Layers
Street type
Construction type
Structure type
Permit points
Active (in progress)
Cleared (completed)
Point size ≈ net units created
Active: permit issued, construction underway or about to
start. Cleared: permit closed after final inspection —
construction is complete.
About this map
This is a map of every newly built or permitted multiplex in Toronto since
2022, refreshed daily from the City's Open Data. Each dot is one permit that
creates between one and six net new homes — a duplex, triplex,
fourplex, five- or six-plex, a laneway or garden suite, or a secondary
suite in an existing house. Wards are shaded by how many net new units
their permits add up to.
What's included
Toronto legalized fourplexes citywide in 2023 and extended as-of-right
permissions up to six units in parts of the city in 2024, so the map caps
at six units per permit to match. A permit is included when it creates at
least one dwelling unit and its proposed use is not a single-family
detached house.
Why some permits aren't new buildings
A permit's structure type only records how many units result, not how much
got built — "2 Unit – Detached" covers both a
ground-up duplex and a basement apartment legalized inside an existing
house. Two thirds of multiplex-scale permits (2022–2026) are secondary
suites or interior-only work on an existing home. For that reason, the map
classifies each permit on two independent axes: the form of the new unit,
and whether the building was newly constructed, converted, or only altered
inside. Interior-only permits are hidden by default; turn them on with the
Construction type filter above.
Where the data comes from
Everything is pulled straight from Toronto Open Data — the
active
and
cleared
building permit datasets, geocoded against the City's municipal address
points and joined to
ward boundaries.
A scheduled job refreshes the whole chain daily. You can download the exact
data behind the map as
GeoJSON, and the code that
builds it is
on GitHub.
Caveats worth knowing
A permit is not a finished building — active permits may stall or be
abandoned, and cleared permits are the only ones confirmed complete.
Permits whose address can't be matched to an address point are counted in
the ward totals but can't be drawn as points.