For more than a century, BOMA International has set the standard for measuring buildings. In 1915, BOMA published its first office standard, Standard Method of Floor Measurement. Throughout the years the standard has been revised to reflect the changing needs of the real estate market and the evolution of office building design. Today, BOMA International is the American National Standards Institute (ANSI) secretariat for a suite of area measurement standards.


BOMA Edmonton has compiled the following information on floor measurement standards to assist our members in their research. For more information, please contact usor visit the BOMA International website.



BOMA 2024 FOR OFFICE BUILDINGS: STANDARD METHODS OF MEASUREMENT (ANSI/BOMA Z65.1-2024) is the latest update to the office standard, which has been regularly revised to reflect the changing needs of the commercial real estate market. BOMA’s 2024 Office Standard includes many new enhancements and clarifications to address evolving building designs and tenant amenities.

This standard is intended exclusively for Office Buildings and their associated structures. It is applicable to all types of Office Buildings, regardless of the nature of the businesses they house; including but not limited to, various commercial, medical, institutional, and life science uses. It can be used for single tenant, multi-tenant, or multi-building configurations, and is suitable for measuring new, existing, and proposed Office Buildings. This standard does not include the measurement of public sidewalks, surface parking, landscaping, drainage structures, or other site improvements. The primary purpose of this standard is to calculate Rentable Area, a crucial metric in office leasing. Nevertheless, it also provides area figures useful for space utilization analysis, valuation, benchmarking, and allocating building expenses across different cost centers.



BOMA 2019 for Industrial Buildings: Standard Method of Measurement (ANSI/BOMA Z65.2—2019) is the update to the 2012 Industrial Standard. BOMA first published its Industrial Standard with the Society of Industrial and Office Realtors® in 2001. The Industrial Standard was updated in 2004, 2009 and 2012. The Industrial Standard is intended exclusively for Industrial and Flex Buildings and their associated structures and may be applied to single tenant, multi-tenant or multi-building configurations.

The 2019 Industrial Standard features a single method of measurement. It generates multiple Load Factors for various shared space types, such as Building Service Area, Floor Service Area, Inter-Building Area, etc. These Load Factors are successively applied to Occupant Areas on a pro-rata basis.



Published in 2023, this Multi-Family and Hospitality Standard features a Gross Area Method of measurement and a Net Area Method of measurement, with the Net Area Method providing two distinct levels of measurement data, known as the Inside Net Method and the Centerline Net Method. Furthermore, this measurement standard accommodates a Partial Measurement or an Overall Measurement. The 2023 For Multi-Family and Hospitality Properties Standard includes improved text and illustrations throughout, helpful hints, and an easier step-by-step layout.

Key Updates are the inclusion of:

  • hospitality properties (e.g. hotels)
  • outdoor amenity areas
  • retail areas
  • and the option of determining proportionate share allocations of certain Non-Living Areas



BOMA 2020 for Retail Properties: Standard Method of Measurement (ANSI/BOMA Z65.5—2020) is the update to the 2010 Retail Standard and is intended exclusively for Retail Properties and their associated structures and may be applied to single tenant, multi-tenant or multi-building configurations. The primary objectives of the 2020 Retail Standard are to promote an unambiguous framework for determining the areas of Retail Properties with a strong focus on Rentable Area calculations; to facilitate transparency and clear communication of retail measurement concepts among all participants in the commercial real estate industry; to allow a comparison of values on the basis of a clearly understood and generally agreed upon method of measurement; and to align concepts and measurement methodologies with the International Property Measurement Standards: Retail Buildings (2019) document.



BOMA 2021 for Mixed-Use Properties: Standard Method of Measurement (ANSI/BOMA Z65.6—2021) is the update to the 2012 Mixed-Use Standard and is intended exclusively for Mixed-Use Properties and their associated structures. The standard is chiefly designed to generate Mixed-Use Common Area allocations on a proportionate basis according to the relative sizes of each Mixed-Use Component for integration with applicable single-use BOMA Standards. It also produces area figures which may be of interest to those examining space utilization, valuation, benchmarking and the allocation of building expenses to various cost centers.

To establish the proportionate allocation of mixed-use common areas to the mixed-use components, the 2021 Mixed-Use Standard relies upon the BOMA 2018 Gross Areas Standard (ANSI/BOMA Z65.3—2018) as its foundation. Once established, the apportioned mixed-use common areas may be applied to a compatible single-use BOMA Standard or non-BOMA methodology that corresponds to each mixed-use component.



MeasureLine Ltd.
Mark Dickie
163 Deer Ridge Drive, St. Albert, AB

Urban Measure Inc.
Cass Smith
4034, 16th Street SW, Calgary, AB