Previously the authors have presented a method to accurately predict the vibration performance of resilient sports flooring in existing buildings. The method includes the measurement of the force pulse injected into a building by a heavy weight drop onto resilient sports flooring. This force pulse is combined with an in-situ transfer function to predict in-situ performance. Extensions to the model include predictions over greater distances and multiple structure types. Further work extends the prediction model to include one-third-octave-band sound pressure levels. Finally, an alternative one-third-octave-band methodology will be shown and compared to one-third-octave-band prediction methods suggested by others.