Second-Storey Addition Context: 341 Cosburn Ave
Daniel Du, Development Analytics
Generated 2026-09-22

== Method ==
Building heights are the City's LiDAR-derived values for the main building on each lot. We measure every lot within 500 m. The map bands the heights at the thresholds that matter in an 'out of character' argument. Addition precedent uses Committee of Adjustment records with the work type 'R Addition'. We geolocate each record to the parcel fabric. We normalize decisions. The record before 2015 is thin, so the counts are conservative.

== Sources ==
- City of Toronto Open Data: Topographic Building Outlines (LiDAR heights). Municipal Parcels.
- City of Toronto Open Data: Committee of Adjustment Applications, accessed September 2026.

This is a retrospective demonstration on a decided public application. The Committee of Adjustment already decided this file, and it is a public record. Daniel Du was not retained on the matter. We prepared this analysis after the decision, as a work sample. It states no planning opinion.
