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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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Single tenant building

George Franceschina
Anderson Mikos Architects
March 28, 2018

I have a current multi-tenant 2 story building MOB which is connected to a hospital.
The MOB is privately owned. the hospital wants the consolidate all the tenant leases to one.
The building owner no considers the building single tenant and is wondering how the RSF is effected.

My question is can the building now be recalculated to increase RSF.

David Fingret
Extreme Measures Inc.
March 29, 2018

Hi George,

Is the Medical Office Building separately owned from the hospital? Usually, BOMA area calculations are separated by ownership. If the entire property is single tenant, you could use the Gross Areas standard (Exterior Gross Area) as the rentable area, as long as all parties agree. This would give you a larger area compared to using the Office Standard.

The Gross Areas standard is probably your best approach since it can be applied to any type of property; whereas, applying the Office Standard to a hospital isn't officially supported. If you are planning on using the Office Standard, I would probably advise only to use it on the MOB portion. If there are areas common to the hospital and MOB, then these would have to be considered as well. There are a couple of approaches, but I would need to see some plans in order to advise you.

Again, I think the Gross Area standard would be your best solution.


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