Buildability Analysis

Outputs

Produce analysis_packet.json.

{
  "project_id": "uuid",
  "analysis_timestamp": "ISO datetime",
  "project_concept": {},
  "feasibility_verdict": "green | yellow | red | unknown",
  "approval_signal": "as_of_right | by_right_with_site_plan | minor_variance | rezoning | opa_rezoning | cannot_determine",
  "overall_confidence": 0.0,
  "findings": {
    "use_permissions": {},
    "development_standards": [],
    "overlays": [],
    "planning_context": {}
  },
  "opportunities": [],
  "blockers": [],
  "items_requiring_human_review": [],
  "facts": [],
  "inferences": [],
  "assumptions": [],
  "unknowns": [],
  "confidence_deductions": []
}

Reference Router

Load the reference only when the analysis reaches the relevant stage:

Workflow

1. Validate the inputs

• Confirm parcel geometry and zoning resolution are usable
• Confirm the project concept is specific enough for dimensional checks
• If critical dimensions are missing, continue only with use-permission and high-level policy analysis; mark standards as unknown

2. Check use permissions

Read from these normalized paths:

• zoning.development_standards.permitted_uses
• official_plan.compatible_uses
• official_plan.incompatible_uses

Classify the proposed use as:

• as_of_right
• minor_variance
• rezoning
• opa_rezoning
• cannot_determine

Do not infer by-right status when either zoning applicability or Official Plan compatibility is unresolved.

3. Check development standards

Read all dimensional controls from zoning.development_standards.*.

For each standard, produce:

{
  "standard": "height",
  "permitted_value": "10 m",
  "proposed_value": "9.5 m",
  "status": "compliant | minor_variance_needed | major_relief_needed | unknown",
  "confidence": 0.0,
  "source_urls": []
}

If a provincial override changes the local rule:

• keep the local rule visible
• record the override explicitly
• explain why the override is treated as controlling

4. Assess overlays

Use overlay severity from normalized_data.json where available.

If an upstream overlay lacks severity:

• assign one in analysis as an inference
• explain the reasoning

Treat high-severity overlays as blockers until evidence supports a lower impact.

5. Add planning-context research only where it matters

Research planning intent only when it could change the feasibility conclusion, such as:

• growth-area targeting
• secondary-plan support or conflict
• heritage or hazard policy direction
• major application activity nearby

Use official sources first. Keep this section short and decision-relevant.

6. Surface human-review items

Always consider whether these remain unresolved:

• title and easements
• servicing capacity
• tree protection
• established grade and survey-dependent measurements
• environmental contamination

Do not clear these items without evidence.

7. Score confidence

Start at 1.0, then deduct for unresolved or unstable conditions such as:

• stale source data
• hatched or legacy zoning
• active amendments or appeals
• blocked source retrieval
• material parcel ambiguity

Record every deduction in confidence_deductions.

Decision Rules

• green: use permitted, no known major dimensional conflict, no high-severity blocker confirmed
• yellow: viable but process-heavy or materially uncertain
• red: use prohibited, major relief clearly required, or a high-severity blocker is confirmed
• unknown: too many unresolved controls to support a reliable verdict

Quality Bar

• Use the normalized contract exactly; do not switch to flattened zoning paths
• Keep the analysis decision-oriented, not source-dump oriented
• Every blocker and opportunity must point back to an extracted fact or an explicit inference

Reference Files

Read only the sections needed for the project type and jurisdiction.

Stop Conditions

Stop and return a partial artifact when:

• Parcel geometry or zoning resolution is unusable
• The project concept is too vague for dimensional checks
• normalized_data.json has critical unresolved fields that would flip the verdict
• An active OLT appeal makes the controlling zoning standard indeterminate

External References