21 Errington Road London W9 3LF

1. 5 Oct 2026

   Received by Westminster

2. 21 Oct 2026

   Validated

   Checked as complete and ready for consideration.

3. 22 Oct 2026

   Added to PlanIndex

4. Decision

   Awaiting decision

   Decision expected by 16 December 2026, 8 weeks from validation under the statutory target for most applications. Extensions of time are common and are agreed case by case.

   Westminster took a median of 86 days over the applications it decided in the last year.

This application is with Westminster for determination, against a statutory target of eight weeks. Over the last year Westminster decided full applications in a median of 119 days. More in our guide to how long planning decisions take.

A full application seeks permission for a complete, detailed proposal in one go, with siting, design, access and landscaping all fixed at this stage. More in our guide to planning application types.

• 45 Barnsdale Road London W9 3LL

  26/01027/COFUL Submitted 18 Feb 2026 50 yards away

  88% historically approved · decision due ~15 Apr

  Demolition of existing rear addition to the property located within the garden; reconstruction of a new rear addition extended 1m in depth from the original footprint of the existing; construction of a side infill extension to ground floor only; modification of the internal layout to create two flats with three bedrooms respectively; introduction of retrofit measures to improve energy efficiency such as solar panels, internal and external wall insulation to the rear of the existing retained structure.

  Awaiting decision Full applications New dwelling Extension +1 13 docs
  Several homes

• Warren Court 4 - 6 Walterton Road London W9 3PN

  05/01767/COFUL Submitted 9 Mar 2005 50 yards away

  Installation of replacement external door and entry system in association with internal works.

  Granted Full applications 4 docs

• Warren Court 4 - 6 Walterton Road London W9 3PN

  05/03611/COFUL Submitted 9 May 2005 50 yards away

  Installation of replacement external door and door entry system.

  Granted Full applications 6 docs

• 47 Barnsdale Road London W9 3LL

  26/01028/FULL Submitted 18 Feb 2026 100 yards away

  88% historically approved · decision due ~21 May

  Demolition of the existing rear addition to the property located within the garden, reconstruction of a new rear addition extended 1m in depth from the original footprint of the existing, construction of a side infill extension to ground floor only, modification of the internal layout to create two flats with three bedrooms respectively. Introduction of retrofit measures to improve the energy efficiency such as solar panels, internal and external wall insulation to the rear of the existing retained structure.

  Awaiting decision Full applications New dwelling Extension +1 23 docs
  Several homes

• 47 Barnsdale Road London W9 3LL

  26/01028/COFUL Submitted 18 Feb 2026 100 yards away

  88% historically approved · decision due ~21 May

  Demolition of the existing rear addition to the property located within the garden, reconstruction of a new rear addition extended 1m in depth from the original footprint of the existing, construction of a side infill extension to ground floor only, modification of the internal layout to create two flats with three bedrooms respectively. Introduction of retrofit measures to improve the energy efficiency such as solar panels, internal and external wall insulation to the rear of the existing retained structure.

  Awaiting decision Full applications New dwelling Extension +1 23 docs
  Several homes

• 17A Fernhead Road London W9 3EU

  12/03163/ADFULL Submitted 22 Mar 2012 100 yards away

  Detailed drawings of the proposed new boundary pursuant to Condition 5 of planning permission dated 27 February 2012 (RN:12/00264).

  Granted Full applications 2 docs

• 26/05984/FULL Decided

  41 Sutherland Street London SW1V 4JX

  Replacement of front, side and rear windows with double glazed timber framed sash windows and replacement of a door with a double glazed timber framed door.

  Received 2 Sep, published by the council 11 Sep 2026 Full applications
• 26/06134/FULL Decided

  Flat 10H Hyde Park Mansions Cabbell Street London NW1 5BG

  Replacement of front and rear second floor level windows with slim-profile double-glazed panels, retaining the existing window and door frames.

  Received 8 Sep, published by the council 15 Sep 2026 Full applications
• 26/07258/FULL Awaiting decision

  16A Croxley Road London W9 3HL

  Installation of air to air heat pumps to offices and bedrooms.

  Received 22 Oct, published by the council 23 Oct 2026 Full applications
• 26/07193/FULL Awaiting decision

  98 Victoria Street London SW1E 5JL

  Shopfront alterations. (Linked with 26/07194/ADV)

  Received 21 Oct, published by the council 22 Oct 2026 Full applications
• 26/07187/FULL Awaiting decision

  Ground Floor Flat 151 Portnall Road London W9 3BN

  Erection of a single storey rear extension.

  Received 21 Oct, published by the council 22 Oct 2026 Full applications