Can an as-built stair turn 180° through winders with no separation?
Two published measurements. Two code limits. CodeTrace and the Commission both conclude that the stair does not comply.
Open Ontario walkthroughSource-backed Canadian permit review
Real cases in. Verifiable results out.
CodeTrace turns permit evidence into human-verified facts, explicit building-code calculations, and an audit trail. Explore two real adjudicated cases from Ontario and British Columbia.
Same verified inputs. Same result. A human makes the decision.
Official Ontario case replay
Exact outcome matchA clear failure, independently matched
01
Official source2024 ONBCC 19 public decision
02
Verified case factsWinder turn = 180°; separation = 0 mm
03
Deterministic calculation180° > 90°; 0 mm < 1,200 mm
04
Machine resultDoes not meet, 2 of 2 checks
05
Official outcomeCommission also found no sufficiency of compliance
Source-derived recordThe decision, address, citations, configuration and result are public. The original permit drawings are not attached, so the digital record is clearly labelled as reconstructed from the decision.
Choose a real case
Two jurisdictions. Two different review problems.
Ontario shows an exact deterministic match. British Columbia shows where the engine must stop and hand an interpretation to a qualified decision-maker.
Can a balcony and exterior stair qualify as an exit passageway?
The arithmetic is repeatable, but legal classification decides the outcome. CodeTrace flags that boundary and preserves the Board’s decision separately.
Open BC walkthroughNo hidden reasoning
Every comparison is visible
No automatic approval
The official remains in control
No silent guessing
Missing evidence stays missing
One review, start to finish
Four steps. Nothing mysterious.
The product separates what came from the submission, what a person verified, what the rules calculated, and what the official decided.
INPUT
The permit package enters
Attach one mixed-file ZIP package, an individual PDF, IFC, DXF, JSON file, or enter structured data. CodeTrace retains and fingerprints the source, then reconciles facts across package members.
Output: source files, reconciled facts, and explicit conflicts
VERIFY
A person confirms the facts
CodeTrace suggests facts it can extract safely. A reviewer accepts, corrects, or rejects each one before it can affect a result.
Output: a verified, immutable submission revision
CHECK
Explicit rules run
Versioned expressions compare the verified facts with rule requirements. The decision path does not use generative AI.
Output: pass, fail, missing, or uncertain
DECIDE
The official decides
Each finding carries its evidence, inputs, calculation, source citation, and history. The official confirms, overrides, requests information, or defers.
Output: a review decision with an audit trail
Where the product stands
Working software, with the boundary stated plainly.
Working today
- Permit evidence upload and hashing
- Mixed permit-package, PDF, IFC, DXF and structured-data extraction
- 2D DXF footprint measurement with deterministic Part 3 or Part 9 routing
- Human verification before extracted facts are used
- Repeatable deterministic checks and calculation traces
- Revisions, review decisions, audit history and exports
- Official Ontario and BC decision replays for selected scenarios
Required for an authoritative production pilot
- 1Permission to use and map the complete official code source
- 2Qualified review of every activated jurisdiction rule
- 3Complete permit packages paired with official review outcomes
- 4Field testing with a municipality or other authority having jurisdiction
The product now separates the working review workspace, public decision replays, and synthetic technical demonstrations. Coverage, source support, testing, and remaining limits are explained together on one page.
See it yourself
A useful demo takes about one minute.
Choose a jurisdiction
Start with Ontario for a clear numerical match, or BC for an interpretation boundary.
Inspect the application record
View or download every source-derived fact that entered the engine.
Compare machine and official results
Replay the calculation, then see where qualified interpretation changed the outcome.