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Planning application

12 Ashdale Grove, Stanmore, Harrow, HA7 3SB

Granted Harrow P/1594/23 Certificate of Lawful Development Existing

Works: Extension Loft or dormer

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

Proposal

CERTIFICATE OF LAWFUL DEVELOPMENT (PROPOSED): Alterations and extension to roof to form end gable to create first floor level; rear dormer; three rooflights in front roofslope; extension to svp at side

As published by the council, reference P/1594/23

Application record

Reference
P/1594/23
Type
Certificate of Lawful Development Existing
Status
Final
Decision
Grant
Received
30 May 2023
Validated
6 Jun 2023
Decided
25 Jul 2023
Ward
Stanmore
Decision by
Delegated
Postcode
HA7 3SB

Site history

Applications at this address on the Harrow register

This site has had 6 applications since 2023: 3 approved, 1 refused.

  • PL/2908/25 Status unknown

    12 Ashdale Grove, Stanmore, Harrow, HA7 3SB

    Certificate of Lawful Development (Proposed): Single storey rear extension (demolition of detached garage) (Following established prior approval reference PL/0172/24)

    Submitted 10 Nov 2025 Lawful development
  • PL/0172/24 Granted

    12 Ashdale Grove, Stanmore, Harrow, HA7 3SB

    Single storey rear extension: 6.00 metres deep, 3.00 metres maximum height and 2.90 metres high to the eaves

    Submitted 24 Jan 2024 Prior approval
  • P/1646/23/PRIOR Refused

    12 Ashdale Grove, Stanmore, Harrow, HA7 3SB

    Single storey rear extension: 6.00 metres deep, 3.00 metres maximum height and 2.90 metres high to the eaves

    Decided 18 Jul 2023 Prior approval
  • P/1644/23 Withdrawn

    12 Ashdale Grove, Stanmore, Harrow, HA7 3SB

    CERTIFICATE OF LAWFUL DEVELOPMENT (PROPOSED): Front porch and external steps; alteration and replacement of window in front elevation.

    Submitted 6 Jun 2023 Lawful development
  • P/1542/23 Granted

    12 Ashdale Grove, Stanmore, Harrow, HA7 3SB

    CERTIFICATE OF LAWFUL DEVELOPMENT (PROPOSED): Detached outbuilding at rear for use as home office

    Decided 26 Jul 2023 Lawful development

Timeline

Dates from the published record

  1. 30 May 2023

    Received by Harrow

  2. 6 Jun 2023

    Validated

    Checked as complete and ready for consideration.

  3. 25 Jul 2023

    Decision issued: Grant

  4. 2 Sep 2026

    Added to PlanIndex

Documents

Plans, drawings, consultee responses and the officer's report

21 documents on file for this application

A planning file usually holds the application form, drawings and site plans, consultee responses, the officer's report and the decision notice.

Trade members open them from here.

Open the documents

What this grant of permission means

Harrow granted permission on 25 July 2023, subject to any conditions on the decision notice. Work must normally begin within three years or the permission lapses. More in our guide to what happens after a planning decision.

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 500 metres

  • 17 Ashdale Grove, Stanmore, HA7 3SB

    P/1330/17 Submitted 15 Mar 2017 0m away

    Single storey rear extension

    Decided Householder Extension 13 docs
    Small domestic

  • 25 Ashdale Grove, Stanmore, Harrow, HA7 3SB

    P/2001/21 Submitted 12 May 2021 0m away

    Certificate of lawful development (proposed): Alterations to roof to form end gable and rear dormer; installation of five rooflights in front roofslope; front porch; replacement of window with door to side elevation

    Granted Lawful development Extension Loft or dormer +1 11 docs
    Small domestic

  • 7 Ashdale Grove, Stanmore, Harrow, HA7 3SB

    P/2494/22 Submitted 5 Jul 2022 0m away

    Single storey side to rear extension

    Granted Householder Extension 15 docs
    Small domestic

  • 12 Ashdale Grove, Stanmore, Harrow, HA7 3SB

    PL/0172/24 Submitted 24 Jan 2024 0m away

    Single storey rear extension: 6.00 metres deep, 3.00 metres maximum height and 2.90 metres high to the eaves

    Granted Prior approval Extension
    Small domestic

  • 28 Ashdale Grove, Stanmore, Harrow, HA7 3SB

    PL/0094/24 Submitted 15 Jan 2024 0m away

    Single storey side to rear extension; raised patio and external steps to rear; external alterations (demolition of detached garage)

    Granted Householder Extension Demolition
    Small domestic

  • 10 Ashdale Grove, Stanmore, HA7 3SB

    P/0502/17 Submitted 26 Jan 2017 0m away

    Single storey rear extension: extending 6 metres beyond the original rear wall 3.8 Metres maximum height 3 metres high to the eaves

    Decided Householder Extension 10 docs
    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