23 Oakhill Avenue London NW3 7RD

This site has had 2 applications since 2025.

• 2025/5717/P Awaiting decision

  23 Oakhill Avenue London NW3 7RD

  Demolition of the existing conservatory and ground-floor extensions associated with excavation works at lower ground floor level for a new two storey extension; installation of external staircase enclosure all to the rear lower and ground floor levels, including alteration to the fenestration treatment to the rear and side elevations, installations of rooflight to the main roofslope, installation of glazed balustrade for a new terrace area at ground floor level all to the rear elevation.

  Submitted 17 Dec 2025 Householder

1. 17 Dec 2025

   Received by Camden

2. 22 Dec 2025

   Validated

   Checked as complete and ready for consideration.

3. 24 Jul 2026

   Added to PlanIndex

4. Decision

   Awaiting decision

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

   Camden took a median of 43 days over the applications it decided in the last year.

This application is with Camden for determination, against a statutory target of eight weeks. Over the last year Camden decided heritage and listed building applications in a median of 56 days. More in our guide to how long planning decisions take.

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.

• 11 Oakhill Avenue London NW3 7RD

  2026/3889/T Submitted 8 Sep 2026 50 yards away

  99% historically approved · decision due ~4 Nov

  REAR GARDEN: 1 x Magnolia (T2) - Crown reduction approx. 5m in height and approx. 15%, 0.75m - 1m. Thin by 10% to shape. All works will be carried out in accordance with BS3998:2010 - Tree Work Recommendations.

  Awaiting decision Trees 3 docs

• 11 Oakhill Avenue London NW3 7RD

  2026/3879/T Submitted 8 Sep 2026 50 yards away

  99% historically approved · decision due ~4 Nov

  (TPO REF: 5H-T42) REAR GARDEN: 1 x Oak (T1) - Reduce crown overall by approx. 10% - 15%, equating to approx. 1.5m - 2m in places, cutting back to suitable growth points and, where appropriate, the previous pruning points. Reduce lateral branches by approx. 1m - 1.5m to provide suitable clearance from the building and roof. Opposite side of crown reduce over footpath to maintain a balanced and proportionate crown. Thin epicormic/sucker growth throughout the canopy since the previous works. All works will be carried out in accordance with BS3998:2010 - Tree Work Recommendations

  Awaiting decision Trees 6 docs

• 23 Oakhill Avenue London NW3 7RD

  2025/5717/P Submitted 17 Dec 2025 50 yards away

  88% historically approved · decision due ~16 Feb

  Demolition of the existing conservatory and ground-floor extensions associated with excavation works at lower ground floor level for a new two storey extension; installation of external staircase enclosure all to the rear lower and ground floor levels, including alteration to the fenestration treatment to the rear and side elevations, installations of rooflight to the main roofslope, installation of glazed balustrade for a new terrace area at ground floor level all to the rear elevation.

  Awaiting decision Householder Extension Loft or dormer +2 15 docs
  Small domestic

• 21 Oakhill Avenue London NW3 7RD

  2024/5242/T 50 yards away

  FRONT GARDEN: 1 x Holly (Ilex aquifolium) (T5) - Reduce in height approx. 2m - 2.5m to the height of the window seal of the first floor. - Trim remaining crown to shape and contain.

  Granted Trees

• 25 Oakhill Avenue London NW3 7RD

  2011/0227/P 50 yards away

  Conversion of ground and first/second floor maisonette to single-family dwelling house (Class C3).

  Granted Full applications
  Domestic

• 25 Oakhill Avenue London NW3 7RD

  2011/0230/L 50 yards away

  Internal alterations in connection with conversion of ground and first/second floor maisonette to single-family dwellinghouse (Class C3).

  Granted Heritage and listed buildings
  Domestic

• 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