BOMA Z65.1 (Standard Method of Measuring Floor Area)

BOMA Z65.1 is a standard guideline used by real estate professionals to measure the rentable floor area of commercial buildings accurately. It specifies how to determine usable space (what tenants can occupy) and rentable space (the total area billed to tenants), including shared areas like hallways and lobbies. The method ensures consistent, fair calculations across buildings, helping landlords, tenants, and investors understand the true size of a space for leasing, valuation, and management purposes. Essentially, it provides a standardized way to measure and compare commercial property sizes reliably.