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  • Self Build Insurance from Protek - Site Insurance & Structural Warranty - On Line Quote
  • Self Build Insurance from Protek - Site Insurance & Structural Warranty - On Line Quote

New Build | Conversion | Renovation | Extension

Your project, covered your way



Extension Insurance

Carrying out an extension project brings an increased risk of loss or damage because not only are you carrying out new works but you have an increased exposure in the form of the structure that’s being extended – which is usually your house. Extension insurance is crucial as home insurance does not normally adequately cover the risks that are inherent in an extension project.

How extension insurance works

Extension Insurance from - essential if you are extending your home.

Extension Insurance from – essential if you are extending your home.

Extension insurance needs to cater for both the existing elements of the property that’s being extended and all the new extension works that go into the process. The existing structure is usually your house – so if the property collapses while creating a new opening for example, the extension insurance will cover it and completely replaces the requirement for buildings insurance, which is not suitable. All the works, including any temporary works, materials, plant tools and equipment need to be covered. Public liability and employers liability is automatically included to ensure you are adequately protected.

Extension insurance needs to be in place from the moment you plan to start works on the property and should continue to the point the project is completed and taken into full use.

Help choosing the extension insurance cover you need

Our staff have many years’ experience in helping people get the right cover in place for their projects. We have designed our extension insurance product to be inherently flexible both in terms of product options and choice of cover duration whilst being comprehensive and competitive.

If you are utilising a contractor to carry out the works, issues may arise as to who is contractually responsible for insuring the existing structure because the contractors insurance will not cover it. Extension Insurance can solve that issue quite simply.

Why you should have Extension Insurance

It’s not just serious losses like a fire or flood that you need to be protected against, claims for theft of materials, plant tools and equipment can become quite expensive if not insured. A collapse whilst knocking through to create an opening may have disastrous consequences for your house. Vandals gaining access to the part completed project will cause a huge amount of damage and destruction even if they don’t steal anything and the remoteness of a site just adds to the issue. You may have neighbours in close proximity and accidental damage to their property can become an expensive and emotional problem. 

Building sites are hazardous places of work – injury sustained by contractors, friends or visitors to site – whether invited or not – are all likely to become your responsibility and claims for injury are usually very large and can result in prosecution.

Essentially it’s just not worth leaving your project uninsured. Protek’s extension insurance covers you for all these eventualities.

Party Wall Agreements

If your are proposing to carry out work within three or six meters of a party or boundary wall your will invariably have to consider your liability under the Party Wall Act 1996. Under the terms of the Act, your neighbour has a right to be compensated for any loss or damage caused by your relevant works. So, should you cause damage to the neighbouring property inadvertently, public liability does not provide protection as it is a foreseeable loss. However, cover for your contractual liability can be included under Protek Extension Insurance as an option on any project where you have evidence of a party wall agreement in place.

Never run out of cover

Protek recognises that projects don’t always run to schedule which is why we have flexible cover periods on offer and the ability to purchase short term policies to effectively extend cover as required.

Legal expenses

You can optionally include legal expenses (professional fees insurance) when arranging your site insurance cover. It provides cover for contractual disputes with the contractors, trades and professionals involved with your project so that if things aren’t going to plan because you are in dispute you can gain legal help and where the prospect of success is good, assistance in seeking resolution. Its important to bear in mind that you must have contracts evidenced in writing. Advice on arranging contracts is available here.

10 year structural warranty

Don’t forget you will also need to consider a structural warranty, which covers the new works and consequential damage to the property for 10 years against defects in the design, workmanship, materials and components causing major damage. For more information see our structural warranty page.



Contact Us

Protek Group Limited,
Unit 2, Enterprise Way,
TN8 6HF.

Tel: 0333 456 8030

Protek Self Build are a member of NaCSBA
Protek Warranty is a UK Finance Associate



Protek Group Limited is an Appointed Representative of Stackhouse Poland Limited who is Authorised and Regulated by the Financial Conduct Authority (Firm Reference Number 309340). This information may be checked on the FCA’s Register by visiting their website or contacting them on 0845 6061234. CLICK HERE TO VIEW OUR PRIVACY AND COOKIE POLICY