Completion bond
A completion bond, also known completion guarantee is a type of surety bond issued by an insurance company or a bank to guarantee satisfactory completion of a project by a contractor according to the terms and conditions of the contract. If the contractor fails to do so, the bond provides financial protection to the client (usually the project owner). If the contractor defaults or fails to complete the project, the bond issuer (the surety) steps in to cover the costs needed to complete the project, up to the bond amount. This caan help maintain trust and stability in the industry, ensuring that projects are completed as agreed and financial risks are managed effectively.
The contractor applies for the bond through a surety company, providing financial statements, project details, and other necessary documentation. The surety evaluates the contractor’s ability to complete the project, including their financial stability, experience, and track record. If approved, the surety issues the bond, usually for a fee or premium paid by the contractor.
If the contractor fails to meet the contractual obligations, the project owner can file a claim against the bond. The surety investigates the claim to determine its validity. If the claim is valid, the surety may provide financial compensation or arrange for the completion of the project through another contractor.
For project owners, completion bonds mitigate the risk of contractor default, ensuring project completion or financial compensation. For contractors, having a completion bond can enhance credibility and trust with clients, demonstrating financial stability and reliability. In some cases, particularly for public projects, obtaining a completion bond may be a legal requirement.
[edit] Related articles on Designing Buildings
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.