49A Chiltern Street London W1U 6LZ

1. 6 Jul 2026

   Received by Westminster

2. 16 Jul 2026

   Validated

   Checked as complete and ready for consideration.

3. 21 Jul 2026

   Added to PlanIndex

4. Decision

   Awaiting decision

   Decision expected by 10 September 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 66 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 lawful development applications in a median of 78 days. More in our guide to how long planning decisions take.

A lawful development certificate is a legal determination that existing or proposed works do not need planning permission; the merits of the scheme are not considered. More in our guide to planning application types.

• 3 - 6 Kenrick Place London W1U 6HD

  26/01390/FULL Submitted 4 Mar 2026 50 yards away

  87% historically approved · decision due ~29 Apr

  Erection of new rear dormer, refurbishment of the existing windows (excluding the ground floor shopfront glazing to No. 6 Kenrick Place) with new painted timber framed double glazed units, replacement of glazed roof lantern with a new metal framed roof lantern, installation of four new condenser units at roof level, installation of timber doors and Juliet balcony railing to front elevation, installation of two rooflights to the west facing pitched roof, installation of frosted manifestation film to a small number of west elevation window panes and installation of access door, safety balustrading and safety access walkway at roof level.

  Awaiting decision Full applications Loft or dormer Windows or glazing 26 docs

• 3 - 6 Kenrick Place London W1U 6HD

  26/06071/NMA Submitted 7 Sep 2026 50 yards away

  93% historically approved · decision due ~2 Nov

  Amendments to planning permission dated 29th April 2026 (RN 26/01390/FULL) for the Erection of new rear dormer, refurbishment of the existing windows (excluding the ground floor shopfront glazing to No. 6 Kenrick Place) with new painted timber framed double glazed units, replacement of glazed roof lantern with a new metal framed roof lantern, installation of four new condenser units at roof level, installation of timber doors and Juliet balcony railing to front elevation, installation of two rooflights to the west facing pitched roof, installation of frosted manifestation film to a small number of west elevation window panes and installation of access door, safety balustrading and safety access walkway at roof level. NAMELY, to provide updated Environmental Noise Survey and HVAC Plant Noise Impact Analysis' report document with version 4.0 (dated 3rd August 2026). The changes to the report reflect the assessment based on a different window within the lightwell, which the neighbour identified as being a bedroom (previously assumed to be a bathroom). This has resulted in a change to insertion loss requirements for the plant enclosure.

  Awaiting decision Amendments Loft or dormer Windows or glazing

• 67 Chiltern Street London W1U 6NJ

  07/02400/AD7 Submitted 14 Mar 2007 50 yards away

  Display for a temporary period of six months of a non-illuminated 'to let' board located on the face of the building at a height of between 3m and 4.6m above pavement level and measuring 1.2m x 0.9m.

  Granted Advertising 2 docs

• 67 Chiltern Street London W1U 6NJ

  17/10688/ADFULL Submitted 1 Dec 2017 50 yards away

  Detailed drawings of pilasters and consol brackets pursuant to condition 5 of planning permission dated 03 August 2017 (RN:17/05545/FULL)

  Granted Full applications 9 docs

• 67 Chiltern Street London W1U 6NJ

  26/02395/FULL Submitted 13 Apr 2026 50 yards away

  87% historically approved · decision due ~8 Jun

  Repainting of external brick facade.

  Awaiting decision Full applications 10 docs

• 67 Chiltern Street London W1U 6NJ

  06/07359/AD7 Submitted 14 Sep 2006 50 yards away

  Display for a temporary period of six months of a non-illuminated 'to let' board located on the face of the building at a height of between 3m and 4.6m above pavement level and measuring 1.2m x 0.9m.

  Granted Advertising 2 docs

• 26/06158/CLOPUD Awaiting decision

  2 Hamilton Gardens London NW8 9PT

  Erection of replacement, enlarged single storey ground floor rear extension.

  Received 9 Sep, published by the council 15 Sep 2026 Lawful development
• 26/06080/CLEUD Awaiting decision

  91 Gloucester Place London W1U 6JG

  Certificate of lawfulness for an existing use or development to confirm that the development authorised by full planning permission ref. 22/08385/FULL & listed building consent (RN 22/08386/LBC) has lawfully commenced as a result of the works evidenced.

  Received 7 Sep, published by the council 14 Sep 2026 Lawful development
• 26/06044/CLOPUD Awaiting decision

  9 Abinger Mews W9 3SP

  Proposed loft conversion with rear dormer and 3 front rooflights to existing mid-terraced house.

  Received 3 Sep, published by the council 11 Sep 2026 Lawful development
• 26/06035/CLOPUD Awaiting decision

  30 Ashworth Road W9 1JY

  Erection of new garden retaining wall and erection of new garden timber fence to match the height of existing fence.

  Received 3 Sep, published by the council 11 Sep 2026 Lawful development
• 26/05871/CLEUD Awaiting decision

  32 Cambridge Street London SW1V 4QH

  Confirmation of the lawful implementation of planning permission dated 13 August 2021 (RN: 21/04143/FULL) has commenced before the expiry of the three year time period and may, therefore, lawfully be carried out and completed.

  Received 27 Aug, published by the council 4 Sep 2026 Lawful development