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CanPermits · property records report · canpermits.com/address/18-louisa-st-ottawa

18 Louisa St

City of Ottawa

2 permits
since 2025
Nov 18, 2025
Most recent permit

Building permit timeline

Year-grouped permit history. Permits collapse under each year.

2025

  1. 2025

    2 filings
    View permits (2)

    1. Nov 18, 2025

      Revision: AMENDMENT TO CON-2024-010311: Construct a 10 storey apartment build... $21.5M

    2. Feb 13, 2025

      Interior and exterior alterations to a 3 storey institutional building (parti... $150K

Nearby Construction

Within 250 m

Active and recent construction within 250 m of this address.

8 locations shown

  • 1

    18 Louisa

    Development Permits
    30 m
  • 2

    384 Arlington

    Development Permits
    110 m
  • 3

    370 Cambridge

    Development Permits
    147 m
  • 4

    370 Cambridge St N

    New Build Demolition
    157 m
  • 5

    783 Gladstone Ave

    Renovation
    190 m
  • 6

    818 Gladstone

    Development Permits
    226 m
  • 7

    520 Bronson Ave

    Renovation ×2
    231 m
  • 8

    119 Bell St N

    Renovation
    249 m
1

New Build

4

Renovation

1

Demolition

4

Development Permits

Construction activity detected within 250 m, from the City of City of Ottawa's open data. Each pin is a City-geocoded point (which may hold more than one record/address); click for details. Open data · City of Ottawa

Nearby active addresses

Direct next steps for exploration.

18 Louisa St in Ottawa has 2 building permits on record dating back to 2025, most recently on November 18, 2025.