Building assessment

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Building assessment tools are basically multi-criteria analysis methods. Their goal is to assign a concise score to a building’s overall performance starting from a set of criteria (assessment entries) that deal with environmental, social and economic issues. The score is computed combining the value of indicators through a normalization and aggregation process.

Assessment procedure

The assessment procedure is articulated in three main steps:

  1. characterization: building performances are quantified through indicators with regard to each criterion;
  2. normalization: indicator values are dimensioned and rescaled in a score;
  3. aggregation: normalized scores are combined to produce a final concise score.

Functional equivalent of a building

The results of assessment of buildings at any life cycle stage have to be compared only on the base of their functional equivalency. The functional equivalent of a building should be referred to (based on EN 15643-1):

  • required functions: type and use
  • area / volume
  • pattern of use (e.g. occupancy)
  • location of the building
  • required service life

Differences in the assessment of building and neighbourhood performance

In each country/region the assessment of building and neighbourhood performance is different. The various differences appear in:

  • levels/ambitions for the building/neighbourhood performance,
  • overseeing organisations,
  • assessment methodologies,
  • tendering products and procedures,
  • costs structures,
  • and more.

CESBA gives guidelines to harmonize the assessment approaches through the CESBA principles, methods, performance issues and indicators.

References

CESBA guide