---
title: "Occupancy density — Class A Atlas glossary"
description: "Square feet of usable space per seat."
canonical: https://classa.info/glossary/occupancy-density
pageType: glossary
lastUpdated: 2026-04-01T00:00:00.000Z
license: "CC BY 4.0 with attribution to Class A Atlas (https://classa.info)."
---

> Square feet of usable space per seat.

## TL;DR

- Square feet of usable space per seat.
- Ranges from 60–80 sf/seat (dense AI tenants, trading floors) to 250+ sf/seat (executive floors, law-firm partner offices).

# Occupancy density

*Strategy · Global*

## Short definition

Square feet of usable space per seat.

## Full definition

Ranges from 60–80 sf/seat (dense AI tenants, trading floors) to 250+ sf/seat (executive floors, law-firm partner offices). [Class A](/glossary/class-a) institutional baseline: 120–180 sf/seat. Drives TI cost, HVAC sizing, and life-safety calculations.

## Why this matters for Class A leasing

Occupancy [density](/glossary/density) is part of the strategy vocabulary that institutional Class A occupiers, landlords, and advisers use across Global 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.

---

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