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Tenants and investors

Class A vs Class B office buildings

Compare office building classes as local market shorthand, then verify the features and performance that matter.

Updated 2026-09-12
Fast answerBOMA describes building classes using factors such as rent, finishes, systems, amenities, location and market perception. The comparison is relative to the local market.

Translate the label into evidence

Ask what supports the classification: systems, modernization, management, accessibility, elevators, amenities, energy performance and tenant profile.

Compare the premises, not only the building

A strong suite in one class can fit better than an inefficient or over-improved suite in another. Test the floorplate against the same program.

Normalize the cost

Compare complete occupancy cost, tenant capital and service level. A lower asking rent can be offset by improvement needs or operating exposure.

Match class to business need

Define which building qualities support recruiting, clients, resilience, accessibility and brand, then pay only for features that create value.

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Evidence boundary: office availability and quoted economics change. Confirm current premises, authority, area, costs, permitted use and documents for the specific transaction. Read the methodology.

Questions about this guide

Scope and evidence boundaries.

What is the purpose of the class a vs class b office buildings?

Compare office building classes as local market shorthand, then verify the features and performance that matter.

Does this guide replace professional advice?

No. Use it to organize questions and evidence, then obtain qualified professional advice where the decision requires it.