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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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Stairs in multi-tenant industrial

May 30, 2011

Hello I have questions related to stairs for second floors/mezzanines in multi-tenant industrial buildings.

.1 How do you treat staircases related to tenant mezzanines? Are they major vertical penetrations or tenant area? These are stairs used by only one tenant and required for exiting.

.2 Do you differentiate between base building mezzanines and mezzanines built by the tenant, in relation to how stairs are treated?

Thank you.

Adam Fingret
Extreme Measures Inc.
May 31, 2011


1. If the stair is part of the base building, then it is normally deducted from tenant and rentable area. MVPs built for the private use of a tenant (usually by the tenant) are generally not considered MVPs.

2. You need to determine whether the mezzanine is a "rentable mezzanine" and such determination should be expressly agreed to by the lessor and lessee. The standard does not comment on "who" built the mezzanine. It is either Rentable, Stand Alone, or Storage. Stairs are treated the same as above.

May 31, 2011

If the mezzanine is not "rentable" (not part of the lease area), is the landlord not at a disadvantage by having the stairs excluded from the ground floor area as MVPs?

Adam Fingret
Extreme Measures Inc.
May 31, 2011

Yes, the landlord would lose ground floor rentable area in that scenario.

BOMA is updating the industrial standard in the coming year. The update will likely address stairs and mezzanines (among other things) with greater specificity.

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