7 Trevelyan Crescent, Harrow, HA3 0RN

1. 29 Oct 2025

   Received by Brent

2. 6 Nov 2025

   Validated

   Checked as complete and ready for consideration.

3. 30 Dec 2025

   Decision issued: Permission Granted

4. 11 Aug 2026

   Added to PlanIndex

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.

Householder applications cover work to an existing house and its garden: extensions, loft and garage conversions, porches, outbuildings and similar alterations within the boundary of the home. They cannot be used to create a separate dwelling or change what the building is used for. Councils aim to decide them within eight weeks, and immediate neighbours are usually notified and given a chance to comment.

More on householder applications in our guide

• 31 Trevelyan Crescent, Harrow, HA3 0RN

  20/4068 Submitted 9 Dec 2020 0m away

  Widening of the existing vehicle crossing and new front boundary wall to dwellinghouse

  Refused Householder 6 docs
  Small domestic

• 9 Trevelyan Crescent, Harrow, HA3 0RN

  15/4891 Submitted 15 Jun 2016 0m away

  Replacement of existing roof tiles with new rosemary red tiles and replacement of one existing front elevation window with uPVC window to dwellinghouse (article 4)

  Granted Householder Roofing Windows or glazing 7 docs
  Domestic

• 47 Trevelyan Crescent, Harrow, HA3 0RN

  20/2774 Submitted 8 Sep 2020 0m away

  Proposed conversion of garage into habitable room replacing existing door with window to dwellinghouse.

  Granted Householder Windows or glazing 5 docs
  Domestic

• 5 Trevelyan Crescent, Harrow, HA3 0RN

  26/2189 Submitted 28 Aug 2026 2m away

  79% historically approved · decision due ~23 Oct

  Conversion of existing garage into habitable room with replacement of door with windows to dwelli...

  Awaiting decision Windows or glazing

• 20 Trevelyan Crescent, Harrow, HA3 0RL

  23/0408 Submitted 6 Feb 2023 33m away

  Proposed erection of two-storey rear extension and alterations to patio to dwellinghouse

  Granted Householder Extension 7 docs
  Domestic

• 32 Trevelyan Crescent, Harrow, HA3 0RL

  20/3822 Submitted 23 Nov 2020 33m away

  Proposed alterations to front garden landscaping, formation of one additional off street parking space, and widening of existing cross over to dwellinghouse.

  Refused Householder 10 docs
  Domestic

• 26/0944 Refused

  11 Briar Road, Harrow, HA3 0DP

  Retention of two-storey side extension with associated front balcony; conversion of attached garage to habitable room; part single-storey side infill extension; single-storey rear extension with raised patio; installation of 3x side rooflights & 1x rear rooflight; replacement of roof-tiles, front door, external windows, garage door and chimney stack; installation of external lighting to the front elevation; and installation of 4x retractable bollards, hardstanding, associated soft-landscaping, drainage channels and soakaway within forecourt of dwellinghouse (amended description)

  14 Apr 2026 Householder
• 26/0945 Granted

  11 Briar Road, Harrow, HA3 0DP

  Proposed two-storey side extension with associated front balcony; conversion of attached garage to habitable room; part single-storey side infill extension; single-storey rear extension with raised patio; installation of 3x side rooflights & 2x rear rooflights; replacement of roof-tiles; retention of front door; alterations to external windows; replacement of uPVC garage door with timber garage door; removal of external lighting on front elevation; reinstatement of chimney stack; and installation of hardstanding, associated soft landscaping, drainage channels and soakaway within forecourt of dwellinghouse (amended description)

  14 Apr 2026 Householder
• 26/0859 Granted

  56 Okehampton Road, London, NW10 3EP

  Proposed demolition of side garage, erection of two storey side extension, replacement of rear doors to ground floor, replacement of 4x windows and removal of 1x window and 1x door to side elevation, new front boundary wall and bin storage to front garden.

  2 Apr 2026 Householder
• 26/1190 Refused

  244 Willesden Lane, Willesden, London, NW2 5RE

  Demolition of conservatory and shed, and erection of a single-storey side infill and rear extension, installation of a door to the side elevation and erection of a new masonry side boundary wall to the dwellinghouse.

  12 May 2026 Householder
• 26/0867 Refused

  14 Mount Pleasant Road, London, NW10 3EL

  Proposed erection of boundary wall, a bin store, pedestrian and vehicular access gates, associated hard and soft landscaping to front garden (revised description)

  2 Apr 2026 Householder