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Building and Construction Authority

Early Contractor Involvement (ECI)

Learn about Early Contractor Involvement (ECI) procurement models for public sector construction projects. Discover D&B, DDB, and DBB-ECI approaches to improve project outcomes.

Last updated 14 March 2026

What is Early Contractor Involvement?

Three ECI Models for public sector projects

Infographic comparing Design & Build, DDB, and DBB-ECI models for public sector projects.

When to adopt ECI?

How to adopt ECI?

Next steps

Step-by-step infographic outlining how to assess, select, and implement an ECI model.

Additional resources