# Usable square feet (USF)

> The actual interior area a tenant can occupy.

**Canonical URL:** https://classa.info/glossary/usable-square-feet
**Page type:** glossary
**Last updated:** 2026-04-01T00:00:00.000Z
**License:** CC BY 4.0 with attribution to Class A Atlas (https://classa.info).

## TL;DR
- The actual interior area a tenant can occupy.
- USF excludes building common areas and is the figure used for space planning.

## Key facts
- **category**: Measurement
- **regionScope**: US

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