Skip to content
PlanIndex Get alerts
Menu

Planning application

4 Derwent Avenue Barnet EN4 8LX

Granted Barnet 26/1823/192 Proposed Lawful Development Certificate

Works: Extension Loft or dormer Windows or glazing

Permission granted. Work must normally begin within three years of the decision or the permission lapses.

Proposal

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

As published by the council, reference 26/1823/192

Application record

Reference
26/1823/192
Type
Proposed Lawful Development Certificate
Status
Lawful
Decision
Granted As published: Lawful
Received
14 May 2026
Validated
20 May 2026
Decided
9 Jun 2026
Ward
Brunswick Park
Decision by
Delegated Decision
Postcode
EN4 8LX

Timeline

Dates from the published record

  1. 14 May 2026

    Received by Barnet

  2. 20 May 2026

    Validated

    Checked as complete and ready for consideration.

  3. 9 Jun 2026

    Decision issued: Lawful

  4. 16 Aug 2026

    Added to PlanIndex

Who's behind it

Company information only, from the register and Companies House

Steven Gray Design Limited Agent, a design practice

60 applications on PlanIndex · across 6 councils · 82% granted

Trade members see everything this firm has filed, how it was decided, and get an email the day it files again.

See their track record

Documents

Plans, drawings, consultee responses and the officer's report

5 documents on file for this application

A planning file usually holds the application form, drawings and site plans, consultee responses, the officer's report and the decision notice.

Watch members (£5 a month) open the document list from here.

Open the documents

What this grant of permission means

Barnet granted permission on 9 June 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.

About lawful development applications

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.

Nearby applications

Within 0.3 miles

  • 1 Derwent Avenue Barnet EN4 8LU

    26/2247/192 Submitted 16 Jun 2026 50 yards away

    Roof extension involving hip to gable, rear dormer window, 2no. front facing rooflights and new side gable window

    Granted Lawful development Extension Loft or dormer +1 8 docs

  • 33 Avondale Avenue Barnet EN4 8LT

    24/1736/CON Submitted 1 May 2024 50 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

    25/4929/192 Submitted 9 Dec 2025 50 yards away

    Roof extension involving rear dormer window with juliette balcony

    Refused Lawful development Extension Loft or dormer +1 10 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

  • 32 Haslemere Avenue Barnet EN4 8EZ

    26/1095/HSE Submitted 23 Mar 2026 200 yards away

    77% historically approved · decision due ~27 May

    Single storey front porch and rear extenision with access steps and patio area. Conversion of the existing garage into habitable room with new pitch roof and insertion of window to replace garage door

    Awaiting decision Householder Extension Windows or glazing 8 docs
    Small domestic

In Barnet

  • 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