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 indoor spaces over time providing 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 data for selected materials from a 3D CAD model of a building design and characteristics of typical ventilation systems.