Statistics Zones

A statistics zone is a polygon you draw on the map to report statistics for a part of the site separately from the project total. Use it when you need to see areas, ratios, and unit counts split by neighbourhood, phase, ownership boundary, or any other sub-area. Statistics zones do not affect generation, the site boundary, or any other feature, they only group results.

Each zone appears as its own section in the statistics panel, in addition to the project totals.

Drawing a statistics zone

Select the statistics zone tool and draw a polygon on the map. New zones are named Statistics zone 1, Statistics zone 2 and so on. Click the zone to rename it from the sidebar panel, which also shows its area and perimeter.

Statistics zones can overlap each other and any other feature, including the site boundary, generative zones, parcels, and buildings. Drawing or moving a zone does not change anything else in the scenario.

Converting between zone types

A drawn polygon can be a Site boundary, a Generative zone, or a Statistics zone. The sidebar of any of these features has a segmented control to switch between the three types. The geometry, name, lock state, and visibility are preserved when you switch.

Statistics zones only report statistics. To restrict generation to part of the site, use a generative zone instead.

What each zone reports

For every statistics zone, the panel shows the same three groups as the project total:

• Zone Areas: GFA, GIA, NIA, average unit size, footprint area, open zone area, park area, road area, restricted area, and parking coverage.
• Zone Ratios: FAR, SCR, unit mix percentages (Studio, 1-Bed, 2-Bed, 3-Bed, 4-Bed), units per staircase, and GIA/GFA and NIA/GFA efficiencies.
• Zone Quantities: Unit counts per type, total units, staircases, and average number of floors.

FAR and SCR for a zone use the zone area as the denominator, not the site boundary area.

How objects are assigned to a zone

Two different rules decide what counts inside a zone, and the difference matters:

• Buildings, units, and floors are assigned by building centroid. If a building's centroid sits inside the zone polygon, the whole building counts for that zone. If the centroid sits outside, none of it counts, even if part of the building visually overlaps the zone.
• Roads, parks, restricted areas, and parking use area intersection. Only the portion of the feature that overlaps the zone is counted. A road that crosses a zone boundary contributes proportionally to each side.

This asymmetry is intentional. Discrete objects like apartments cannot be split, so they belong fully to one zone, while continuous surfaces like roads and parking are measured by overlap. Underground parking is excluded from footprint area but its parking spots are still counted by intersection.

If a building's centroid sits inside two overlapping zones, it counts fully in both. This is intentional for phased or layered analysis but can lead to double-counting if you sum zone totals expecting them to equal the project total.

Open zone area

Open zone area is the zone area minus building footprints, roads, parking, parks, and restricted areas inside the zone. It is clamped to zero, so heavily overlapping features will not produce a negative value.

Hiding and locking

Zones can be hidden or locked from the object panel. A hidden zone is not shown on the map but still contributes to the statistics panel. A locked zone cannot be edited or deleted until unlocked.

Filtering the statistics panel

The statistics panel has a Zones selector at the top. Use it to choose which zones to show, or to hide all zones when you only want to see project totals. Site boundaries also appear in this selector when more than one exists, so you can see statistics scoped to each boundary.