Measurement Training Courses by RDM

RDM is committed to educating the real estate community on measurement methods. Over the years we’ve provided structured classes to brokers at such places as Newmark, CBRE, and Colliers.

Topics covered will include space allocation on a given floor, the efficiency of a floor plate, and the differences between REBNY (Real Estate Board of New York) and BOMA (Building Owners and Managers Association) measurement standards.

An overview of the course is provided below. If you have interest in this activity, reach out to Blake Grosch at or 212-213-8190.

Space Allocation
Generally speaking a floor is divided into usable, floor common, and non-rentable space. Usable space is the area that a tenant uses for their activities; common space is the area that a tenant shares with another tenant on a multi-tenant floor; and non-rentable space includes stair wells that provide access to the entire building, elevator shafts, mechanical shafts, and building common areas.

Floor Plate Efficiency and Loss Factors
Floor efficiency is affected by the sizes of mechanical rooms, corridors, electrical closets, and bathrooms. Further by the configuration of the core, columns, thickness of the exterior walls, amongst others. Loss factors may need to be capped on an inefficient multi-tenant floor in order to bring them down to market standards.

The REBNY method measures to the outside surface of a wall, includes corridor walls as tenant USF, deducts building common areas, and utilizes a market loss factor to determine RSF. BOMA instead measures to the inside surface of the exterior wall, excludes corridor walls, and includes building common areas which are apportioned to each floor and generates the BOMA loss factor.