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Proptimize
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The engine
Every record on the lot goes in. A proposal comes out.
What the city publishes
~498K
Lot boundaries
Lot lines as a map layer.
681,584
Building permits
What has already been built.
286,583
Development applications
What is being proposed now.
36,619
Requests to break a rule
Filed as free-text descriptions.
THE PROPTIMIZE ENGINE
Resolves every by-law and exception onto every lot in the city.
Reads the city's documents one by one and pulls the facts out.
Links every lot to the lots it touches, measured to 5 cm.
~600,000
assemblable lot pairs
27,006
lots with committee history
What comes out
A budget lenders accept
Residential
$1.73M
Commercial
$197K
Annual total
$1.93M
Total project cost $26.1M
A building design that fits the lot
6 storeys
24 units
By-law 569-2013
A proposal ready to send to partners
PROPOSAL
Developers
Lenders
Redevelopment partners
The open data tells you the rule. We tell you the answer.
Assemblable lot pairs: adjacent Toronto lots that share at least 2 m of lot line, sit in the same residential zone under by-law 569-2013 and carry no heritage, flood, TRCA or rental-protection constraint. Each pair can be assembled into one site. Proptimize data platform, September 2026.