22 Derwent Crescent, Stanmore, Harrow, HA7 2NF

1. 28 May 2026

   Received by Harrow

2. 12 Aug 2026

   Added to PlanIndex

3. Decision

   Awaiting decision

   Decision expected by 23 July 2026, 8 weeks from validation under the statutory target for most applications. Extensions of time are common and are agreed case by case.

The published feed does not show a live status for this application, which usually means the council register holds more recent detail than the copy PlanIndex receives.

The council portal linked on this page carries the authoritative version, including the documents, any consultation deadline and the decision once made. PlanIndex refreshes its copy of the register on a daily cycle.

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

• 22 Derwent Crescent, Stanmore, Harrow, HA7 2NF

  PL/1431/26 Submitted 28 May 2026 0m away

  Decision due ~23 Jul

  Single storey rear extension: 6.00 metres deep, 3.15 metres maximum height and 3.00 metres high to the eaves

  Status unknown Prior approval Extension
  Small domestic

• 87 Wetheral Drive, Stanmore, Harrow, HA7 2HH

  PL/1744/25 Submitted 3 Jul 2025 54m away

  Single storey front extension incorporating front porch; conversion of garage to habitable room; single and two storey rear extension; detached outbuilding in rear garden used as a home gym/store

  Granted Householder Extension
  Small domestic

• 110 Wetheral Drive, Stanmore, Harrow, HA7 2HJ

  PL/0870/26 Submitted 30 Mar 2026 82m away

  Decision due ~25 May

  Conversion of garage into habitable room; replacement of garage door with window

  Status unknown Householder Windows or glazing
  Domestic

• 119a Culver Grove, Stanmore, Harrow, HA7 2NP

  PL/2930/25 Submitted 11 Nov 2025 130m away

  Decision due ~6 Jan

  Conversion of dwelling into three flats (1 X 1 bed and 2 X 2 beds); single storey front extension incorporating front porch; single and two storey side extension; single storey rear extension; alterations and extension to roof to form rear dormer; roof lights in front and side roof slopes; separate amenity space; landscaping; parking; bin and cycle stores; external alterations (Demolition of attached garage and rear store)

  Status unknown Full applications New dwelling Extension +2
  Several homes

• 137 Culver Grove, Stanmore, Harrow, HA7 2NP

  PL/2203/25 Submitted 21 Aug 2025 130m away

  Decision due ~16 Oct

  Demolition of existing house and garage; re-development to construct a two storey building for four flats (2 x 1 bed & 2 x 2 beds); parking; separate amenity space for ground floor flats; hard and soft landscaping; vehicle access off St.Andrews Close; bike / bin storage

  Status unknown Full applications New dwelling Demolition
  Several homes

• 120 Uppingham Avenue, Stanmore, Harrow, HA7 2JU

  PL/3008/25 Submitted 19 Nov 2025 133m away

  Decision due ~14 Jan

  Certificate of Lawful Development (Proposed): Proposed hip to gable wall, rear dormer and front roof lights for loft conversion with associated internal alterations

  Status unknown Lawful development Loft or dormer

• 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