25 Park Avenue London NW11 7SL

This site has had 2 applications since 2026: 1 approved, 0 refused.

• 26/2656/HSE Decided

  25 Park Avenue London NW11 7SL

  Roof extension including hip to gable to both sides with gable windows, 3no. dormer windows to front elevation, 2no. dormer windows and 2no. rooflights to rear elevation. Alterations to existing chimneys. Replacement of existing ground and first floor windows

  Submitted 16 Jul 2026 Householder

1. 13 Apr 2026

   Received by Barnet

2. 14 Apr 2026

   Validated

   Checked as complete and ready for consideration.

3. 11 May 2026

   Decision issued: Lawful

4. 25 Jul 2026

   Added to PlanIndex

Barnet granted permission on 11 May 2026, 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.

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.

• 16 Park Avenue London NW11 7SJ

  25/4487/192 Submitted 11 Nov 2025 50 yards away

  Roof extension involving hip to gable with rear dormer window. Single storey side and rear extension insertion of 1no. rooflight, new front hardstanding to driveway and walkway with new pedestrian gate, new bin store to front (Approved under 24/3493/HSE)

  Withdrawn Lawful development Extension Loft or dormer +1 12 docs
  Small domestic

• 3 Park Avenue London NW11 7SL

  26/2623/FUL Submitted 14 Jul 2026 50 yards away

  63% historically approved · decision due ~8 Sep

  Demolition of existing dwellinghouse and construction of new two storey detached dwellinghouse with room in the roof, associated amenity space, off-street parking, refuse and cycle parking and installation of air source heat pump within a timber enclosure

  Decided Full applications Demolition 16 docs
  Domestic

• 25 Park Avenue London NW11 7SL

  26/2656/HSE Submitted 16 Jul 2026 50 yards away

  77% historically approved · decision due ~11 Sep

  Roof extension including hip to gable to both sides with gable windows, 3no. dormer windows to front elevation, 2no. dormer windows and 2no. rooflights to rear elevation. Alterations to existing chimneys. Replacement of existing ground and first floor windows

  Decided Householder Extension Loft or dormer +1 20 docs
  Domestic

• 9 Park Avenue London NW11 7SL

  25/4912/HSE Submitted 8 Dec 2025 100 yards away

  Single storey rear extension with 1no. rooflight. Alterations to roof above kitchen. External level drop down with new steps. New terrace area with new garden retaining wall

  Granted Householder Extension Loft or dormer 24 docs
  Small domestic

• 16 Park Avenue London NW11 7SJ

  26/3447/192 Submitted 22 Sep 2026 100 yards away

  78% historically approved · decision due ~24 Nov

  Alterations to existing roof extension involving hip to gable extension, enlargement of existing rear dormer window, 2no. rooflights on dormer roof, 1no. front, 1no. rear facing rooflights and 1no. circular window to gable end

  Awaiting decision Extension Loft or dormer +1

• 79 North End Road London NW11 7RL

  26/0640/RCU Submitted 18 Feb 2026 150 yards away

  Sub-division of the existing dwelling into 2no. self-contained flats (Retrospective) Internal alterations to upper flat into 2 bed flat

  Refused Amendments New dwelling 12 docs
  Domestic

• 26/2679/192 Granted

  21 Myddelton Park London N20 0JH

  Single storey rear extension and increase in ridge height of existing rear outrigger (Amended description).

  Received 20 Jul, published by the council 7 Aug 2026 Lawful development
• 26/1362/191 Refused

  145 Cotswold Gardens London NW2 1PL

  Use as a House in Multiple Occupation (HMO) for 6 people

  Received 14 Apr, published by the council 25 Jul 2026 Lawful development
• 26/1907/191 Granted

  8 Golders Manor Drive London NW11 9HT

  Use of the property as a self-contained residential unit at ground floor level and the first and second floors as a 4-bedroom, 4-person House in Multiple Occupation (Sui Generis) (AMENDED DESCRIPTION)

  Received 21 May, published by the council 16 Aug 2026 Lawful development
• 26/2392/192 Refused

  6 Mostyn Road Edgware HA8 0JD

  New front hardstanding and vehicular access to provide off-street parking

  Received 23 Jun, published by the council 9 Aug 2026 Lawful development
• 26/2059/192 Refused

  Low Ridge Rowley Lane Barnet EN5 3HS

  Erection of a rear outbuilding

  Received 3 Jun, published by the council 16 Aug 2026 Lawful development