320 Blackthorn Ave

Building permits

Every permit the City lists for this address since 2017, and any still open from before, newest first.

• Heating and ventilation

  HVAC - Proposed interior alterations, front addition, rear addition, and second storey addition to existing semi-detached single family dwelling.

  Applied Apr 15, 2021 · issued May 11, 2021 · completed Feb 16, 2024 · Permit 20 188419 HVA

  Closed

• Plumbing

  Plumbing - Proposed interior alterations, front addition, rear addition, and second storey addition to existing semi-detached single family dwelling.

  Applied Sep 1, 2020 · issued May 11, 2021 · completed Feb 16, 2024 · Permit 20 188419 PLB

  Closed

• Small residential project · Multiple projects

  Proposed interior alterations, front addition, rear addition, and second storey addition to existing semi-detached single family dwelling.

  Applied Sep 1, 2020 · issued May 11, 2021 · completed Feb 16, 2024 · Permit 20 188419 BLD

  Closed

• Small residential project · Garage

  Proposal to construct a detached garage in the rear yard of the existing single family dwelling.

  Applied Jul 17, 2018 · issued Aug 8, 2018 · completed Dec 30, 2019 · Permit 18 195219 BLD

  Closed

Committee of Adjustment

No applications to the City's Committee of Adjustment for this address since 2017. That's where an owner asks for a minor variance (a small exception to the zoning by-law) or a consent to divide a lot.

What’s planned nearby

Development sites within 500 m

No rezoning, site plan, subdivision or condominium file open within 500 m, and no pre-construction project on the site.

Neighbours’ Committee of Adjustment files within 250 m

• 308 Silverthorn Ave · Minor variance

  To construct a new one-storey ancillary building (shed), in the rear yard of the property. The existing rear one-storey ancillary building (shed), with an interlock pad, will be demolished/removed.

  110 m away · filed Jun 9, 2026 · Approved

• 343 Blackthorn Ave · Minor variance

  To construct a new fourplex and a new as of right garden suite in the rear.

  230 m away · filed May 8, 2026 · Approved

• 449 Rogers Rd · Minor variance

  To construct a new four-storey semi-detached mixed-use building (with a mezzanine level above the ground floor and cantilevered portions of the second, third and fourth storeys at the front and east sides of the building) with a covered front entrance, a rooftop staircase access enclosure (for maintenance), rear balconies on the second, third and fourth storeys with a rear exterior access staircase, and a rear basement walkout. Long-term bicycle parking spaces will be provided within the dwelling units. There will be a total of four residential dwelling units, and one commercial unit within t…

  250 m away · filed Feb 18, 2026 · Approved

• 44 Rowntree Ave · Minor variance

  To convert the existing rear one-storey detached ancillary building into a two-storey ancillary building (containing a two-car garage on the ground level, and one garden suite that will occupy the rear portion of the ground level and the second level), by constructing a second storey addition, and a two-storey addition along the rear (north) and side (east) portion of the building. There will be a total of two residential dwelling units on this lot (one unit within the main dwelling and one unit within the ancillary building).

  120 m away · filed Nov 24, 2025 · Approved

• 249 Silverthorn Ave · Minor variance

  To alter the existing two-storey detached dwelling by constructing a rear two-storey addition, new front and rear covered verandahs with stairs, front and rear basement walkouts, and front and rear second storey balconies. Also, to construct a new two-storey detached ancillary building (containing one garden suite which will occupy both levels), in the rear yard of the property. There will be a total of four residential dwelling units on this lot (three dwelling units within the main house and one dwelling unit within the ancillary building).

  220 m away · filed Jul 10, 2024 · Approved

• 320 Silverthorn Ave · Minor variance

  To alter the existing two-storey detached dwelling (within the Commercial/Residential (CR) zone) by constructing a rear two-storey addition with ground and second storey rear balconies, and a side (south) parking pad. Also, to alter the existing storage shed located in the rear yard.

  130 m away · filed May 12, 2023 · Approved

• 357 Silverthorn Ave · Minor variance

  To construct a new dwelling with an integral garage.

  210 m away · filed Aug 11, 2022 · Approved

• 291 Silverthorn Ave · Minor variance

  To alter the existing two-storey mixed-use building ('Retail (Butcher) Store') by construct a new one-storey rear addition.

  110 m away · filed Jul 21, 2022 · Approved

Everything planned in Davenport