# Guides — Class A Atlas

> Class A Atlas publishes 40 long-form editorial guides on global Class A occupier strategy, updated quarterly.

**Canonical URL:** https://classa.info/guides
**Page type:** guides-index
**Last updated:** 2026-05-29T16:17:29.065Z
**License:** CC BY 4.0 with attribution to Class A Atlas (https://classa.info).

## TL;DR
- How to choose a Class A office: a working framework — A repeatable framework for evaluating premium office space — beyond the brochure rent and the marketing video.
- Negotiating rent-free periods: the playbook — Rent-free is the single most negotiable line item in a Class A deal. Here is how to push it without breaking the deal.
- What is a trophy asset? The five-axis test — The word 'trophy' gets thrown around. Here is the working definition we use and the five tests that separate trophy from prime Class A.
- LEED, BREEAM, NABERS: what tenants actually need to know — Green building ratings now drive measurable rent premiums and corporate disclosure obligations. Here is what to demand.
- Decoding a London lease: FRI, dilapidations, break clauses — A practical primer on UK commercial leases for international tenants — the terms that matter and the traps to avoid.
- APAC leasing conventions: a city-by-city primer — What changes when you cross from a Singapore lease to a Tokyo, Hong Kong, or Sydney one — and how to plan for it.
- How to model occupancy cost per seat — The single most useful normalised number in office economics — how to calculate it and how to use it.
- Lease vs flexible: the real tradeoffs — The Atlas's working framework on when traditional leases beat flex providers and vice versa.

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