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Stephen Gallagher's AI architectural drafting experiment

News Nov 2, 2026

Architect Stephen Gallagher describes generating vector construction drawings through Python, with human redlines and remaining code-compliance errors.

2 sources attached
Author-published AI-generated architectural sheet showing left and right exterior elevations of a house, dimension lines, material notes and a title block.
An exterior-elevation sheet Gallagher attributes to Opus 5.5 in his October 28 experiment. This is an author-published AI-generated sample with a simulated project title block, not evidence of permit approval or an independently checked construction document. Source: Stephen Gallagher; AI-generated drawing attributed to Claude Opus 5.5
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Stephen Gallagher's AI architectural drafting experiment timeline

Stephen Gallagher tested models on generating construction documents from concept sketches and a reference drawing set. His October 28 account describes Python-generated vector linework rather than raster image generation or autonomous use of an existing CAD application.

He judged Opus 5.5’s strongest output to be permit-quality after substantial feedback, but also disclosed a missing second means of egress required by a Massachusetts amendment. The account does not establish permit approval. A new Hacker News discussion on November 2 brought renewed attention to the older experiment.