Catchments

Each building in propella.office includes a Catchment polygon that surrounds the building (the blue jagged shape in Figure 1 below).  This Catchment area for each building is a 7-minute walking isochrone - this is the calculated maximum distance that can be walked in any direction from the building, taking into account all geographic features in the area that will impede walking, such as water, major roads, restricted areas, etc.

Figure 1: The derived Catchment for 275 Kent Street Sydney (blue polygon), the 7-minute walking area that surrounds the building

The Catchment represents the local retail trade area for the building.  Through analysis of the movement of CBD workers within the local vicinity of their home office, propella.ai has determined that a 7-minute walking catchment represents that the maximum distance that workers will typically walk for their everyday retail needs (e.g. coffees, lunch, pharmacy visits, etc.).  That worker movement analysed across dozens of office buildings within the Melbourne and Sydney CBDs, demonstrated that the density of worker mobile events drops off beyond the 7-minute distance on average.  Further details on this analysis of worker movement around CBD office buildings can be in this blog.

The Catchment for each office building forms the basis for the area that is assessed and scored within the Retail Analytics and Public Amenity functions within the propella.office app.  The app allows users to understand the types of volume of retail and public amenity within that 7-minute walking catchment around the building, and how that amenity is ranked against the Catchments from all other office buildings within that CBD area.