---
title: "BOMA measurement standard — Class A Atlas glossary"
description: "US trade-body standard for measuring office floor areas."
canonical: https://classa.info/glossary/boma-standard
pageType: glossary
lastUpdated: 2026-04-01T00:00:00.000Z
license: "CC BY 4.0 with attribution to Class A Atlas (https://classa.info)."
---

> US trade-body standard for measuring office floor areas.

## TL;DR

- US trade-body standard for measuring office floor areas.
- BOMA 2017 Office Standard governs how rentable, usable, and gross areas are calculated.

# BOMA measurement standard

*Measurement · US*

## Short definition

US trade-body standard for measuring office floor areas.

## Full definition

BOMA 2017 Office Standard governs how rentable, usable, and gross areas are calculated. The reference standard for almost all [Class A](/glossary/class-a) US Class A leases. Verify the BOMA version in the lease — older versions favour landlords.

## Why this matters for Class A leasing

BOMA measurement standard is part of the measurement vocabulary that institutional Class A occupiers, landlords, and advisers use across US markets. Understanding it correctly affects how you read lease documents, model occupancy economics, and benchmark deal terms across cities. Class A Atlas tracks the US definition alongside the global standard so [cross-border](/topics/cross-border-expansion) occupiers can translate quickly.

## Related topics

- [**Cross-border Expansion**](/topics/cross-border-expansion) — How to run a coordinated Class A office search across multiple geographies.

---

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