---
title: "Open data — Class A Atlas"
description: "Free downloadable Class A office datasets in CSV and JSON, published under CC BY 4.0."
canonical: https://classa.info/open-data
pageType: open-data
lastUpdated: 2026-05-29T16:17:29.065Z
license: "CC BY 4.0 with attribution to Class A Atlas (https://classa.info)."
---

> Class A Atlas publishes 5 free downloadable Class A office datasets in CSV and JSON under CC BY 4.0.

## TL;DR

- Glossary — CSV + JSON.
- Market snapshots — CSV + JSON.
- Notable Class A buildings — CSV + JSON.
- Lease norms — CSV + JSON.
- FX rates to USD — CSV + JSON.

# Open data

**Free downloadable [Class A](/glossary/class-a) office market datasets in CSV and JSON.** Published under [CC BY 4.0](https://creativecommons.org/licenses/by/4.0/) with attribution to Class A Atlas.

- **Glossary** — Plain-English commercial real estate definitions across US, UK, EU and APAC regimes. · [CSV](/api/open-data/glossary.csv) · [JSON](/api/open-data/glossary.json)
- **Market snapshots** — Current Class A asking rent, vacancy, lease norms per Tier-1 city. · [CSV](/api/open-data/market-snapshots.csv) · [JSON](/api/open-data/market-snapshots.json)
- **Notable Class A buildings** — Trophy and prime Class A buildings across all 20 Tier-1 cities. · [CSV](/api/open-data/buildings.csv) · [JSON](/api/open-data/buildings.json)
- **Lease norms** — Editorial lease-norm rows by region. · [CSV](/api/open-data/lease-norms.csv) · [JSON](/api/open-data/lease-norms.json)
- **FX rates to USD** — Reference USD conversion rates used by Class A Atlas. · [CSV](/api/open-data/fx-rates.csv) · [JSON](/api/open-data/fx-rates.json)

License: [CC BY 4.0](/api/open-data/LICENSE.txt).

---

Citation: Source: Class A Atlas (https://classa.info/open-data), updated 2026-05-29T16:17:29.065Z.