--- title: "Guides — Class A Atlas" description: "In-depth editorial guides on global Class A office leasing." canonical: https://classa.info/guides pageType: guides-index 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 40 long-form editorial guides on global Class A occupier strategy, updated quarterly. ## 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. # Guides ## Long-form editorial Long-form editorial coverage of global [Class A](/glossary/class-a) occupier strategy. Each guide is research-led, brand-neutral, and updated quarterly by the Class A Atlas Editorial Desk. - [**How to choose a Class A office: a working framework**](/guides/how-to-choose-class-a-office) — A repeatable framework for evaluating premium office space — beyond the brochure rent and the marketing video. - [**Negotiating rent-free periods: the playbook**](/guides/negotiating-rent-free-periods) — 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**](/guides/trophy-asset-explained) — 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**](/guides/esg-leed-breeam-for-tenants) — 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**](/guides/uk-lease-glossary-fri-explained) — 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**](/guides/apac-leasing-conventions) — 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**](/guides/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**](/guides/lease-vs-flexible-the-real-tradeoffs) — The Atlas's working framework on when traditional leases beat flex providers and vice versa. - [**Tenant improvement allowances: the working guide**](/guides/us-tenant-improvement-allowances-explained) — TI is the largest contractual subsidy in any office lease. Here is how to size, structure, and protect it. - [**Subleases and assignments: when, how, and at what cost**](/guides/subleases-and-assignments) — The two principal exit routes from a traditional office lease — and what makes them work or fail. - [**Fit-out budgeting: a five-tier framework**](/guides/fit-out-budgeting-the-five-tier-framework) — How to size and stage a workplace [fit-out](/topics/fit-out-capex)">fit-out budget — from basic [Cat B](/glossary/cat-b) to trophy. - [**Cross-border expansion: a Class A search playbook**](/guides/geo-expansion-and-the-class-a-search) — How to run a coordinated Class A office search across multiple geographies without losing leverage or schedule. - [**Class A office snapshot: New York**](/guides/class-a-snapshot-new-york) — An operator's brief on Class A leasing in New York — submarkets, tenant profile, headline economics, and 12-month outlook. - [**Class A office snapshot: London**](/guides/class-a-snapshot-london) — An operator's brief on Class A leasing in London — submarkets, tenant profile, headline economics, and 12-month outlook. - [**Class A office snapshot: San Francisco**](/guides/class-a-snapshot-san-francisco) — An operator's brief on Class A leasing in San Francisco — submarkets, tenant profile, headline economics, and 12-month outlook. - [**Class A office snapshot: Tokyo**](/guides/class-a-snapshot-tokyo) — An operator's brief on Class A leasing in Tokyo — submarkets, tenant profile, headline economics, and 12-month outlook. - [**Class A office snapshot: Singapore**](/guides/class-a-snapshot-singapore) — An operator's brief on Class A leasing in Singapore — submarkets, tenant profile, headline economics, and 12-month outlook. - [**Class A office snapshot: Hong Kong**](/guides/class-a-snapshot-hong-kong) — An operator's brief on Class A leasing in Hong Kong — submarkets, tenant profile, headline economics, and 12-month outlook. - [**Class A office snapshot: Paris**](/guides/class-a-snapshot-paris) — An operator's brief on Class A leasing in Paris — submarkets, tenant profile, headline economics, and 12-month outlook. - [**Class A office snapshot: Frankfurt**](/guides/class-a-snapshot-frankfurt) — An operator's brief on Class A leasing in Frankfurt — submarkets, tenant profile, headline economics, and 12-month outlook. - [**Class A office snapshot: Sydney**](/guides/class-a-snapshot-sydney) — An operator's brief on Class A leasing in Sydney — submarkets, tenant profile, headline economics, and 12-month outlook. - [**Class A office snapshot: Toronto**](/guides/class-a-snapshot-toronto) — An operator's brief on Class A leasing in Toronto — submarkets, tenant profile, headline economics, and 12-month outlook. - [**Class A office snapshot: Chicago**](/guides/class-a-snapshot-chicago) — An operator's brief on Class A leasing in Chicago — submarkets, tenant profile, headline economics, and 12-month outlook. - [**Class A office snapshot: Boston**](/guides/class-a-snapshot-boston) — An operator's brief on Class A leasing in Boston — submarkets, tenant profile, headline economics, and 12-month outlook. - [**Class A office snapshot: Los Angeles**](/guides/class-a-snapshot-los-angeles) — An operator's brief on Class A leasing in Los Angeles — submarkets, tenant profile, headline economics, and 12-month outlook. - [**Class A office snapshot: Amsterdam**](/guides/class-a-snapshot-amsterdam) — An operator's brief on Class A leasing in Amsterdam — submarkets, tenant profile, headline economics, and 12-month outlook. - [**Class A office snapshot: Dubai**](/guides/class-a-snapshot-dubai) — An operator's brief on Class A leasing in Dubai — submarkets, tenant profile, headline economics, and 12-month outlook. - [**Class A office snapshot: Mumbai**](/guides/class-a-snapshot-mumbai) — An operator's brief on Class A leasing in Mumbai — submarkets, tenant profile, headline economics, and 12-month outlook. - [**Class A office snapshot: Shanghai**](/guides/class-a-snapshot-shanghai) — An operator's brief on Class A leasing in Shanghai — submarkets, tenant profile, headline economics, and 12-month outlook. - [**Class A office snapshot: Seoul**](/guides/class-a-snapshot-seoul) — An operator's brief on Class A leasing in Seoul — submarkets, tenant profile, headline economics, and 12-month outlook. - [**AI tenants and the Class A demand picture**](/guides/ai-tenants-and-class-a-demand) — How frontier AI labs and platform AI tenants are reshaping Class A demand in gateway markets. - [**ESG mandates and tenant filtering**](/guides/esg-mandates-and-tenant-filtering) — How institutional tenant ESG requirements are reshaping Class A landlord capex and leasing strategy. - [**Subleases and the Class A bid stack**](/guides/subleases-and-the-class-a-bid-stack) — How [sublease](/topics/sublease-strategy)">sublease availability has reshaped the post-2022 Class A bid stack and how to think about it as a tenant. - [**The Class A lease renewal playbook**](/guides/lease-renewal-playbook) — How to approach a Class A [renewal](/topics/lease-renewal-strategy) — timing, leverage, and the small set of mistakes that cost the most. - [**The Class A amenity arms race**](/guides/office-amenity-arms-race) — What the trophy amenity programme looks like in 2026 — and which features actually drive tenant retention. - [**Occupier portfolio strategy in 2026**](/guides/occupier-portfolio-strategy-2026) — How institutional occupiers are sizing, locating, and structuring Class A portfolios for the post-hybrid era. - [**Capital markets in Class A: 2026 view**](/guides/capital-markets-class-a-2026) — Where institutional capital is allocating across Class A office in 2026 — and what is structurally distressed. - [**Engaging a tenant-rep broker: what good looks like**](/guides/tenant-rep-broker-engagement) — A working framework for selecting and engaging a tenant-rep broker for a Class A search. - [**UK rent review playbook**](/guides/rent-review-playbook-uk) — How to approach a UK upward-only [rent review](/glossary/rent-review) without giving the landlord the entire upside. - [**Fit-out construction in 2026: budget, schedule, risk**](/guides/fit-out-construction-2026) — An updated working view of Class A fit-out construction economics, schedules, and risk allocation. --- Citation: Source: Class A Atlas (https://classa.info/guides), updated 2026-05-29T16:17:29.065Z.