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307 Cosburn Ave

City of Toronto

Before you make an offer

Here’s what the public record shows about this property.

Buying a home is one of the biggest financial decisions most people make — and some of this is easiest to check before you commit. Every line below is a fact from the City’s open data, not our opinion.

Has this property been altered?
3 building permits on record since 2005, most recently May 2, 2007.
View building permit timeline
What’s the zoning here?
RS (f10.5; a325; d0.75) (x312) · as of Feb 20, 2026
What could change around it?
20 active construction records within 250 m of this address.
View nearby construction

Each line is a fact from the City’s open record. Open the full report for the complete timeline, every nearby project, and the assessment detail.

Agents and sellers already check these records. Buyers usually haven’t.

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Sources we check for every address (25 data sources)
  • Building permits
  • Zoning by-law designation
  • Property boundaries (parcel)
  • Planning & environmental constraints
  • Flood plain & conservation regulation (TRCA)
  • Heritage Register status
  • Building footprint & massing
  • Nearest fire station
  • Nearest TTC transit stop
  • Nearest park & green space
  • Street-tree density
  • Building violations & orders
  • Property standards orders (ML&S)
  • Fire safety inspections
  • Rental building condition rating
  • Rent-reduction notices
  • Business licences
  • Short-term rental registrations
  • Multi-tenant (rooming) house licences
  • Sign permits
  • Development applications
  • Committee of Adjustment (zoning variances)
  • Local Appeal Body appeals
  • Food inspections (DineSafe)
  • Liquor licences

Contains information licensed under the Open Government Licence – Toronto.

Contains information licensed under the Open Government Licence – Ontario.

Contains information made available under the Toronto and Region Conservation Authority (TRCA)'s Open Data Licence v 1.0

Source: Statistics Canada, Forward sortation areas, digital boundary file, 2021 Census. Reproduced and distributed on an "as is" basis with the permission of Statistics Canada.

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307 Cosburn Ave

What you’ll get instantly

  • Full permit history & documents
  • Inspections, orders & violations
  • Zoning, bylaws & exceptions
  • Business licences & past uses
  • Flood, heritage & constraints
  • Excel export

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A presentation of public open-data records, compiled by CanPermits — not an official or certified record, and not affiliated with or endorsed by the City of Toronto.

More — disclaimers & data notice

It draws on the same City open data the municipality publishes, but does not carry the City's certification or legal standing. For an authoritative record — or any legally-binding transaction — order the City of Toronto's official Property Information Report. Not legal, title, or professional advice. Records reflect the most recent data we have ingested and may lag the City's live system.

City open-data records ingested through Jul 5, 2026. Individual sources refresh on their own schedule and may lag the City's live system.

See a personal detail that shouldn’t appear here? Email [email protected] and we’ll remove it.

Building permit timeline

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

View full permit history
2005
2006
2007
  1. 2007

    1 filing
    View permits (1)
  2. 2006

    1 filing
    View permits (1)
  3. 2005

    1 filing
    View permits (1)

Nearby Construction

Within 250 m

Active and recent construction within 250 m of this address.

27 locations shown

  • 1

    301 Cosburn Ave

    Renovation
    43 m
  • 2

    301 Cosburn Ave

    Committee of Adjustment
    44 m
  • 3

    36 Cadorna Ave

    Renovation
    51 m
  • 4

    60 Cadorna Ave

    Renovation
    74 m
  • 5

    44 St Hubert Ave

    Committee of Adjustment
    89 m
  • 6

    51 Lesmount Ave

    Renovation
    118 m
  • 7

    19 Lesmount Ave

    Renovation ×2
    124 m
  • 8

    53 Lesmount Ave

    New Build Demolition
    127 m
  • 9

    12 St Hubert Ave

    New Build
    138 m
  • 10

    12 St Hubert Ave

    Committee of Adjustment
    138 m
  • 11

    60 St Hubert Ave

    Renovation
    151 m
  • 12

    11 St Hubert Ave

    Renovation
    159 m
  • 13

    8 St Hubert Ave

    Renovation
    160 m
  • 14

    9 St Hubert Ave

    Renovation
    165 m
  • 15

    1075 Greenwood Ave

    Renovation
    166 m
  • 16

    299 A Donlands Ave

    Renovation
    178 m
  • 17

    309 Donlands Ave

    Renovation
    181 m
  • 18

    1107 Greenwood Ave

    Renovation
    185 m
  • 19

    1107 Greenwood Ave

    Committee of Adjustment
    188 m
  • 20

    7 Dieppe Rd

    New Build Demolition
    193 m
  • 21

    63 St Hubert Ave

    Committee of Adjustment
    193 m
  • 22

    39 Memorial Park Ave

    Renovation
    199 m
  • 23

    1128 Greenwood Ave

    Renovation
    208 m
  • 24

    39 Memorial Park Ave

    Committee of Adjustment
    209 m
  • 25

    1128 Greenwood Ave

    Committee of Adjustment
    214 m
  • 26

    23 Donmore Ave

    Renovation ×2
    225 m
  • 27

    14 Northbrook Rd

    New Build Demolition
    244 m
4

New Build

18

Renovation

3

Demolition

7

Committee of Adjustment

Construction activity detected within 250 m, from the City of Toronto's open data. Each pin is a City-geocoded point (which may hold more than one record/address); click for details. Contains information licensed under the Open Government Licence – Toronto.

Nearby active addresses

Direct next steps for exploration.

307 Cosburn Ave in Toronto has 3 building permits on record dating back to 2005, most recently on May 2, 2007.