A model for estimating indoor air quality in commercial buildings will be developed by combining existing indoor air measurement, product emission and ventilation/filtration knowledge into a practical model for estimating the indoor air quality of rooms/spaces over time so as to provide an air quality profile of indoor environments. The capabilities of the model will be demonstrated by industry partners implementing the model as a beta-tested prototype using dimensional and other data for selected representative materials from a 3D CAD model of a building design and characteristics of typical ventilation systems.