Construction Brief
ProjectsBP2026-07145
Worth watching · Calgary

4 unit rowhouse + secondary suites

4431 21 AV NW · MONTGOMERY

Recommended next action · Interpretation

Validate the construction team and ask whether estimating or supplier selection is active.

The building permit is issued; verify mobilization and any unawarded scope quickly.

Verify the latest status with the official source or project team before acting.

Construction Brief interpretation

Why this matters

OpportunityWorth watching
Estimated project typeCommercial
Estimated current stageBuilding permit application
Likely commercial windowMajor-trade estimatingNow to approximately 4 months
Commercial-window confidence Medium confidence
Record-link confidenceLowAddress-only association; verify the related records

The source indicates new-build or major building scope at permit application; trade estimating may be active, but no procurement date is published.

Evidence behind the ranking

  • Disclosed value above CA$500,000
  • Commercial project with broad trade relevance
  • Project is still early enough for preconstruction follow-up
  • New or changed public record this week
  • 3 related public records linked to this project

Relevant trades

HVAC and mechanical

The project is classified as commercial; mechanical scope is not stated in the source.

Low confidence · Now to approximately 4 months
Electrical

The project is classified as commercial; electrical scope is not stated in the source.

Low confidence · Now to approximately 4 months
Building materials

The project type indicates broad construction-material demand.

Medium confidence · Now to approximately 4 months
Concrete

The public description indicates new-build, addition, or structural scope.

Medium confidence · Now to approximately 4 months
Plumbing

New-build or multi-unit scope commonly includes plumbing work.

Low confidence · Now to approximately 4 months
Append-only history

Project timeline

  1. Verified fact

    Building permit record updated

    Building permit record updated: Demolition at 4431 21 AV NW

    First detected Aug 19, 2026 Official record ↗
  2. Verified fact

    Building permit record updated

    Building permit record updated: Demolition at 4431 21 AV NW

    First detected Aug 18, 2026 Official record ↗
  3. Verified fact

    Building permit record updated

    Building permit record updated: 4 unit rowhouse + secondary suites

    First detected Aug 18, 2026 Official record ↗
  4. Verified fact

    Building permit issued

    Building permit issued: Demolition at 4431 21 AV NW

    First detected Aug 18, 2026 Official record ↗
  5. Verified fact

    Building permit issued

    Building permit issued: 4 unit rowhouse + secondary suites

    First detected Aug 18, 2026 Official record ↗
  6. InterpretationHigh confidence

    Construction Brief assessment

    Project assessed as general activity at building permit application

    First detected Aug 10, 2026 Underlying source ↗
  7. Verified fact

    Building permit record updated

    Building permit record updated: Demolition at 4431 21 AV NW

    First detected Aug 10, 2026 Official record ↗
  8. InterpretationHigh confidence

    Construction Brief assessment

    Project assessed as worth watching at building permit application

    First detected Aug 1, 2026 Underlying source ↗
  9. Verified fact

    Building permit record updated

    Building permit record updated: Demolition at 4431 21 AV NW

    First detected Aug 1, 2026 Official record ↗
  10. Verified fact

    Building permit application

    Building permit application: Demolition at 4431 21 AV NW

    First detected Aug 1, 2026 Official record ↗
  11. InterpretationHigh confidence

    Construction Brief assessment

    Project assessed as worth watching at development approved

    First detected Aug 1, 2026 Underlying source ↗
  12. Verified fact

    Development record updated

    Development record updated: NEW: TOWNHOUSE (1 BUILDING), SECONDARY SUITE (4 SUITES), ACCESSORY RESIDENTIAL BUILDING (GARAGE)

    First detected Jul 29, 2026 Official record ↗
  13. Verified fact

    Development permit released

    Development permit released: NEW: TOWNHOUSE (1 BUILDING), SECONDARY SUITE (4 SUITES), ACCESSORY RESIDENTIAL BUILDING (GARAGE)

    First detected Jul 29, 2026 Official record ↗
  14. InterpretationHigh confidence

    Construction Brief assessment

    Project assessed as top opportunity at building permit application

    First detected Aug 1, 2026 Underlying source ↗
  15. Verified fact

    Building permit record updated

    Building permit record updated: 4 unit rowhouse + secondary suites

    First detected Jul 29, 2026 Official record ↗
  16. Verified fact

    Building permit application

    Building permit application: 4 unit rowhouse + secondary suites

    First detected Jul 29, 2026 Official record ↗
  17. Verified fact

    development_permit · sdab_decision

    development_permit · sdab_decision: NEW: TOWNHOUSE (1 BUILDING), SECONDARY SUITE (4 SUITES), ACCESSORY RESIDENTIAL BUILDING (GARAGE)

    First detected Jul 29, 2026 Official record ↗
  18. Verified fact

    development_permit · sdab_hearing

    development_permit · sdab_hearing: NEW: TOWNHOUSE (1 BUILDING), SECONDARY SUITE (4 SUITES), ACCESSORY RESIDENTIAL BUILDING (GARAGE)

    First detected Jul 29, 2026 Official record ↗
Official evidence

Related public records

SourceRecordRecord dateRetrievedEvidence
City of CalgaryCalgary Building PermitsBuilding permit record updatedBP2026-14440Aug 18, 2026Aug 19, 2026Official source ↗
City of CalgaryCalgary Building PermitsBuilding permit record updatedBP2026-07145Aug 15, 2026Aug 18, 2026Official source ↗
City of CalgaryCalgary Development PermitsDevelopment record updatedDP2025-01860May 19, 2026Jul 29, 2026Official source ↗
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