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Planning application

106 Cannonbury Avenue, Pinner, Harrow, HA5 1TT

Status unknown Harrow PL/3319/25 Certificate of Lawful Development Proposed

Works: Extension Loft or dormer

Still open. Anyone can comment while the consultation period runs, and comments go to the council rather than to us.

Proposal

Certificate of Lawful Development (Proposed): Wrap around rear dormer; two rooflights in both side roof slopes

As published by the council, reference PL/3319/25

Application record

Reference
PL/3319/25
Type
Certificate of Lawful Development Proposed
Received
19 Dec 2025
Ward
Pinner South
Postcode
HA5 1TT

Site history

Applications at this address on the Harrow register

This site has had 2 applications since 2025: 1 approved, 0 refused.

  • PL/3312/25 Granted

    106 Cannonbury Avenue, Pinner, Harrow, HA5 1TT

    Single storey rear extension: 8.00 metres deep, 3.90 metres maximum height and 2.70 metres high to the eaves

    Submitted 19 Dec 2025 Prior approval

Timeline

Dates from the published record

  1. 19 Dec 2025

    Received by Harrow

  2. 12 Aug 2026

    Added to PlanIndex

  3. Decision

    Awaiting decision

    Decision expected by 13 February 2026, 8 weeks from validation under the statutory target for most applications. Extensions of time are common and are agreed case by case.

Checking the current position

The published feed does not show a live status for this application; the register on Harrow's own portal holds the authoritative version.

About lawful development applications

A lawful development certificate is a legal determination that existing or proposed works do not need planning permission; the merits of the scheme are not considered. More in our guide to planning application types.

Nearby applications

Within 0.3 miles

  • 86 Cannonbury Avenue, Pinner, Harrow, HA5 1TT

    PL/0361/25 Submitted 13 Feb 2025 50 yards away

    Conversion of garage to habitable room, Replace garage door with window in front elevation, Alterations to roof of garage to raise height, Single storey rear extension, Raised patio to rear, External alterations

    Granted Householder Extension Windows or glazing
    Small domestic

  • 126 Cannonbury Avenue, Pinner, Harrow, HA5 1TT

    PL/0213/26 Submitted 26 Jan 2026 50 yards away

    Decision due ~23 Mar

    Single storey rear extension: 6.00 metres deep, 3.00 metres maximum height and 2.80 metres high to the eaves

    Status unknown Prior approval Extension
    Small domestic

  • 106 Cannonbury Avenue, Pinner, Harrow, HA5 1TT

    PL/3312/25 Submitted 19 Dec 2025 50 yards away

    Single storey rear extension: 8.00 metres deep, 3.90 metres maximum height and 2.70 metres high to the eaves

    Granted Prior approval Extension
    Small domestic

  • 141 Cannonbury Avenue, Pinner, Harrow, HA5 1TR

    PL/0905/25 Submitted 31 Mar 2025 50 yards away

    Single storey front extension incorporating porch, Single and two storey side to rear extension (Demolition of attached garage)

    Withdrawn Householder Extension Demolition
    Small domestic

  • 69 Chestnut Drive, Pinner, Harrow, HA5 1LX

    PL/1667/26 Submitted 17 Jun 2026 50 yards away

    Decision due ~12 Aug

    Single and first floor rear extensions; external alterations

    Status unknown Householder Extension
    Domestic

  • 69 Chestnut Drive, Pinner, Harrow, HA5 1LX

    PL/1399/26 Submitted 21 May 2026 50 yards away

    Decision due ~16 Jul

    Single storey rear extension: 6.00 metres deep, 3.00 metres maximum height and 3.00 metres high to the eaves

    Status unknown Prior approval Extension
    Small domestic

In Harrow

  • PL/1761/26 Status unknown

    1 Middle Road, Harrow On The Hill, Harrow, HA2 0HW

    Certificate of lawful development (proposed): Replacement of ground floor front bay window

    Received 29 Jun, published by the council 12 Aug 2026 Lawful development
  • PL/1772/26 Status unknown

    114 Somervell Road, South Harrow, Harrow, HA2 8TT

    Certificate of Lawful Proposed Development: Demolition and replacement of first floor level and roof

    Received 29 Jun, published by the council 12 Aug 2026 Lawful development
  • PL/1735/26 Status unknown

    222 Malvern Avenue, South Harrow, Harrow, HA2 9HE

    Certificate of lawful development (proposed): Rear dormer; installation of rooflight in front roofslope

    Received 24 Jun, published by the council 12 Aug 2026 Lawful development
  • PL/1716/26 Status unknown

    59 Leamington Crescent, South Harrow, Harrow, HA2 9HH

    Certificate of Lawful Development (Proposed): Garden room with garden tools storage at rear (demolition of detached garage)

    Received 22 Jun, published by the council 12 Aug 2026 Lawful development
  • PL/1696/26 Status unknown

    31 Chandos Road, Harrow, HA1 4QX

    Certificate of Lawful Development (Proposed): Alterations and extension to roof to form end gable; rear dormer; two rooflights in front roof slope; window in end gable

    Received 22 Jun, published by the council 12 Aug 2026 Lawful development