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
Government outcome to the late payment consultation, ECA reacts.
IHBC 2025 Gus Astley Student Award winners
Work on the role of hewing in UK historic conservation a win for Jack Parker of Oxford Brookes University.
Future Homes Building Standards and plug-in solar
Parts F and L amendments, the availability of solar panels and industry responses.
How later living housing can help solve the housing crisis
Unlocking homes, unlocking lives.
Preparing safety case reports for HRBs under the BSA
A new practical guide to preparing structural inputs for safety cases and safety case reports published by IStructE.
Male construction workers and prostate cancer
CIOB and Prostate Cancer UK encourage awareness of prostate cancer risks, and what to do about it.
The changed R&D tax landscape for Architects
Specialist gives a recap on tax changes for Research and Development, via the ACA newsletter.
Structured product data as a competitive advantage
NBS explain why accessible product data that works across digital systems is key.
Welsh retrofit workforce assessment
Welsh Government report confirms Wales faces major electrical skills shortage, warns ECA.
A now architectural practice looks back at its concept project for a sustainable oceanic settlement 25 years on.
Copyright and Artificial Intelligence
Government report and back track on copyright opt out for AI training but no clear preferred alternative as yet.
Embedding AI tools into architectural education
Beyond the render: LMU share how student led research is shaping the future of visualisation workflows.
Why document control still fails UK construction projects
A Chartered Quantity Surveyor explains what needs to change and how.
Inspiration for a new 2026 wave of Irish construction professionals.
New planning reforms and Warm Homes Bill
Take centre stage at UK Construction Week London.
A brief run down of changes intentions from April in an onwards.





















