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Eptura Knowledge Center

Mapping IFMA and BOMA Conventions

Space / Space Inventory

Many sites measure and account for their space according to guidelines developed by BOMA (Building Owners and Managers Association) and IFMA (International Facility Management Association). These organizations provide detailed conventions on the areas in a building and how to measure and internally charge departments for their use of space.

By taking advantage of the room category features of the Archibus space management system, sites following IFMA and BOMA conventions can account for all area standards that are defined by BOMA and IFMA.

Recall, the Super Category field of the Room Categories table can have a value of:

  • Vertical Penetration
  • Service Area
  • Usable Area
  • Other Area

By assigning room categories (which have super-categories of the above values) to the areas in your building, you can account for IFMA-defined and BOMA-defined areas using the Archibus system.

For information on BOMA methods, Configure BOMA Standard Versions.

Mapping of BOMA and IFMA Standards to Room Categories


You must create room categories to represent the areas that are tracked at your site.

BOMA 2017 includes some categories that match to IPMS (International Property Measurement Standards) standards, which are outlined in the below table. The following are suggested room categories for mapping to IFMA and BOMA standards.

IFMA or BOMA Room Category Occupiable? Super Category Calculations Used In Archibus Equivalent Room Category
Gross Building n/a n/a n/a n/a
Gross Measured n/a n/a n/a n/a
Building Exterior Gross  n/a n/a n/a n/a
Building Interior Gross  n/a n/a n/a n/a
Vertical Penetration No Vertical Penetration  All Totals  VERT
Boundary Area (IPMS 2)       n/a  n/a  n/a  Not a category, but captured as Internal Gross Area; compatible with IMPS 2 only when using BOMA 2017 calculations.
Building Core No     No Vertical Penetration All Totals VERT
Void Area  No Vertical Penetration All Totals VERT
Occupant Void Area  No Vertical Penetration All Totals VERT
Major Vertical Penetration  No Vertical Penetration All Totals VERT
Service Area   No Service Area All Totals SERV 
Amenity Area   Yes Usable Area All Totals Any Value
Floor Common or Floor Service No Service Area   All Totals SERV, Prorated to Floor
Building Common or Building Service  No   Service Area All Totals SERV, Prorated to Building
Primary Circulation  No   Service Area All Totals SERV
Base Building Circulation  No   Service Area All Totals BASE BL CIRC 
Perimeter Encroachment  No   Service Area All Totals Any Value, Prorated to Floor 
Interior Encroachment  No   Service Area All Totals Any Value, Prorated to Floor 
Occupant Area  Yes Usable Area All Totals Any Value 
Office Area  Yes Usable Area All Totals Any Value 
Storage Area  No Usable Area All Totals Any Value 
Tenant Area  Yes Usable Area All Totals Any Value 

Tenant Area (IPMS 3)    

Yes Usable Area or Service Area All Totals Any Value, but not prorated, and not TENANT ANCIL (this is compatible with BOMA 2017, Method A only)
Tenant Ancillary Area         No         Usable Area  All Totals TENANT ANCIL
Restricted Area  No         Usable Area  All Totals Any Value
Secondary Circulation  No         Usable Area  All Totals Any Value, Prorated to Floor
Interstitial Area  No  Other Area  No Totals  n/a 
Building Projections  No  Other Area  No Totals  n/a 
Excluded Area Rentable Exclusions No Other Area  No  Other Area No Totals, or All Totals if using BOMA 2017  n/a 
Restricted Headroom No Other Area  No  Other Area No Totals  n/a 
Interior Parking No Other Area  No  Other Area No Totals, or All Totals if using BOMA 2017 n/a