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CanPermits · property records report · canpermits.com/address/421-ontario-st-toronto

421 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 2010, most recently May 10, 2010.
View building permit timeline
What’s the zoning here?
R (d1.0) (x516) · as of Feb 20, 2026
What could change around it?
29 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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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.

Get the full record

421 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 Jun 30, 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
2010

  1. 2010

    1 filing
    View permits (1)

    1. May 10, 2010

      Proposed installation of new bath tub on third floor of existing dwelling. $1K

Nearby Construction

Within 250 m

Active and recent construction within 250 m of this address.

35 locations shown

  • 1

    423 Ontario St

    Renovation
    13 m
  • 2

    2 addresses at this point

    Scheduled Construction ×2
    76 m
  • 3

    237 Gerrard St E

    Renovation
    86 m
  • 4

    365 Berkeley St

    Renovation
    94 m
  • 5

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

    Scheduled Construction
    102 m
  • 6

    261 Gerrard St E

    Renovation
    107 m
  • 7

    222 Gerrard St E

    Renovation
    109 m
  • 8

    2 addresses at this point

    Scheduled Construction ×2
    111 m
  • 9

    388 Berkeley St

    Renovation
    114 m
  • 10

    390 Berkeley St

    Renovation
    119 m
  • 11

    393 Berkeley St

    Renovation
    123 m
  • 12

    391 Ontario St

    Renovation
    124 m
  • 13

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

    Scheduled Construction
    127 m
  • 14

    2 addresses at this point

    Scheduled Construction ×2
    127 m
  • 15

    227 Gerrard St E

    New Build Renovation ×2
    133 m
  • 16

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

    Scheduled Construction
    135 m
  • 17

    218 Gerrard St E

    Renovation
    136 m
  • 18

    209 Carlton St

    Renovation ×2
    136 m
  • 19

    213 Carlton St

    Renovation
    147 m
  • 20

    270 Seaton St

    Renovation
    147 m
  • 21

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

    Scheduled Construction
    150 m
  • 22

    268 Seaton St

    Renovation
    151 m
  • 23

    183 Carlton St

    Renovation
    161 m
  • 24

    181 Carlton St

    Renovation
    165 m
  • 25

    430 Parliament St

    Renovation
    182 m
  • 26

    434 Parliament St

    Renovation
    183 m
  • 27

    440 Parliament St

    Renovation
    185 m
  • 28

    171 Carlton St

    Renovation
    192 m
  • 29

    241 Seaton St

    Renovation
    195 m
  • 30

    169 Carlton St

    Renovation
    196 m
  • 31

    238 Carlton St

    Renovation
    215 m
  • 32

    311 Sherbourne St

    Renovation
    228 m
  • 33

    307 Sherbourne St

    Renovation ×2
    236 m
  • 34

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

    Scheduled Construction
    243 m
  • 35

    31 Aberdeen Ave

    Renovation
    244 m
1

New Build

30

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.

421 Ontario St in Toronto has 1 building permit on record dating back to 2010, most recently on May 10, 2010.