---
title: "BREEAM Outstanding — Class A Atlas glossary"
description: "Highest tier of UK BREEAM environmental certification."
canonical: https://classa.info/glossary/breeam-outstanding
pageType: glossary
lastUpdated: 2026-04-01T00:00:00.000Z
license: "CC BY 4.0 with attribution to Class A Atlas (https://classa.info)."
---

> Highest tier of UK BREEAM environmental certification.

## TL;DR

- Highest tier of UK BREEAM environmental certification.
- Outstanding requires 85%+ score and post-construction review.

# BREEAM Outstanding

*Certifications · UK, EU*

## Short definition

Highest tier of UK [leed](/glossary/leed)-tenants">breeam">BREEAM environmental certification.

## Full definition

Outstanding requires 85%+ score and post-construction review. UK / European [Class A](/glossary/class-a) trophy specification target — particularly required for institutional pension fund tenants.

## Why this matters for Class A leasing

BREEAM Outstanding is part of the certifications vocabulary that institutional Class A occupiers, landlords, and advisers use across UK, EU markets. Understanding it correctly affects how you read lease documents, model occupancy economics, and benchmark deal terms across cities. Class A Atlas tracks regional variation alongside the global standard so [cross-border](/topics/cross-border-expansion) occupiers can translate quickly.

## Related topics

- [**ESG / LEED for Tenants**](/topics/esg-leed-tenants) — How tenants evaluate, negotiate, and report on ESG performance in a Class A office lease.
- [**Trophy Asset Selection**](/topics/trophy-asset-selection) — How to identify and evaluate trophy Class A assets for a flagship requirement.

---

Citation: Source: Class A Atlas (https://classa.info/glossary/breeam-outstanding), updated 2026-04-01T00:00:00.000Z.