First And Second Floor Maisonette 103 Colney Hatch Lane London N10 1LR

1. 30 Jan 2026

   Received by Barnet

2. 5 Feb 2026

   Validated

   Checked as complete and ready for consideration.

3. 10 Aug 2026

   Added to PlanIndex

4. Decision

   Awaiting decision

   Decision expected by 2 April 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.

• 85 Colney Hatch Lane London N10 1LR

  26/2591/FUL Submitted 10 Jul 2026 50 yards away

  63% historically approved · decision due ~14 Sep

  Roof extension involving rear dormer window and 2no. front facing rooflights

  Awaiting decision Full applications Extension Loft or dormer +1 12 docs

• The Minstrel Boy 156 Colney Hatch Lane London N10 1ET

  24/1701/191 Submitted 29 Apr 2024 100 yards away

  Use as 7no. Studio flats (Amended Description)

  Granted Lawful development New dwelling 47 docs

• 6 Halliwick Road London N10 1AB

  26/0522/192 Submitted 10 Feb 2026 100 yards away

  Roof extension involving rear dormer window and 3no. front facing rooflights. Increase in height to vent pipe on rear elevation

  Granted Lawful development Extension Loft or dormer +1 20 docs

• 15 Wilton Road London N10 1LX

  24/2349/192 Submitted 14 Jun 2024 100 yards away

  Roof extension involving rear dormer windows, 3no. front facing rooflights and new side gable window

  Granted Lawful development Extension Loft or dormer +1 12 docs

• 11 Halliwick Road London N10 1AA

  25/3931/HSE Submitted 25 Sep 2025 150 yards away

  77% historically approved · decision due ~20 Nov

  Single storey side/rear infill extension with 4no. side rooflights and alterations to existing patio/decking area levels

  Awaiting decision Householder Extension Loft or dormer 15 docs
  Small domestic

• 25 Wilton Road London N10 1LX

  25/3597/192 Submitted 1 Sep 2025 150 yards away

  Roof extension including rear dormer window to main roof and rear outrigger, 1no. front facing rooflight and new side gable window

  Granted Lawful development Extension Loft or dormer +1 8 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