13 Adderley Road, Harrow Weald, Harrow, HA3 7HS

1. 26 Feb 2026

   Received by Harrow

2. 12 Aug 2026

   Added to PlanIndex

3. Decision

   Awaiting decision

   Decision expected by 23 April 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

• 13 Adderley Road, Harrow Weald, Harrow, HA3 7HS

  PL/1643/26 Submitted 15 Jun 2026 0m away

  Decision due ~10 Aug

  Certificate of Lawful Development (Proposed): Change Of Use From dwelling house (Class C3) to a House In Multiple Occupation with 6 Bedrooms and 6 occupants max (small HMO) (Class C4); installation of windows and doors to rear at ground floor level

  Status unknown Lawful development Windows or glazing
  Domestic

• 58 Adderley Road, Harrow Weald, Harrow, HA3 7HT

  PL/0804/26 Submitted 24 Mar 2026 32m away

  Decision due ~19 May

  Certificate of Lawful Development (Proposed): Front porch; alterations and extension to roof to form end gable; rear dormer with Juliette balcony; three rooflights in front roof slope

  Status unknown Lawful development Extension Loft or dormer
  Small domestic

• 58 Adderley Road, Harrow Weald, Harrow, HA3 7HT

  PL/3169/25 Submitted 8 Dec 2025 32m away

  Certificate of Lawful Development (Proposed): Front porch; alterations and extension to roof to form end gable; rear dormer with Juliet balcony; three rooflights in front roof slope; window in end gable; external alterations

  Refused Lawful development Extension Loft or dormer +1
  Small domestic

• 58 Adderley Road, Harrow Weald, Harrow, HA3 7HT

  PL/3166/25 Submitted 8 Dec 2025 32m away

  Decision due ~2 Feb

  Single storey rear extension: 6.00 metres deep, 3.14 metres maximum height and 2.80 metres high to the eaves

  Status unknown Prior approval Extension
  Small domestic

• 30 College Hill Road, Harrow Weald, Harrow, HA3 7HE

  PL/1671/26 Submitted 18 Jun 2026 129m away

  Decision due ~13 Aug

  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

• 30 College Hill Road, Harrow Weald, Harrow, HA3 7HE

  PL/1687/26 Submitted 18 Jun 2026 129m away

  Decision due ~13 Aug

  Alterations to roof to form gable ends and two rear dormers (one with juliette balcony); installation of five rooflights to front roofslope; external alterations

  Status unknown Full applications 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