Construction Brief
ProjectsBP2026-13741
Worth watching · Calgary

Single detached dwelling (south parcel)

4904 21 ST SW · ALTADORE

Recommended next action · Interpretation

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

A building-permit application is active; estimating or supplier selection may be underway.

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

Location context

Project location

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Locating 4904 21 ST SW…

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Construction Brief interpretation

Why this matters

OpportunityWorth watching
Estimated project typeResidential
Estimated current stageBuilding permit application
Likely commercial windowMajor-trade estimatingNow to approximately 4 months
Commercial-window confidence Medium confidence
Record-link confidenceHighAddress-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
  • Project is still early enough for preconstruction follow-up
  • New or changed public record this week
  • 8 related public records linked to this project
  • Applicant identified in a public record

Relevant trades

HVAC and mechanical

Rule-matched new construction or addition

Medium confidence
Plumbing

Rule-matched new construction or addition

Medium confidence
Electrical

Rule-matched new construction or addition

Medium confidence
Append-only history

Project timeline

  1. Verified fact

    Building permit field changed

    Title: SFD,BSMT-DEV,FIREPLACE,GARAGE → SFD,BSMT-DEV,FIREPLACE,GARAGE,PORCH · 2 more fields changed

    First detected Sep 13, 2026 Official record ↗
  2. Verified fact

    Building permit issued

    Building permit issued: SFD,BSMT-DEV,FIREPLACE,GARAGE,PORCH

    First detected Sep 13, 2026 Official record ↗
  3. InterpretationHigh confidence

    Construction Brief assessment

    Project assessed as worth watching at building permit application

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

    Building permit application

    Building permit application: SFD,BSMT-DEV,FIREPLACE,GARAGE,PORCH

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

    Building permit issued

    Building permit issued: SFD,BSMT-DEV,FIREPLACE,GARAGE

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

    Building permit application

    Building permit application: SFD,BSMT-DEV,FIREPLACE,GARAGE

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

    Development permit released

    Development permit released: NEW: SINGLE DETACHED DWELLING (SOUTH PARCEL)

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

    Permit completed

    Permit completed: Demolition at 4904 15 ST SW

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

    Permit completed

    Permit completed: Demolition at 4908 15 ST SW

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

    Building permit issued

    Building permit issued: SFD,BSMT-DEV,FIREPLACE,GARAGE,PORCH

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

    Development permit released

    Development permit released: NEW: SINGLE DETACHED DWELLING (NORTH PARCEL)

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

    Building permit application

    Building permit application: SFD,BSMT-DEV,FIREPLACE,GARAGE,PORCH

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

    Building permit issued

    Building permit issued: Demolition at 4904 15 ST SW

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

    Building permit application

    Building permit application: Demolition at 4904 15 ST SW

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

    Building permit issued

    Building permit issued: Demolition at 4908 15 ST SW

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

    Building permit application

    Building permit application: Demolition at 4908 15 ST SW

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

    Development decision

    Development decision: NEW: SINGLE DETACHED DWELLING (SOUTH PARCEL)

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

    Development decision

    Development decision: NEW: SINGLE DETACHED DWELLING (NORTH PARCEL)

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

    Permit completed

    Permit completed: Demolition at 5604 20 ST SW

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

    Building permit issued

    Building permit issued: Demolition at 5604 20 ST SW

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

    Building permit application

    Building permit application: Demolition at 5604 20 ST SW

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

    Development application

    Development application: NEW: SINGLE DETACHED DWELLING (SOUTH PARCEL)

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

    Development application

    Development application: NEW: SINGLE DETACHED DWELLING (NORTH PARCEL)

    First detected Jul 29, 2026 Official record ↗
Official evidence

Related public records

SourceRecordRecord dateRetrievedEvidence
City of CalgaryCalgary Building PermitsBuilding permit field changedBP2026-13741Sep 12, 2026Sep 13, 2026Official source ↗
City of CalgaryCalgary Building Permitsbuilding_permit · record_updatedBP2026-11222Jul 27, 2026Jul 29, 2026Official source ↗
City of CalgaryCalgary Development Permitsdevelopment_permit · record_updatedDP2025-05013Jul 13, 2026Jul 29, 2026Official source ↗
City of CalgaryCalgary Building Permitsbuilding_permit · record_updatedBP2026-00505Jul 13, 2026Jul 29, 2026Official source ↗
City of CalgaryCalgary Building Permitsbuilding_permit · record_updatedBP2026-00163Jul 13, 2026Jul 29, 2026Official source ↗
City of CalgaryCalgary Building Permitsbuilding_permit · record_updatedBP2026-03836May 19, 2026Jul 29, 2026Official source ↗
City of CalgaryCalgary Development Permitsdevelopment_permit · record_updatedDP2025-05007May 5, 2026Jul 29, 2026Official source ↗
City of CalgaryCalgary Building Permitsbuilding_permit · record_updatedBP2025-22585Dec 11, 2025Jul 29, 2026Official source ↗
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