A building can be evaluated on its energy class and may even have a score with respect to a class acoustics.

You can measure and evaluate the acoustic performance of a building in relation to the standard UNI 11367 that it doesn't applied to all residential buildings, excluding agricultural buildings, craft and trade, or to concert halls and churches.

The standard proposes a classification system based on sound measurements made ​​at the end of work. The designer can provides an estimate, but the measurement and testing ensure a more realistic performance.

The estimate can be made on the materials used through a simplified or detailed model, or using data provided by the manufacturers of the materials themselves, but reliability also depends on the realization of the work and the final results.

The class will depend on the acoustic noise transmitted by air across several units, noise impact or perceived impact sound generated within the residential areas and in different units, the facade of the plant in continuous operation (lifts, drains plumbing, bathrooms, toilets and faucets) and those in batch operation (heating, ventilation and air conditioning).

The sound is transmitted not only transversely to the wall of the building, but also laterally and behaves in a different way depending on the material that meets and its frequency. UNI 11367 provides four different classes of acoustic efficiency, ranging from class 1, which identifies the highest level (quieter) to class 4 which is the lowest (louder) should be considered that, although the level of performance "Basic" is the third class, the majority of italian buildings currently exist does not even reach the fourth class. Improving the class could increase not only the acoustic comfort inside a house, but also the value of a property according to the acoustic comfort that it can guarantee.