172 Byron Road, Wealdstone, Harrow, HA3 7TG

1. 31 Mar 2026

   Received by Harrow

2. 12 Aug 2026

   Added to PlanIndex

3. Decision

   Awaiting decision

   Decision expected by 26 May 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

• 166 Byron Road, Wealdstone, Harrow, HA3 7TG

  PL/1245/24 Submitted 7 May 2024 0m away

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

  Granted Prior approval Extension
  Small domestic

• 140 Byron Road, Wealdstone, Harrow, HA3 7TG

  P/1793/19 Submitted 12 Apr 2019 0m away

  Withdrawn - rear dormer and insertion of two rooflights in front roofslope

  Decided Householder Loft or dormer 5 docs
  Domestic

• 138 Byron Road, Wealdstone, Harrow, HA3 7TG

  P/4742/19 Submitted 12 Nov 2019 0m away

  Certificate of lawful development (proposed): Alterations to roof to form end gable and rear dormer; installation of two rooflights in front roofslope

  Granted Lawful development Loft or dormer 9 docs

• 160 Byron Road, Wealdstone, Harrow, HA3 7TG

  P/1421/22 Submitted 11 Apr 2022 0m away

  CERTIFICATE OF LAWFUL DEVELOPMENT (EXISTING):Use of dwellinghouse (Class C3) to house of multiple occupancy (HMO) for upto 6 persons (Class C4)

  Granted Lawful development 15 docs
  Domestic

• 140 Byron Road, Wealdstone, Harrow, HA3 7TG

  P/4237/19 Submitted 3 Oct 2019 0m away

  Rear dormer; two rooflights in front roofslope

  Granted Lawful development Loft or dormer 10 docs

• 166 Byron Road, Wealdstone, Harrow, HA3 7TG

  PL/2592/24 Submitted 19 Sep 2024 0m away

  Certificate of Lawful Development (Proposed): Rear Facing Dormer, 2 No. Rooflights to front elevation

  Granted 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