your own workshop as well as installing them, that part of the business is rated more like engineering company insurance than like site work. And if you take design responsibility on paper, the design risk belongs to professional indemnity, not to the liability sections described here.
Who it’s for
Who Needs Construction Company Insurance?
UK construction companies with employees and subcontractors: main contractors, developers, design and build firms, refurbishment and fit-out specialists, groundworkers and specialist subcontractors. It is written for companies rather than one-person businesses.
Companies employing site staff
Employers liability is compulsory, and it is the section the Health and Safety Executive can ask to see.
Firms using labour-only subcontractors
They usually sit on your employers liability and in your wageroll, whatever the invoice says.
Subcontractors working under main contracts
Where the subcontract sets your limits and asks for evidence before you start on site.
Developers building to sell
Where a lender or warranty provider makes cover a condition of drawdown.
Design and build contractors
Carrying design risk as well as build risk, which needs two different policies to work together.
Firms with real plant values
Owned and hired plant adds up faster than most contractors expect, and sites are where it goes missing.
Keep expired employers liability certificates rather than only the current one. Construction disease claims from dust, noise and vibration surface decades after the exposure, and the policy that answers is the one that was on risk when the work was done, not the one you hold today.
The split that decides your premium
Labour-Only vs Bona Fide Subcontractors
Labour-only subcontractors work under your direction and are usually treated by the policy as your employees, so they sit in your wageroll. Bona fide subcontractors are independent businesses with their own insurance, declared by number and by annual payment.
| Labour-only | Bona fide | |
|---|---|---|
| Who they are | Working under your direction, with your materials | An independent business with its own materials and staff |
| Which cover applies | Your employers liability treats them as employees | Their own liability policy answers first |
| How they are declared | In your wageroll, alongside your own staff | By number and by what you pay them each year |
| What you must check | Nothing extra, they are yours | Their certificate, and usually to a minimum limit set by your policy |
| If you get it wrong | Wageroll understated, so the claim can be cut | No certificate on file, and their claim can become yours |
The last row is where companies get caught. Many policies make it a condition that you obtain and keep evidence that bona fide subcontractors hold their own public liability to a stated minimum. Without it, insurers will normally re-rate that firm as labour-only, charging the extra premium at adjustment and leaving your own policy to answer for what they did.
Pricing
How Much Does Construction Company Insurance Cost?
Nobody can quote a construction company from the trade name alone. The rating follows turnover and which sectors it came from, payroll and subcontractor spend, how high and how deep the work goes, whether design sits with you, the limits your contracts demand and five years of losses.
How the work gets done
- TurnoverAnd the shape of it, trade by trade.
- Your own payrollSite, supervisory and office, separately.
- Labour-only spendHead count and what you pay them.
- Bona fide spendPayments, plus whose certificates you hold.
Where the work happens
- Sectors workedHousing, commercial, industrial, public.
- Height and depthHow far up the scaffold, how far down the dig.
- Design on your paperAny, some, or none at all.
- Biggest single jobThe largest contract in the coming year.
What you are asking for
- Indemnity limitsRead out of the contracts, not guessed.
- Works sum insuredEnough for the largest job in progress.
- Plant scheduleReplacement values, owned and hired.
- Loss recordFive years, section by section.
You will not find a price on this page. We could find no independent UK body gathering construction premiums, which leaves the figures quoted online to individual brokers summarising their own customers, and those books generally lean towards very small accounts. A contractor with a payroll and a subcontractor ledger is not the business those averages describe.
Before you start
What Information Do I Need for a Construction Insurance Quote?
Insurers need turnover split by sector, wageroll and subcontractor payments, the height and depth you work at, any design responsibility, your limits and largest contract, plant and tools values, and five years of claims.
About the business
- Turnover for three years, split by sector
- Estimated wageroll by category
- Labour-only and bona fide subcontractor numbers and payments
- Five years of claims
The work you do
- The sector split as percentages
- Maximum working height and excavation depth
- Any design or design and build responsibility
- Your largest single contract value
Limits and assets
- Liability limits your contracts require
- Contract works sum insured
- Plant and tools values, owned and hired
- Certificates on file for bona fide subcontractors
Compare with MyMoneyComparison.com
How to Compare Construction Insurance Quotes
Check how subcontractors are treated, compare the limits against what your contracts demand, and read the conditions attached to the cover. Two quotes at the same price can be worth very different amounts once those are answered.
Check the subcontractor basis
How your policy treats labour-only and bona fide labour is where two quotes most often differ without the price showing it.
Read the limits out of the contracts first
Buying beneath what the main contract specifies is not a saving. It is a job you cannot start.
Look at the conditions, not just the cover
Heat work precautions, site security and subcontractor certificates are what decide whether a claim actually pays.
Tell us about the company once and specialist UK brokers can come back to you. We are an introducer rather than a broker, so we do not sell the policy or recommend one. Our editorial policy explains how we work.
Cutting costs
How Can I Reduce the Cost of Construction Company Insurance?
An accurate sector split, subcontractor certificates on file, secure plant storage and properly run hot works are what move the price most. Declaring honest wageroll figures and reviewing the excess also help.
Get the sector split right
A vague description gets rated cautiously. An accurate split between commercial, residential and industrial usually gets rated better.
Collect subcontractor certificates
It is usually a policy condition anyway, and a tidy file is evidence an underwriter can see.
Secure plant and the compound
Immobilisers, marking and locked storage. Repeat plant losses are what push a renewal up.
Run hot works properly
Permits, clearance distances and a watch afterwards. It is a condition on most policies and a fire is the loss that changes your rate for years.
Declare accurate figures
Understating wageroll saves little and can cut a claim in proportion. Estimates get adjusted anyway.
Review the excess
Carrying more of the small, frequent losses yourself can bring the premium down noticeably.
Your own yard, offices and stores sit on a separate policy. Ours is commercial property insurance.
Jargon buster
Construction Insurance Jargon, Explained
The terms that come up most when you read a contractor policy schedule.
- Public liability
- The section that answers to third parties and to property outside your own.
- Employers liability
- The one section UK law makes you buy, covering anyone working under your control.
- Contract works
- Value built into the job so far, together with the materials waiting to go in.
- Labour-only subcontractor
- Hired hands you supervise and supply, rated as though they were payroll.
- Bona fide subcontractor
- A trading firm that brings its own people, materials and policy.
- Wageroll
- Declared earnings by category, the figure employers liability is priced from.
- Hot works
- Any work applying heat on site, which most policies attach fire precautions to.
- Excess
- The first part of any claim that you pay yourself.
Anything not listed here is covered in our plain English jargon guide.
Why MyMoneyComparison.com
Comparing Specialist Construction Cover
MyMoneyComparison.com is an FCA-authorised UK comparison service that introduces companies to specialist brokers. We do not sell insurance and we do not give advice: the broker you choose arranges the policy. Comparing is free and there is no obligation.
Form for the whole company
Describe the business, the work it takes on and the cover you need once instead of repeating yourself to each broker.
Advice given
We are an introducer, not a broker. We do not sell policies and we do not recommend one. Read our editorial policy.
Authorised and regulated
MyMoneyComparison.com Ltd appears on the FCA register under FRN 916241.
Comparing since
A UK company since 2013, working with specialist brokers across the country.
FAQs
Construction Company Insurance FAQs
The questions UK contractors and developers ask most.
What is construction company insurance?
It is a combined commercial policy for a UK building contractor or developer, bringing employers and public liability, contract works, plant, tools and business interruption into one arrangement. Where the company takes design responsibility, professional indemnity is added alongside, because liability cover does not reach a drawing that is wrong.
What does construction company insurance cover?
The core is employers liability and public liability. Most contractors add contract works for the job itself, plant and tools, and business interruption for their own premises. Design and build firms add professional indemnity. Vans, tippers and lorries sit on a separate motor or fleet policy.
Is construction insurance a legal requirement?
Only partly. Employers liability is compulsory at £5m once you employ anyone, with narrow exemptions, the practical one being a limited company whose only employee owns half or more of the shares. Motor cover is required for vehicles on the road. Public liability is not required by UK law at all: it is main contractors, frameworks and commercial clients who insist on it.
How much public liability cover do I need?
Enough to satisfy the contracts you work under, which usually means more than you would choose for yourself. Main contractors and public sector frameworks commonly set a minimum before you can start on site, so check the subcontract or framework terms before you buy rather than afterwards. Employers liability is the exception: the law sets that at £5m, though the Health and Safety Executive notes that policies are commonly issued at £10m.
Are subcontractors covered by my policy?
It depends which kind. Labour-only subcontractors work under your direction and are usually treated by the policy as your employees, so they sit on your employers liability and in your wageroll. Bona fide subcontractors are independent firms carrying their own cover, declared by number and annual payment.
Do I have to check my subcontractors insurance?
Where the policy says so, yes, and it is a condition rather than good practice. Many wordings require you to obtain and keep written evidence that bona fide subcontractors hold their own public liability to a stated minimum, and to produce it when a claim arises. A missing certificate becomes your problem.
What happens if I under-declare my wageroll?
Where the mistake was honest, usually a proportionate reduction rather than a refusal: pay eighty per cent of the premium you owed and an insurer may pay eighty per cent of the claim. Understating the figures deliberately is a different matter and can cost you the policy altogether. They are estimates that get adjusted anyway, so there is nothing to gain.
Does the policy pay to redo my own defective work?
No. Rebuilding the wall you built badly is your cost to carry. What the policy normally does cover is the damage that defective work causes to the rest of the job or to other property, which is usually the far bigger number. Read your own exclusion, because wordings differ.
Do I need professional indemnity as a contractor?
Yes, wherever a contract puts the design on your side of the line. The liability sections were built around physical harm, so they engage when something breaks or someone is hurt. A specification that was simply the wrong answer breaks nothing, yet still costs the client the price of putting it right, and only the design section reaches that cost.
Has professional indemnity for fire safety work changed?
Yes, and it is worth checking what you actually hold. Cover for fire safety and cladding related work has been heavily restricted across the UK market in recent years, and many policies now carry limits, higher excesses or exclusions that did not exist before. Do not assume your renewal is like for like.
What are hot works conditions?
Terms making cover conditional on specified fire precautions whenever heat is applied on site, which commonly includes grinding and cutting as well as flame. They typically cover clearing combustibles, having extinguishers to hand and keeping a watch after the work. Not following them is a common reason a fire claim is argued about.
Do I need contract works cover?
If you are building something that could be damaged before handover, yes. Contract works covers the job itself and materials on site while the work is under way. Who is required to arrange it depends on the contract, so read the insurance section before assuming the duty falls on you.
Is the existing building covered on refurbishment work?
Not as standard. Cover applies to the works you are carrying out, and the structure that was already there is excluded unless it is added. On refurbishment and fit-out that is an important gap, and who arranges it usually depends on which insurance option the contract uses.
Should I keep old employers liability certificates?
Yes. There has been no legal duty to retain expired certificates for many years, but in construction it matters more than most sectors. Dust, noise and vibration claims surface decades after the exposure, and the policy that answers is the one on risk when the work was done.
What is the penalty for not having employers liability insurance?
A fine of up to £2,500 for any day on which you are without suitable cover, and up to £1,000 for failing to display the certificate or produce it to an inspector. Note that it is per day, not per employee per day, which is a widely repeated error.
How much does construction company insurance cost?
We deliberately quote no figure, because we could find nothing reliable to quote: no independent UK body gathers construction premiums, and the averages in circulation are individual brokers describing their own small-account books. Your own number turns on turnover and its mix, payroll, subcontractor spend, working height and depth, design exposure and your loss record.
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About this page
This page explains what construction company insurance is, what it covers, who needs it and what moves the price, for UK contractors and developers with employees and subcontractors rather than one-person businesses. It is general information rather than advice. Policies differ, so read your own schedule and put the questions here to your broker. For the works themselves see contractors all risks insurance, for ground and infrastructure work see civil engineering insurance, and for electrical packages see electrical contractors insurance.
How we researched this page
- A live contractor combined schedule with its subcontractor declaration endorsements, and two employers liability employee definitions from named UK insurers
- Two contractors all risks wordings, for the contract works and plant sections
- A current design and construct professional indemnity wording, for how design cover is now restricted
- Health and Safety Executive guidance on compulsory employers liability insurance
We publish no example premiums, because no UK body collects and publishes pricing for this sector. Where wordings differ we say they differ rather than picking one and calling it the market. Three things in wide circulation are corrected here: that public liability is a legal requirement, that a policy will pay to redo work that was done badly, and that the employers liability penalty is charged per employee per day when it is per day.