BOMA (ANSI/BOMA Z) is also still used in some marketplaces; primarily in ultra-competitive, downtown core markets where landlords are. BOMA International is providing the following guidance on the Standard Method for. Measuring Floor Area in Office Buildings, BOMA Z, for persons. Today, BOMA International is the secretariat of a suite of measurement standards : Office Buildings: Standard Methods of Measurement (ANSI/BOMA Z

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The drawback is that this method relies on a concept of “imaginary circulation” that can be confusing. There is a standard, a standard and there are different methods for calculating boms, store and industrial areas. The standard uses a spreadsheet that performs these calculations from left to right so that it is easy to follow.

BOMA Floor Measurement Standards-Overview

In the standard, only the first 8 feet up from the finished floor is taken into consideration when determining the dominant portion.

Learn more about asni standard. It may not correspond to the actual circulation on any particular floor. This is the successor to BOMA For some buildings, this will mean a decrease in the rentable area.

BOMA Standards Landing Page

You can call 1 and dial 0 or email support spacedatabase. It is not available online, but can be ordered by phone: The government in Canada leases a great deal of office space. Drawing file containing the layout of a floor or a suite. The following is a presentation that we use to give an overview of BOMA standards for measuring office buildings:.

The BOMA standard is designed so that a landlord is able to charge rent for all the area in a building.


The concept of dominant portion determines whether the area is measured to the glass line or inside wall face at windows along the exterior enclosure. Architectural plans for the property, typically prepared by architects, designers or land surveyors.

BOMA Standards

We need agreed-upon definitions of where measurements should be taken to and how common or shared space should be allocated. This concept can also be used to allocate areas shared by multiple buildings previously known as Campus Area or Complex Common Area. The BOMA standard for measuring office buildings can be a bit confusing.

This is done by grossing up the usable area that a tenant has inside their suite by a factor that accounts for a proportionate share of the noma that the tenant shares with other tenants: Resources Home Services Resources. Common areas are allocated on a floor anssi floor basis.

First the building 6z5 surveyed and drawn up on CAD. It sounds complicated, but it is quite rational and logical. It is still important because area numbers based on this standard are in use on leases today. Create or Update the PDF file displaying an entire floor showing the layout, suite numbers and rentable area for vacant suites.

There are also so minor differences in how area lines are to be determined. A ratio between the total area of the floor and the total usable area within suites on the floor is calculated. To find out more about how we can help you, call or email us: Typically used for space planning, it does not wnsi tenant names or tenant area references.

Vertical penetrations such as elevator shafts and stairwells are subtracted from the area of each floor. Proposed layout of office space within a suite, used to determine suitability for potential tenants.


An example would be a mechanical room that services a specific group of occupants, or to allocate common areas in a more targeted way for floors with multiple cores.

There are some significant changes which in most cases cause the building rentable areas to increase.

The next innovation is to then gross up all the useable space in the building equally. Please consider our entire company as your support team!

Although it is not the only one, the dominant standard that defines how to measure and calculate area in commercial buildings is published by BOMA Building Owners and Managers Association. Also, if a floor corridor configuration was changed, then the gross-up on that floor would change.

They have their own definitions for area that are published online here.

We use a colour coding system that helps you relate the areas on the drawings to the cells in the spreadsheet. We are all here to help. Method B allocates the common areas in the building is a way that results in all the floors having the 6z5 gross-up factor. It provides a definitive procedure for measuring and classifying floor area in buildings for use in facility management, specifying occupant requirements, space planning, and for strategic facility planning.

There is a Method A and a Method B.