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.
Commercial tenants typically pay rent based on calculated area figures stated in their lease or contract with the landlord. Disputes over these calculations can arise for various reasons, often stemming from outdated space measurements, a lack of formal documentation, poorly defined area definitions, or misunderstandings regarding the method of calculation. While most disputes can be resolved in good faith, some tenants may take legal action against landlords for misrepresenting the area and seek damages retroactively.
When area calculations appear to be outdated, undocumented, or otherwise uncertain, tenant confidence in their leasing figures can be called into question. This is especially problematic if the landlord cannot provide third-party floor plans, area analysis charts, or area certificates to support their stated leasing areas. Without such documentation, tenants may become suspicious of the figures they are paying rent on and might attempt to measure the space themselves or hire independent firms to verify the area. This loss of trust can lead to disputes and, in some cases, legal action to reclaim rent.
Definitions for rentable area, gross leasable area, or other important figures are often written directly into leases. In some cases, these definitions are well articulated, while in others they are vague, overly simplistic, or absent. Some leases reference industry measurement standards like BOMA, ensuring clarity and consistency, whereas others omit formal area definitions altogether. This can pose a significant liability for landlords, as ambiguities in lease area definitions can lead to disputes, with tenants questioning the landlord and the methodology used. Clear, concise lease language that references modern industry standards is the best defense to minimize risk and ensure both parties are aligned.
While industry standards such as those established by BOMA provide a valuable framework for measuring and calculating areas, their application can be complex and easily misunderstood by non-experts. BOMA Standards involve detailed guidelines for measuring to specific wall surfaces, including or excluding certain spaces, and pro-rata allocations of common areas. Tenants often overlook these complexities and attempt to estimate area using overly simplistic methods—such as counting ceiling tiles, floor tiles, or applying basic area approximations. Such approaches can result in unfounded disputes over area, underscoring the importance of landlords maintaining strong, current as-built documentation to support their position and minimize contested claims.
BOMA standards do provide some guidelines with regard to area disputes. They indicate that a 2% difference between two independent measurements is acceptable, and anything over 2% should be resolved by a third party. Although the 2% rule is specific to BOMA, it has become the broadly accepted industry standard for measurement discrepancies.
Landlords with a proactive due diligence program and well-maintained, third-party documentation—such as as-built floor plans, calculation charts, and area certificates—can prevent most area disputes from arising. However, if a dispute does occur, hiring an unbiased professional measurement company like Extreme Measures can help clarify and resolve the issue before the tenant takes legal action.