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Glossary Definition

20/100 Rule

20/100 Rule

Heuristic that homes face yearly events damaging up to 20% of value plus a once-per-decade event causing 75–100% loss.

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The 20/100 Climate Damage Rule: A Builder's Playbook

The 20/100 climate damage rule reframes home design: yearly losses up to 20% of value plus a once-a-decade event up to 100%. A builder's playbook.