IS Rating Scheme

IS Rating Scheme


Infrastructure Sustainability Council of Australia (ISCA)

Type(s) of Tool

Rating SystemsProvide quantifiable sustainability ratings and / or certification for projects or assets.


Tools applicable to all sectors

Lifecycle Phase(s)

Project PlanningGeneral strategy for a project’s delivery is developed., Concept DesignTechnical experts broadly outline the project’s basic characteristics., Detailed DesignTechnical experts further elaborate the Concept Design., ConstructionThe asset is constructed in line with design, budget and timeline., Operation and MaintenanceInfrastructure assets are managed and maintained during their use time.

Open Source


Language Availability


Country of Origin


Date of Development





The IS Rating Scheme is Australia and New Zealand’s rating framework to assess the sustainability of the planning, design, construction and operation phases of infrastructure programs, projects, networks and assets. IS evaluates the sustainability performance of the quadruple bottom line (governance, economic, environmental and social) of infrastructure development. Several manuals and resources are available, covering different phases of the infrastructure cycle, being the main ones IS Design & As Built v2.0 and IS Planning v2.0. The total score is calculated based on the points achieved in the different credits. Verification of the assessment result is undertaken by an independent third-party verifier.

Tool Outcome

Based on the score achieved, projects receive a certification (Bronze – Silver – Gold – Platinum – Diamond). The scoring and certification provide a framework for consistent application and evaluation of sustainability in tendering process, help in scoping with risks and foster efficiency, innovation and continuous improvement in the sustainability outcomes from infrastructure.

Sustainability Criteria

Sustainability of projects is assessed across 17 social, governmental, economic and environmental criteria:
– Context
– Leadership & management
– Sustainable procurement
– Resilience
– Innovation
– Options assessment & business case
– Benefits
– Energy & carbon
– Green infrastructure
– Environmental impacts
– Resource efficiency
– Water
– Ecology
– Stakeholder engagement
– Legacy
– Heritage
– Workforce sustainability


Resource Efficiency

Case Studies