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CanPermits · property records report · canpermits.com/address/423-ontario-st-toronto

423 Ontario St

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. 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?
1 building permit on record since 2025, most recently Sep 9, 2025.
View building permit timeline
Is work happening right now?
1 permit in active inspection on this property.
What’s the zoning here?
R (d1.0) (x516) · as of Feb 20, 2026
What could change around it?
28 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.

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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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423 Ontario St

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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Money-back guarantee. Full refund if a record is attached to the wrong address, or a permit or order is marked “open” that the City has since closed: email [email protected]. One-time · a 3-day access link is emailed to you.

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 14, 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
2025

  1. 2025

    1 filing
    View permits (1)

    1. Sep 9, 2025

      Proposed new rear detached garage and new walkout rear of house $150K

Nearby Construction

Within 250 m

Active and recent construction within 250 m of this address.

37 locations shown

  • 1

    GERRARD ST E / From: ONTARIO ST / To: BERKELEY ST

    Scheduled Construction
    81 m
  • 2

    GERRARD ST E / From: SEATON ST / To: ONTARIO ST

    Scheduled Construction
    83 m
  • 3

    237 Gerrard St E

    Renovation
    91 m
  • 4

    365 Berkeley St

    Renovation
    94 m
  • 5

    SEATON ST / From: GERRARD ST E / To: CARLTON ST

    Scheduled Construction
    102 m
  • 6

    388 Berkeley St

    Renovation
    110 m
  • 7

    261 Gerrard St E

    Renovation
    111 m
  • 8

    222 Gerrard St E

    Renovation
    113 m
  • 9

    GERRARD ST E / From: BERKELEY ST / To: [N] GERRARD ST E [BRANCH]

    Scheduled Construction
    114 m
  • 10

    390 Berkeley St

    Renovation
    115 m
  • 11

    393 Berkeley St

    Renovation
    119 m
  • 12

    391 Ontario St

    Renovation
    129 m
  • 13

    SEATON ST / From: DUNDAS ST E / To: GERRARD ST E

    Scheduled Construction
    130 m
  • 14

    GERRARD ST E / From: CENTRAL HOSPITAL LANE / To: SEATON ST

    Scheduled Construction
    130 m
  • 15

    209 Carlton St

    Renovation ×2
    131 m
  • 16

    227 Gerrard St E

    New Build Renovation ×2
    137 m
  • 17

    [N] GERRARD ST E [BRANCH] / From: GERRARD ST E / To: PARLIAMENT ST

    Scheduled Construction
    138 m
  • 18

    GERRARD ST E / From: [N] GERRARD ST E [BRANCH] / To: PARLIAMENT ST

    Scheduled Construction
    138 m
  • 19

    218 Gerrard St E

    Renovation
    139 m
  • 20

    213 Carlton St

    Renovation
    143 m
  • 21

    ONTARIO ST / From: CARLTON ST / To: ABERDEEN AVE

    Scheduled Construction
    145 m
  • 22

    270 Seaton St

    Renovation
    151 m
  • 23

    268 Seaton St

    Renovation
    155 m
  • 24

    183 Carlton St

    Renovation
    157 m
  • 25

    181 Carlton St

    Renovation
    161 m
  • 26

    430 Parliament St

    Renovation
    181 m
  • 27

    434 Parliament St

    Renovation
    182 m
  • 28

    GERRARD ST E / From: SHERBOURNE ST / To: CENTRAL HOSPITAL LANE

    Scheduled Construction
    183 m
  • 29

    440 Parliament St

    Renovation
    184 m
  • 30

    171 Carlton St

    Renovation
    189 m
  • 31

    169 Carlton St

    Renovation
    193 m
  • 32

    241 Seaton St

    Renovation
    200 m
  • 33

    238 Carlton St

    Renovation
    211 m
  • 34

    311 Sherbourne St

    Renovation
    230 m
  • 35

    307 Sherbourne St

    Renovation ×2
    238 m
  • 36

    ONTARIO ST / From: ABERDEEN AVE / To: WINCHESTER ST

    Scheduled Construction
    238 m
  • 37

    31 Aberdeen Ave

    Renovation
    240 m
1

New Build

29

Renovation

11

Scheduled Construction

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.

423 Ontario St in Toronto has 1 building permit on record dating back to 2025, most recently on September 9, 2025.