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Planning application

17 Grimsdyke Road, Hatch End, Pinner, Harrow, HA5 4PJ

Granted Harrow PL/3161/25 Certificate of Lawful Development Proposed

Works: Extension Loft or dormer Demolition Small domestic

Read from the description, not a valuation. How we read the register

Permission granted. Work must normally begin within three years of the decision or the permission lapses.

Proposal

Certificate of Lawful Proposed Development: Side porch, Two storey rear extension, Alterations and extension to roof to form end gables and rear dormer, Roof light in front roof slope and garage roof slope (Demolition of rear extension)

As published by the council, reference PL/3161/25

Application record

Reference
PL/3161/25
Type
Certificate of Lawful Development Proposed
Status
Permitted
Decision
Grant
Received
5 Dec 2025
Ward
Hatch End
Postcode
HA5 4PJ

Timeline

Dates from the published record

  1. 5 Dec 2025

    Received by Harrow

  2. 12 Aug 2026

    Added to PlanIndex

What a grant of permission means

The process from here

Permission has been granted, usually subject to conditions listed on the decision notice, some of which must be discharged before work starts. The decision notice on the council portal sets out exactly what was approved.

Work must normally begin within three years of the decision or the permission lapses. Neighbours cannot appeal a grant; challenging one means judicial review of how the decision was made, within tight time limits.

About lawful development applications

How this application type works

A lawful development certificate is a legal determination, not a planning judgement. It asks the council to confirm either that existing use or works are lawful, often through the passage of time, or that a proposal would not need planning permission at all. The applicant must prove the facts; the merits of the scheme are not considered.

More on lawful development applications in our guide

Nearby applications

Within 500 metres

  • 17 Grimsdyke Road, Hatch End, Pinner, Harrow, HA5 4PJ

    PL/1615/26 Submitted 12 Jun 2026 0m away

    Decision due ~7 Aug

    Single storey front extension incorporating porch; single and two storey side and rear extensions; alterations to roof; rooflights in front, rear and both side roof slopes; external alterations (demolition of attached garage)

    Status unknown Householder Extension Loft or dormer +1
    Small domestic

  • 17 Grimsdyke Road, Hatch End, Pinner, Harrow, HA5 4PJ

    PL/2999/25 Submitted 19 Nov 2025 0m away

    Decision due ~14 Jan

    Single storey rear extension: 8.00 metres deep, 3.00 metres maximum height and 3.00 metres high to the eaves

    Status unknown Prior approval Extension
    Small domestic

  • 17 Grimsdyke Road, Hatch End, Pinner, Harrow, HA5 4PJ

    PL/0061/26 Submitted 12 Jan 2026 0m away

    Decision due ~9 Mar

    Single storey rear extension: 8.00 metres deep, 3.50 metres maximum height and 3.00 metres high to the eaves

    Status unknown Prior approval Extension
    Small domestic

  • 17 Grimsdyke Road, Hatch End, Pinner, Harrow, HA5 4PJ

    PL/0593/26 Submitted 6 Mar 2026 0m away

    Decision due ~1 May

    Single storey rear extension: 8.00 metres deep, 3.50 metres maximum height and 3.00 metres high to the eaves .

    Status unknown Prior approval Extension
    Small domestic

  • 8 Grimsdyke Road, Hatch End, Pinner, Harrow, HA5 4PH

    PL/0759/26 Submitted 19 Mar 2026 76m away

    Decision due ~14 May

    Certificate of Lawful Proposed Development: 1.8m brick and wood fence to side

    Status unknown Lawful development
    Small domestic

  • 11 Hallam Gardens, Hatch End, Pinner, Harrow, HA5 4PT

    PL/2927/25 Submitted 11 Nov 2025 158m away

    Decision due ~6 Jan

    Details pursuant to Condition 7a, b & c (Written Scheme of Investigation) attached to planning permission PL/2037/25 dated 05/11/2025 for Single storey rear extension; installation of two windows to ground floor side elevation; conversion of garage to habitable room; external alterations (demolition of conservatory)

    Status unknown Conditions Extension Demolition +1
    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

    29 Jun 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

    29 Jun 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

    24 Jun 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)

    22 Jun 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

    22 Jun 2026 Lawful development