Builders insurance that keeps your building projects covered
Builders insurance from a panel of trusted UK insurers
Insure your builders business for liability with zero hassle
Building work carries some of the highest liability risks of any trade. You’re working in clients’ homes and gardens, on commercial sites, in occupied buildings, and around members of the public — often with heavy materials, power tools, and machinery that create real and present dangers on every project. A single incident without the right cover in place could result in a compensation claim that puts your business and your personal finances at serious risk.
At insurd, we’re an FCA-regulated specialist insurance broker with over 50 years of experience arranging public liability insurance for builders and building contractors across the UK. We work with a panel of leading UK insurers to find the right level of cover for your projects — whether you’re a sole trader taking on domestic jobs or a contractor working on larger commercial sites.
24/7 claims service
We’re here for you round the clock when you need us most.
Fairer prices for all
As a specialist insurance broker, we search our panel of leading UK insurers to find the right policy for your building business.
World-class support
You’ll get your own UK-based human to look after you for the duration of your policy.
We use a combination of technology and a wealth of experience to give you unrivalled cover and more affordable public liability insurance prices. Get a builders liability insurance quote today.
What is builders insurance?
Builders insurance is public liability cover specifically designed for the construction industry — covering the risks that arise when you’re working on building projects in clients’ properties, on construction sites, or in any environment where members of the public could be affected by your activities.
The exposure for builders is significant and specific. Debris falling from scaffolding or a roof. A client’s neighbouring property damaged by groundwork vibration or excavation. A member of the public walking past a site and being struck by materials. A client tripping over tools or equipment left in an access route. These are genuine, documented risks that builders face — and without public liability insurance, every claim falls on you personally.
Most clients, from homeowners commissioning a single extension to developers running large residential schemes, require evidence of builders public liability insurance before work can begin. Many specify a minimum of £5 million, and public sector and commercial contracts often require £10 million. A valid certificate of cover is issued instantly and can be shared with clients immediately.
Read our guide to what public liability insurance covers for more detail. For other trades, see our dedicated pages for tradesman insurance, electrician insurance, and plumber insurance.
The benefits of a builders insurance policy
From the tools you use to the people working on-site, being a builder comes with risks. Public liability insurance helps protect your business if someone is injured or their property is damaged because of your work.
Public liability cover for builders:
Personal injury claims
Protects against claims if someone is injured on or near your construction site — a client, neighbour, visitor, or member of the public. Building sites are among the highest-risk environments for personal injury claims, making this cover essential from day one.
Damage to property
Covers costs if your building work accidentally damages someone’s property — a client’s home, a neighbour’s boundary wall, or a third party’s belongings. Construction work creates significant property damage risk, particularly during groundwork, demolition, and structural alterations.
Legal protection
Covers legal defence costs if a claim is brought against your building business, even if it’s unfounded. For builders working on larger projects, even a disputed claim could tie up significant time and legal resource without this protection in place.
* Subject to your chosen level of policy cover and the prevailing policy excess.
Power up your insurance with additional cover for builders
- Employers’ liability insurance: Required by law if you have people working for you. Covers claims from employees who suffer illness or injury due to their work.
- Tools insurance: Covers loss, theft, or damage to your tools. Including hand tools, power tools, and specialist equipment.
- Stock insurance: Protects the supplies you keep in stock for building jobs. Covers theft, damage, or loss, on-site, in a vehicle, or at your premises.
- Contract works insurance: Protects building work in progress if damaged by events like fire, flood, or vandalism. Covers the labour, tools, and materials needed.
How much does builders insurance cost?
This depends on the nature and size of your building business, the level of risk involved and any claims history you might have. The cost of public liability insurance varies based on several factors:
Type of cover
Standard cover starts at £1 million. Most commercial clients, local authorities, and principal contractors require a minimum of £5 million — and many public sector contracts specify £10 million. We’d recommend £5 million as a practical minimum for most building contractors.
Nature of business
The type of building work you carry out is the primary pricing factor. Structural work, demolition and roofing carry higher premiums than internal finishing trades. Builders working on new builds, extensions, or commercial projects face different risks from those doing domestic maintenance and repairs.
Location
Where your building work takes you affects your premium. Builders working in dense urban areas, on occupied sites, or near public spaces carry greater exposure than those working on isolated rural plots. London and major cities typically attract higher premiums.
Business size and turnover
The scale of your building operations, including annual turnover, project values, and the complexity of contracts you take on, directly affects your premium. Accurate turnover declarations ensure you’re not overpaying for a risk profile that doesn’t match your actual operations.
Number of employees
Having employees or regular subcontractors significantly increases your risk exposure. Employers’ liability is a legal requirement the moment you engage anyone to work for you. Always ensure any subcontractors you use have their own public liability cover in place.
Claims history
A clean claims history is your most effective long-term cost reduction tool. Maintaining safe site practices, conducting regular risk assessments, and keeping worksites tidy protects both your clients and your premium at renewal.
How to reduce your builders insurance premium
Beyond the factors above, there are several practical steps that can help reduce your builders insurance costs.
- Maintain safe site practices — Formal risk assessments, documented method statements, tidy worksites, and proper use of protective equipment reduce the likelihood of claims and signal lower risk to insurers.
- Ensure subcontractors have their own cover — Requiring proof of public liability insurance from all subcontractors before they start work reduces your overall risk exposure and protects you against claims arising from their activities.
- Join the Federation of Master Builders — FMB membership demonstrates professional standards and is viewed favourably by insurers. Other relevant bodies include CITB, NHBC, and trade-specific organisations depending on your specialism.
- Declare your activities accurately — If you’ve moved away from higher-risk work such as structural alterations, roofing, or demolition, updating your declaration at renewal reflects the lower risk and reduces your premium.
- Build a clean claims history — Avoiding unnecessary small claims and managing incidents carefully protects your record — your most valuable long-term cost reduction asset.
For more ways to reduce your public liability costs, see our public liability insurance cost guide.
Builders insurance frequently asked questions
When do I need to get builders public liability insurance?
As soon as your building business starts working on site — even for small domestic projects. Construction and building work carries significant risks, and if something goes wrong and someone is injured or their property is damaged, you could face a substantial claim. Many clients and principal contractors will also require proof of cover before work can begin.
Is builders public liability insurance a legal requirement?
No — it isn't a legal requirement in the UK. However, virtually every client, developer, housing association, and local authority will require you to have it before allowing you on site. Without it, you could find yourself unable to secure contracts and personally exposed to claims that could financially devastate your business.
What does builders public liability insurance actually cover?
It covers compensation claims and legal fees arising from injury or property damage caused by your building activities. Common examples include a member of the public being injured by falling debris, a client's neighbouring property being damaged during construction work, or a visitor to the site tripping over materials or equipment. It covers both the compensation payment and your legal costs, even if a claim turns out to be unfounded.
What isn't covered by builders public liability insurance?
Public liability insurance covers claims from members of the public — it doesn't cover claims from your own employees or subcontractors (that's employers' liability), losses caused by professional design errors (you'd need professional indemnity for that), or damage to your own plant, tools, and equipment. Always check your policy wording carefully to understand exactly what's included.
Does builders insurance cover subcontractors working on my site?
Not automatically — subcontractors are typically responsible for their own public liability insurance. However, if you engage labour-only subcontractors, they may be treated as employees in the eyes of your insurer, which could require employers' liability cover. Always ensure any subcontractors you use have their own cover in place and ask for evidence before they start work.
Do I need public liability insurance for small building projects?
Yes — the size of the project doesn't reduce your liability. Even a small domestic renovation can result in a significant claim if a member of the public is injured or property is damaged. Many homeowners also require proof of cover before work begins, regardless of the scale of the project.
What limit of cover should I choose?
Building and construction work carries higher risks than many other trades, so cover levels are important. Standard cover starts at £1 million, but most commercial clients, local authorities, and principal contractors will require a minimum of £5 million or £10 million. We'd recommend £5 million as a practical minimum for most building contractors. Always check your contract requirements before selecting your cover level.
Is public liability insurance tax deductible?
Yes — business insurance is an allowable expense, which means you can deduct the cost when calculating your taxable profit. Make sure you keep your policy documents and receipts as records for HMRC. If you're unsure, speak to your accountant.
Do you provide evidence of cover?
Yes — you'll receive proof of cover instantly when your policy is in place, which you can share with clients and principal contractors straight away. If you also take out employers' liability cover, a Certificate of Employers' Liability will be issued immediately for display at your premises.
Guides for builder business owners
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