Measurable criteria associated with a space and its surroundings, such as neighborhood quality, traffic congestion, distance from railway station etc. Aspects are qualified by ratings, which indicate how good or bad they are, and by numerical weightings, which indicate their importance.

Aspects and their corresponding ratings and weightings are specified in a profile. A profile’s aspects, together with the aspect’s minimum required score and weightings are then easily compared to the actual scores from bids. This enables a direct comparison to be made and the most suitable bid to be chosen.
Aspects can be divided into categories, which are defined and maintained in Supporting data .