Post-completion insurance
Post-completion insurance (more usually known as latent defects insurance) provides cover for latent defects. These are failures in design, workmanship or materials that may not become apparent until many years after practical completion of the project and long after the end of the defects’ liability period.
This form of insurance provides cover for new building work or for work on existing buildings. It is seen as providing more complete cover for defects than other methods (such as collateral warranties) which may require proof of breach of contract. Any party with an interest in the property (eg owner or developer) can be the insured (policy holder), but it can also be the funder or an incoming tenant who has repair obligations under a lease.
Available for a period of between 8-12 years from the date of final certificate or practical completion, post-completion insurance typically covers defects in the structure and weatherproof envelope of the building – but no other defects.
Whether an insurer decides to provide cover will depend on whether they are confident and satisfied regarding the original construction. However, when cover is provided, it usually involves significant premiums. For example, in the case of a contract works value of £2,500,000, a latent defects policy could cost around £25,000 to £30,000; when bearing in mind the excess is normally 1%, ie £25,000 of the sum insured, the first £50,000 (in this example) of any claim will have to be met by the insured.
[edit] Related articles on Designing Buildings Wiki
- Building Users' Insurance Against Latent Defects.
- Collateral warranties.
- Contractors' all-risk insurance.
- Contract works insurance.
- Decennial liability.
- Design liability.
- Directors and officers insurance.
- Employer's liability insurance.
- Excepted risk.
- Flood insurance.
- Future of construction insurance.
- Indemnity to principals.
- Integrated project insurance.
- JCT Clause 6.5.1 Insurance.
- Joint names policy.
- Latent defects insurance.
- Legal indemnities.
- Legal indemnity insurance.
- Non-negligent liability insurance.
- Performance bond.
- Professional Indemnity Insurance.
- Public liability insurance.
- Residual value insurance.
- Reverse premium.
- Specified perils.
- Subcontractor default insurance (SDI).
- Warranty.
Featured articles and news
We're expanding our collaborative mission by launching DB Intelligence, an exclusive market research advisory panel. Built environment professionals can now get paid to share their expertise on industry trends, products and services.
Panel members receive direct financial incentives for participating in research projects like short surveys, 1-2-1 interviews and focus groups. Register today to shape the future of the construction sector.
Planning condition discharge in England and Wales
A brief exoplanation from a building compliance expert, with further links.
Overheating guidance and tools for building designers
Guidance for dealing with element of building fabric control that have increasing importance.
Shading for housing, a design guide
From the Good Homes Alliance and British Blind and Shutter Association.
UK Standard Skills Classification (SSC)
A shared framework for describing skills needs.
Social media ban consultation comes to close
CIOB urges UK Government to consider social media’s role in careers guidance in ban debate.
The latest of eight Skills England apprenticeship units
The addition of battery manufacturing welcomed by ECA with a warning about the risks of fast-tracked apprenticeship units.
Building Control Independent Panel final report
A precis of a key report led by Dame Hackitt with full recommendations and link to the government response.
Building Safety recap April, 2026
A short and longer run-through of the month, with links to further information and sources.
CIAT May 2026 briefing.
From medieval scribes to modern word art.
ECA welcomes crackdown on late payment and push for clean energy, whilst CIOB seek fixed cladding removal timeframes.
Cyber Security in the Built Environment
Protecting projects, data, and digital assets: A CIOB Academy TIS.
Managing competence in the built environment
ITFG publishes new industry guide on how to meet the ICC principles.
The UK's campaign to reduce noise pollution: Mythbusting, articles and topic guides.




















