18 Helenslea Avenue London NW11 8ND

This site has had 2 applications since 2025.

• 25/5014/HSE Awaiting decision

  18 Helenslea Avenue London NW11 8ND

  Single storey side and rear wrap around extension with side and rear rooflights, following demolition of existing conservatory and garage. New front porch. Alterations to front garden including resurfacing of driveway and replacement of front pathway and step access

  Submitted 15 Dec 2025 Householder

1. 8 Jan 2026

   Received by Barnet

2. 10 Aug 2026

   Added to PlanIndex

3. Decision

   Awaiting decision

   Decision expected by 5 March 2026, 8 weeks from validation under the statutory target for most applications. Extensions of time are common and are agreed case by case.

   Barnet took a median of 46 days over the applications it decided in the last year.

This application is with Barnet for determination, against a statutory target of eight weeks. Over the last year Barnet decided lawful development applications in a median of 28 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.

• 18 Helenslea Avenue London NW11 8ND

  25/5014/HSE Submitted 15 Dec 2025 50 yards away

  77% historically approved · decision due ~9 Feb

  Single storey side and rear wrap around extension with side and rear rooflights, following demolition of existing conservatory and garage. New front porch. Alterations to front garden including resurfacing of driveway and replacement of front pathway and step access

  Awaiting decision Householder Extension Loft or dormer +1 11 docs
  Small domestic

• 68 Hodford Road London NW11 8NG

  26/0131/192 Submitted 14 Jan 2026 100 yards away

  80% historically approved · decision due ~11 Mar

  Two storey rear extension. Erection of a rear outbuilding. Roof extension involving insertion of 2no. front and rear facing rooflights following removal of the existing rear dormer window. Changes to fenestration

  Awaiting decision Lawful development Extension Loft or dormer +1 3 docs

• 68 Hodford Road London NW11 8NG

  25/3877/192 Submitted 20 Sep 2025 100 yards away

  80% historically approved · decision due ~18 Nov

  Roof extension including side dormer window, 2no. front and rear facing rooflights and new side gable window. Two storey rear extension. Erection of a rear outbuilding

  Awaiting decision Lawful development Extension Loft or dormer +1 3 docs

• 26 Dunstan Road London NW11 8AA

  25/4661/HSE Submitted 21 Nov 2025 100 yards away

  Single storey rear infill extension

  Granted Householder Extension 13 docs
  Small domestic

• 1A Helenslea Avenue London NW11 8NE

  24/1583/S73 Submitted 22 Apr 2024 100 yards away

  Variation of condition 10 (Hours of Use) of planning permission reference 20/6048/FUL dated 08/12/2021 for 'Demolition of existing building and construction of new Sassov Synagogue comprising of basement, part-one storey and part-two storey building. Demolition of Mikve (religious bath) and storage buildings. Provision of disabled parking spaces and cycle parking. New soft and hard landscape and associated site works.' Variation to include changing the wording of the condition to read 'The use hereby permitted shall not be open to members of the public before 06:30 or after 23:00, with the exception of the first night of Shavuot and the eve of Rosh Hashanah.'

  Granted Conditions Demolition 14 docs

• 52 Hodford Road London NW11 8NJ

  26/2893/NMA Submitted 5 Aug 2026 150 yards away

  65% historically approved · decision due ~30 Sep

  Non material amendment to planning permission 25/2474/HSE dated 22/09/2025 for 'Part single, part two storey side and rear extension. Front extension and conversion of the existing garage into habitable room, including insertion of window and door to replace garage door. Replacement of existing windows. Roof extension involving rear dormer window.'. Amendments includes changing material of proposed extension to traditional brick red and reconciling the window dimensions, to balance the rear elevation to have equal sized windows

  Decided Amendments Extension Loft or dormer +1

• 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