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This help desk is a free resource intended for discussion purposes only. Neither BOMA, its chapters, affiliates, or Extreme Measures Inc.® are responsible for the information, comments or opinions expressed herein. For complete information, refer to the official publications of the standards themselves.

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Brock Priebe
Priebe Drafting and Design Inc.
November 2, 2021

We have a corridor separating a north and south tenant space. The corridor leads to a lobby at one end and an exit stair at the other end. In the future, it is possible this corridor could be removed and one tenant takes the entire space. So would you classify this corridor as Floor Service Area rather than Building Service Area? I would consider it as FSA because its inclusion (or exclusion) has no impact on other storeys. That being said, I've also seen mention that egress corridors could be BSA.

Any clarification or rule of thumb is appreciated. Thanks

David Fingret
Extreme Measures Inc.
November 3, 2021

Hi Brock,

The corridor sounds like Floor Service Area to me, especially considering that it could become part of the Tenant Area in the future. I assume therefore, that the egress that you mention is for the floor tenants and not for the building as a whole.


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