# Building sector global emissions and efficiency

> Developing situation record from CLSTR: https://clstr.news/situations/building-sector-global-emissions-and-efficiency
> Updated: 2026-10-31T04:30:00.000Z. Sources: 2. Developments: 2.

The building and construction sector is identified as a major driver of global environmental impact, responsible for significant portions of CO2 emissions and material extraction. While some data indicates the sector accounts for approximately 39 percent of global CO2 emissions, other reports from the United Nations Environment Programme suggest the figure is 34 percent, potentially rising to 37 percent when including materials like cement and steel.

To mitigate these impacts, there is an increasing focus on building envelope insulation and energy efficiency. Beyond traditional thermal performance, modern requirements for insulation systems are expanding to include fire safety, environmental stress resistance, and indoor comfort. Experts suggest that prioritizing the rehabilitation of existing structures over new construction may help reduce energy consumption and preserve biodiversity.

## Timeline

### 2026-10-31: Building sector identified as major driver of global emissions

The building sector accounts for up to 37 percent of global greenhouse gas emissions, prompting calls for increased rehabilitation and energy efficiency to meet climate goals.

2 sources. https://clstr.news/cluster/building-sector-identified-as-major-driver-of-global-emissions

### 2026-10-16: Building insulation requirements expand beyond thermal performance

The construction sector accounts for 39% of global CO2 emissions. Experts suggest building insulation must evolve beyond thermal metrics to include fire safety, durability, and design flexibility.

2 sources. https://clstr.news/cluster/building-insulation-requirements-expand-beyond-thermal-performance

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Cite as: Building sector global emissions and efficiency. CLSTR, https://clstr.news/situations/building-sector-global-emissions-and-efficiency