1 Derwent Avenue Barnet EN4 8LU

1. 16 Jun 2026

   Received by Barnet

2. 26 Jun 2026

   Validated

   Checked as complete and ready for consideration.

3. 17 Jul 2026

   Decision issued: Lawful

4. 10 Aug 2026

   Added to PlanIndex

Barnet granted permission on 17 July 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.

• 4 Derwent Avenue Barnet EN4 8LX

  26/1823/192 Submitted 14 May 2026 50 yards away

  Roof extension involving hip to gable, rear dormer window with juliette balcony and 3no. front facing rooflights. Removal of a chimney (AMENDED DESCRIPTION)

  Granted Lawful development Extension Loft or dormer +1 5 docs

• 20 Derwent Avenue Barnet EN4 8LX

  25/4929/192 Submitted 9 Dec 2025 100 yards away

  Roof extension involving rear dormer window with juliette balcony

  Refused Lawful development Extension Loft or dormer +1 10 docs

• 33 Avondale Avenue Barnet EN4 8LT

  24/1736/CON Submitted 1 May 2024 100 yards away

  Submission of details of condition 3 (Materials) pursuant to planning permission 22/1488/FUL dated 04/05/22

  Withdrawn Conditions 8 docs

• 20 Derwent Avenue Barnet EN4 8LX

  26/2836/192 Submitted 31 Jul 2026 100 yards away

  79% historically approved · decision due ~25 Sep

  Roof extension involving rear dormer window with juliette balcony

  Awaiting decision Extension Loft or dormer +1

• Land Side Of The Rectory 136 Church Hill Road East Barnet EN4 8XD

  24/1754/PNT Submitted 3 May 2024 200 yards away

  Installation of a 17.38 metre high monopole supporting 6no. antennas and a 300mm transmission dish. Installation of 3no. equipment cabinets and ancillary development thereto

  Refused Telecoms 17 docs

• St Marys The Virgin Church Of England Church Church Hill Road Barnet EN4 8XD

  TPP/0506/25 Submitted 15 Aug 2025 250 yards away

  1 x Dead Tree - Fell. Standing in Area A1 of Tree Preservation Order. (Exempted 5 day notice)

  Decided Trees 3 docs

• 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