---
title: "Class B — Class A Atlas glossary"
description: "Mid-tier office space — older or less prestigious than Class A, typically at lower rents."
canonical: https://classa.info/glossary/class-b
pageType: glossary
lastUpdated: 2026-04-01T00:00:00.000Z
license: "CC BY 4.0 with attribution to Class A Atlas (https://classa.info)."
---

> Mid-tier office space — older or less prestigious than Class A, typically at lower rents.

## TL;DR

- Mid-tier office space — older or less prestigious than Class A, typically at lower rents.
- Class B office is functional, often older or in secondary submarkets, with mid-grade MEP and amenities.

# Class B

*Asset class · Global*

## Short definition

Mid-tier office space — older or less prestigious than [Class A](/glossary/class-a), typically at lower rents.

## Full definition

Class B office is functional, often older or in secondary submarkets, with mid-grade MEP and amenities. Rents typically run 30-60% below Class A in the same submarket. Class B has been the most repriced segment of this cycle as flight-to-quality has accelerated.

## Why this matters for Class A leasing

Class B is part of the asset class 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.

## See also

- [Class A](/glossary/class-a)
- [Class C](/glossary/class-c)

---

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