21 Mornington Crescent London Camden NW1 7RG

This site has had 2 applications since 2023: 1 approved, 0 refused.

• 2024/1729/P Withdrawn

  21 Mornington Crescent London Camden NW1 7RG

  Erection of outbuilding to the rear of garden for use as a studio office with associated landscaping.

  Decided 3 Jul 2024 Full applications

1. 31 Jan 2023

   Received by Camden

2. 21 Feb 2023

   Validated

   Checked as complete and ready for consideration.

3. 29 Apr 2024

   Decision issued: Granted

4. 22 Jul 2026

   Added to PlanIndex

Camden granted permission on 29 April 2024, subject to any conditions on the decision notice. Work must normally begin within three years or the permission lapses. More in our guide to what happens after a planning decision.

Listed building consent is needed for works that affect the special interest of a listed building, and carrying out such works without it is a criminal offence. More in our guide to planning application types.

• 21 Mornington Crescent London Camden NW1 7RG

  2024/1729/P 50 yards away

  Erection of outbuilding to the rear of garden for use as a studio office with associated landscaping.

  Withdrawn Full applications

• Flat A 21 Mornington Crescent London NW1 7RG

  2025/4167/P Submitted 1 Oct 2025 50 yards away

  92% historically approved · decision due ~2 Dec

  Conversion of maisonette into two self contained flats at ground and lower ground, replacement of window with door and infill at lower ground floor and cycle storage to rear

  Awaiting decision Full applications New dwelling Extension +1 8 docs

• Flat A, 21 Mornington Crescent Camden London NW1 7RG

  2025/0938/L 50 yards away

  Conversion of existing maisonette to two self-contained flats, excavation of existing front cellar vaults to accommodate bathroom and utility room and infill of front lightwell under entrance footbridge

  Withdrawn Heritage and listed buildings New dwelling Extension

• 21 Mornington Crescent London NW1 7RG

  2021/2654/P 50 yards away

  Two storey rear extension at lower and ground floor level and associated works and the reconfiguration of the internal layout.

  Withdrawn Full applications Extension

• 21 Mornington Crescent London NW1 7RG

  2022/0055/L 50 yards away

  Construction of an outbuilding to the rear of garden for the use as a studio office including associated landscaping. See planning permission application 2021/5608/P for associated plans and documents

  Withdrawn Heritage and listed buildings

• Flat A 21 Mornington Crescent London NW1 7RG

  2025/4472/L Submitted 19 Sep 2025 50 yards away

  96% historically approved · decision due ~2 Dec

  Conversion of maisonette into two self contained flats at ground and lower ground with internal alterations, replacement of window with door and infill at lower ground floor and cycle storage to rear

  Awaiting decision Heritage and listed buildings New dwelling Extension +1 1 doc

• 2026/1141/L Granted

  25 John Street London WC1N 2BS

  Internal and external alterations to partition layout at basement, supporting structures and external ground level, and alterations to design of conservatory, windows and doors granted under listed building consent 2024/0338/L dated 06/08/2024.

  Received 26 Mar, published by the council 24 Jul 2026 Heritage and listed buildings
• 2025/1781/L Granted

  Frognal Rise House Lower Terrace London NW3 6RE

  Demolition of existing garage and interlinking gallery and replacement with new garage and garden room with link, new basement floor below garden, alterations to main house including replacement windows including reinstated oriel window and new French doors to entrance elevation, new roofing to side wing, new portico and replacement door to front elevation, enlargement of existing lightwell, replacement gates and canopy over entrance gate, restorations of boundary treatments, associated internal alterations including partial underpinning works and other minor alterations.

  Received 22 Apr, published by the council 22 Jul 2026 Heritage and listed buildings
• 2026/4129/L Awaiting decision

  6 Leverton Street London NW5 2PJ

  Strip out kitchen including floor tiles and replace; replace plumbing and flooring in rear ensuite; replace plumbing in front ensuite and WC; replace internal doors; replace garden wall with metal railing; replace 3 rear windows, 3 rear elevation side windows, 1 rear door and 1 rear elevation side door with double-glazed crittal windows and doors; remove 2 rear windows; render rear elevation brickwork; and associated works.

  Received 1 Oct, published by the council 9 Oct 2026 Heritage and listed buildings
• 2026/1686/L Granted

  Flat Ground and 1st Floor and Flat 2nd and 3rd Floor 14 Downshire Hill London NW3 1NR

  External and internal alterations in connection with conversion of two self-contained flats into a single-family dwellinghouse, including new doors at rear ground and second floor level, replacement windows at rear second and third floors level, removal of internal partitions, extending the stair handrail, and replacement internal doors, parquet flooring, skirting, architraves, cornicing, and fittings.

  Received 19 May, published by the council 24 Jul 2026 Heritage and listed buildings
• 2026/2202/L Refused

  4 Hampstead Square London NW3 1AB

  Erection of conservatory to front elevation.

  Received 27 May, published by the council 24 Jul 2026 Heritage and listed buildings