A construction site shows a brick building with scaffolding, a cement mixer, and various construction materials scattered around.
A construction site shows a brick building with scaffolding, a cement mixer, and various construction materials scattered around.

Building conversion insurance

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From barn conversion insurance to chapel conversion projects

Whether you’re transforming a barn, chapel, school, or industrial building, a conversion project gives you the chance to breathe new life into a unique structure. At Self Build Zone, our building conversion insurance protects your project from unexpected risks, helping you complete your conversion safely and confidently.

Catering for your conversion projects

Converting an existing building often involves structural changes, complex restoration work, and valuable materials. That’s why it’s vital to have the right protection in place.

Our building conversion insurance covers:

  • The existing structure is being converted
  • New works and building materials
  • Plant, tools, and equipment on site
  • Optional cover for residential caravans if you’re living on-site

So, whether you need barn conversion insurance or chapel conversions insurance, Self Build Zone ensures your project is protected from start to finish.

A two-story brick house under construction, with scaffolding around the structure and building materials on the ground.
site insurance & structural warranties extensions and conversions

Cover the scope of your conversion project

Our building conversion insurance provides comprehensive protection for every stage of your project, from the initial construction phase to completion. It covers the existing structure being converted, the new conversion works, and all materials used throughout the build. Additionally, you can obtain insurance for your conversion site, tools, equipment, and even a residential caravan, if that’s what you need.

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0345 230 9874
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How else can conversion insurance help?

Conversion insurance exists to protect the building from damage as a result of building works.

With a Self-Build Zone building conversion policy, you can benefit from:

  • Public liability and employers’ liability – included as standard, protecting you, your family, contractors, and anyone else working on-site.
  • Comprehensive cover for works in progress – protecting materials, structures, and equipment throughout construction.
  • Professional contract templates – through our partnership with ContractStore, we provide easy-to-use, affordable contracts with unlimited use to help prevent disputes between trades.
A new build house with scaffolding around it. The sun is rising in the background.

Why an insured contractor isn’t enough

While your contractor should have their own insurance, it’s often limited to public liability and only active when they’re physically on site. That means your property, materials, and unfinished works may not be covered.

Our conversion insurance gives you peace of mind 24/7, protecting your structure and materials against risks such as fire, vandalism, theft, potential negligence by your builder and more.

Self Build Site Insurance Protection

Does a building or barn conversion need a structural warranty?

A structural warranty is one of the most important steps to protect your investment, covering the cost of repairing or rebuilding if latent defects appear after completion, which can often take years to surface.

Self-Build Zone’s 10-year structural warranty is lender-approved and one of the best ways to protect your project.

Why choose Self Build Zone for building conversion insurance?

Specialists in conversion and renovation insurance for over 20 years
Trusted provider of insurance for barn conversions and complex builds
Customised policies for all types of building conversions
An expert team of 'A' rated insurers with experience across residential and commercial projects

Protect your conversion from day one.

Get a tailored quote for building conversion insurance today with Self Build Zone, and enjoy total reassurance as you bring your vision to life.

FAQs

Home insurance when renovating: am I covered?

It is a common exclusion on most Home Insurance policies.

If you are altering the structure of your home or carrying out renovations that exceed £25,000, the policy will not cover you. You will need an alternative Site Insurance policy.

 

What is Site Insurance?

Site Insurance, also called Self-Build Insurance, is the insurance you need from the moment you start work until completion. Our policies cover new works, existing structures, employers’ liability, public liability, fire, theft, storm damage etc.

When should I take out Site Insurance?

You become responsible for insuring your plot of land as soon as the exchange of contracts has taken place. Site Insurance should be taken out at this point in time to at least cover your liabilities until the construction works begin, at which point the main body of the policy will automatically come into force.

If works are not going to start within 90 days, it would be advisable to take out Land Owners’ Liability cover to cover your Public Liability exposure until works are due to start, at which point Site Insurance should be arranged.

If you have an existing structure and are not going to start within 90 days you would need to arrange Unoccupied Buildings Insurance until the works are due to start, at which time Site Insurance needs to be arranged.

Doesn’t my builder have insurance?

Most builders will have some form of insurance, but this is often not comprehensive enough to cover your whole site. Many builders’ insurance policies have limits which won’t cover the whole cost of your build or your site if they are not on it.

You will also need to prove they have been negligent and pursue them in court at your own expense for a successful claim.

Is Site Insurance the same as a Structural Warranty?

No, Site Insurance covers your project while it is being built. A Structural Warranty covers all new structural works for 10 years from completion.

What does Site Insurance cover?

Site Insurance is necessary to protect your investment when you’re carrying out a renovation, conversion, extension or new build. Our self-build Site Insurance policy covers the new work, existing structure and rest of the site.

It protects against the likes of losses, fire theft, flood, storm damage, vandalism and accidental damage. See the specific project pages for in-depth information on Self-Build Zone’s Site Insurance.

Do you need site insurance?

It is not a legal requirement to have Site Insurance, but you must by law have Employers’ Liability cover, as you will be employing contractors to work on your site. This is included within our policy at the value of £10m as standard.

It is always advisable to think about the worst thing that could happen during the build and think about the financial implications that would have. For example, without insurance, if your new house burnt down a week before you move in, who is going to pay to rebuild it?

How do I make a claim?

If you think you might need to make a claim, please phone our advisors on 0345 230 9874.

There is a claim form to complete, and we operate a 24-hour service number for genuine emergencies for Site Insurance and Warranty. Please see your policy document for excesses.

If you are unsure whether you need to make a claim, please call and you will be advised accordingly. All calls are recorded for legal and training purposes

Do I still need Site Insurance if I’m using a Main Contractor?

It’s important when hiring anyone for your self-build to look at their documentation.

If an employee or contractor claims to have their own insurance, always request a copy of their policy documents to check that their cover is sufficient to cover your project for reinstatement cost and while they are not on site.

What insurance do I need for a self-build?

When doing a self-build you will need:

  • Public Liability to protect you while you just own the plot.
  • Site Insurance when you are about to start works until completion.
  • A Structural Warranty to protect your build for 10 years post completion and allow you to meet the UK lender requirements.
  • Site Insurance and a Structural Warranty should be arranged up to 30 days before you start.

What insurance do I need for building work?

If you are altering the structure of your home, it is often an exclusion on your Building Insurance property.

When you are ready to start works, you need Site Insurance to cover the existing structure and the new works being carried out. On completion you can reinstate your normal home and contents insurance policy.

Do you need Site Insurance?

Site Insurance is a must for anyone building or designing their own home. Your builder’s insurance may not cover the value of your plot and is often very limited in cover.

A Site Insurance policy covers your whole site including: public liability, employers’ liability, existing structure, theft, fire, flood, storm damage, hired plant, equipment etc.

I am using one main contractor from the beginning of the project until completion, so I need Site Insurance?

If your builder only has Public Liability insurance, you are likely going to need your own insurance.

However, if the builder has “Contract Works” insurance they may be covering everything. It is worth obtaining their policy documents to check through the levels of cover etc.

If you hire any tradesman yourself, you will be required to have Employers’ Liability.

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