20 Aug 2026 · 6 min read
GSAS Star Ratings Explained: What Developers Should Target
The star rating is decided by performance across GSAS categories, predicted at design and verified in construction. How to target the right one.
Reviewed by ALAAVATE Technical Leadership · LEED AP BD+C · GSAS-CGP D&B
What the star rating means
GSAS awards developments a star rating from one to six stars. The rating reflects assessed performance across the GSAS categories, including urban connectivity, site, energy, water, materials, indoor environment and management and operations. The higher the rating, the more stringent the performance required.
How the rating is determined
At design stage, the projected rating is assessed against the design documentation and calculations, substantiated by the calculators, studies and reports prepared for GORD. At construction stage, the rating is verified against evidence that the building was delivered as designed, so the final rating is confirmed on real, verified performance.
What rating should you target
The right target balances market expectations, authority requirements, budget and timeline. Higher ratings demand more from the envelope, systems and materials, which affects capital cost. A realistic target, agreed early and priced properly, protects both the programme and the outcome. Your consultant should model the trade-offs before you commit.
One rating, two verifications
Remember that the design rating is a prediction. The construction stage decides the certified outcome. A target is only as safe as the documentation, submittals and site evidence that carry it through the build.
Sources & references
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