According to BPI Technical Standards, what is required for a blueprint evaluation?

For a blueprint evaluation in accordance with BPI Technical Standards, it is essential that the evaluation be field verified based on actual observed conditions. This requirement ensures that the evaluation reflects the true state of the building as it stands, rather than assumptions or theoretical models. Field verification allows analysts to assess various factors such as insulation levels, air leakage, mechanical systems, and other critical attributes that influence energy efficiency and overall building performance. By aligning assessments with real-world conditions, evaluations can lead to more accurate recommendations for improvements and ensure that any interventions are effective and relevant to the specific building in question.

The other options do not meet the rigorous standards set by BPI. For instance, a quick review based on previous data may overlook current issues or changes that have occurred over time. Requiring that blueprints be created by an architect does not guarantee that the evaluation considers actual building conditions, as architectural plans are often idealized and may not account for on-site realities. Finally, basing an evaluation on hypothetical conditions can lead to inaccurate conclusions that do not resonate with what is practicably encountered within the building's environment. Thus, field verification is crucial in producing reliable and relevant evaluations.