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Planning application

P/1012/21

187a Cannon Lane, Pinner, Harrow, HA5 1HY

Refused Harrow Full Planning Application

Proposal

Single storey extension to existing outbuilding at rear (Retrospective); Proposed separation of outbuilding to garage and gym with external alterations to roof and elevations; New shutter to front elevation of existing attached garage at side

As published by the council, reference P/1012/21

Timeline

Dates from the published record

  1. 11 Mar 2021

    Received by Harrow

  2. 17 Mar 2021

    Validated

    Checked as complete and ready for consideration.

  3. 6 May 2021

    Decision issued: Refused

  4. 3 Aug 2026

    Added to PlanIndex

What refusal means

The process from here

The council refused this application for the reasons set out on the decision notice, which the council portal holds in full. Only the applicant can appeal a refusal; the time limit runs from the decision date and is shorter for householder schemes.

Refusal does not prevent a fresh attempt. Applicants often address the reasons for refusal and resubmit, so a refused scheme is not necessarily the end of proposals for the site.

About full applications applications

How this application type works

A full application seeks permission for a complete, detailed proposal in one go: siting, design, access and landscaping are all fixed at this stage. It is the standard route for new buildings, conversions and changes of use. The statutory target is eight weeks for smaller schemes and thirteen weeks for major development, though complex cases often take longer by agreement.

More on full applications applications in our guide

Nearby applications

Within 500 metres

  • P/3558/07 Granted

    187 Cannon Lane, Pinner, HA5 1HY

    Single storey rear extension and provision of pitched roof over existing single storey flat roofed projection

    24 Oct 2007 0m away Full applications
  • P/0966/22 Granted

    185 Cannon Lane, Pinner, Harrow, HA5 1HY

    Outbuilding at rear for use as gym / leisure (demolition of outbuildings)

    8 Mar 2022 0m away Householder
  • WEST/249/00/FUL Granted

    183A Cannon Lane, Pinner, HA5 1HY

    Single storey side to rear extension and single storey front extension

    24 Mar 2000 0m away Full applications
  • WEST/203/00/CLP Withdrawn

    183A Cannon Lane, Pinner, HA5 1HY

    Certificate of lawful proposed development: single storey side to rear extension

    13 Mar 2000 0m away Lawful development
  • P/3645/21 Granted

    185 Cannon Lane, Pinner, Harrow, HA5 1HY

    Single storey rear extension

    2 Sep 2021 0m away Householder
  • P/0509/21 Granted

    191 Cannon Lane, Pinner, Harrow, HA5 1HY

    Installation of 2.74m high side boundary fence (retrospective)

    8 Feb 2021 0m away Householder

In Harrow

  • PL/1244/26 Status unknown

    21 Walton Road, Harrow, HA1 4UX

    Change of use from HMO (C4) to Residential Family Assessment Centre (C2)

    5 May 2026 Full applications
  • PL/0243/26 Status unknown

    Tennessee Express, 2, Alexandra Parade Northolt Road, South Harrow, Harrow, HA2 8HE

    ATM to front (Retrospective)

    22 Jan 2026 Full applications
  • PL/3057/25 Status unknown

    1, Stanmore Towers Church Road, Stanmore, Harrow, HA7 4DE

    Alterations and extension to roof to create 2 new habitable floors, Eight storey side to rear extension (to include extension to ground floor communal area, 1st office and 2nd floor flat); Provision of 9 new flats (5 x 1 bed, 2 x 2 bed and 2 x 3 bed) with associated cycle and waste storage; Juliette balconies to front, rear and both side elevations; Alteration and enclosure of existing terraces on 8th floor; Installation of generator on roof of side to rear extension; External staircase to rear elevation; External alterations (Demolition of roof antennas)

    25 Nov 2025 Full applications
  • PL/1893/25 Granted

    Flats 1 To 48 Howards Close, Harrow, HA5 3UQ

    Installation and replacement of all windows and doors, renewal of roof coverings, rainwater goods, fascia and soffit boards. Installation of insulation to exterior of buildings with smooth render finish; demolition of existing pram sheds to front of flats 1-9 & 10 to 18; new roofs to pram sheds to remaining buildings; general repairs to pathways

    17 Jul 2025 Full applications
  • PL/1562/25 Status unknown

    Flowers Lounge, 392 Northolt Road, South Harrow, Harrow, HA2 8EX

    Alterations to roof; rear dormer; rooflights in front and side roof slopes to create habitable roof space for first floor flat

    17 Jun 2025 Full applications