> For the complete documentation index, see [llms.txt](https://carbonze.gitbook.io/carbonze/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://carbonze.gitbook.io/carbonze/measure/3.8.-upstream-leased-assets-leased-buildings.md).

# 3.8. Upstream Leased Assets (Leased Buildings)

Scope 3, Category 8: Upstream Leased Assets (Leased Buildings) 

Scope 3, Category 8 is composed of the components: Leased buildings, leased vehicles. Leased buildings includes emissions from the operation of assets that are leased by your company in the reporting year and not already included in the reporting company’s scope 1 or scope 2 inventories. 

Calculating emissions from leased assets is possible 3 different way: 

* Asset-specific method, which involves collecting asset-specific (e.g., site-specific) fuel and energy use data and process and fugitive emissions data or scope 1 and scope 2 emissions data from individual leased assets 
* Lessor-specific method, which involves collecting the scope 1 and scope 2 emissions from lessor(s) and allocating emissions to the relevant leased asset(s) 
* Average data method, which involves estimating emissions for each leased asset, or groups of leased assets, based on average data, such as average emissions per asset type or floor space. 

CarbonZE uses average data method on Leaseed buildings module.