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Planning application

11 Rosslyn Avenue Barnet EN4 8DH

Granted Barnet 25/4618/192 Proposed Lawful Development Certificate

Works: Extension Loft or dormer Demolition 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 to both sides, rear dormer window with 3 front facing rooflights following demolition of existing chimney on rear roofslope.

As published by the council, reference 25/4618/192

Application record

Reference
25/4618/192
Type
Proposed Lawful Development Certificate
Status
Lawful
Decision
Granted As published: Lawful
Received
19 Nov 2025
Validated
19 Nov 2025
Decided
3 Dec 2025
Ward
East Barnet
Decision by
Delegated Decision
Postcode
EN4 8DH

Site history

Applications at this address on the Barnet register

This site has had 2 applications since 2025: 1 approved, 0 refused.

  • 25/5160/HSE Awaiting decision

    11 Rosslyn Avenue Barnet EN4 8DH

    Single storey front and rear extension and extension of existing patio area. Raising of the side garage roof. Changes to fenestration and creation of new openings

    Submitted 23 Dec 2025 Householder

Timeline

Dates from the published record

  1. 19 Nov 2025

    Received by Barnet

  2. 3 Dec 2025

    Decision issued: Lawful

  3. 10 Aug 2026

    Added to PlanIndex

Who's behind it

Company information only, from the register and Companies House

AS ARCHITECTURAL SERVICES LTD Agent, an architecture practice

48 applications on PlanIndex · across 7 councils · 60% granted

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Documents

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

10 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.

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What this grant of permission means

Barnet granted permission on 3 December 2025, 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

  • 11 Rosslyn Avenue Barnet EN4 8DH

    25/5160/HSE Submitted 23 Dec 2025 50 yards away

    77% historically approved · decision due ~17 Feb

    Single storey front and rear extension and extension of existing patio area. Raising of the side garage roof. Changes to fenestration and creation of new openings

    Awaiting decision Householder Extension Windows or glazing 10 docs
    Small domestic

  • 9A Rosslyn Avenue Barnet EN4 8DH

    26/0975/192 Submitted 16 Mar 2026 50 yards away

    Roof extension involving 2no. hip to gable extensions and 1no. rear dormer window and 3no. front facing rooflights (amended)

    Granted Lawful development Extension Loft or dormer +1 13 docs

  • 33 Rosslyn Avenue Barnet EN4 8DH

    26/3216/NMA Submitted 2 Sep 2026 50 yards away

    65% historically approved · decision due ~2 Nov

    Non-material amendments to planning permission reference 24/1856/HSE dated 10/07/24 for 'Single storey rear extension with new raised terrace area with associated access steps'. Amendments include change to size of door opening, colour of proposed rear door frame and window. Changes to the balustrade design (amended description).

    Decided Amendments Extension Windows or glazing
    Small domestic

  • 28 Church Hill Road Barnet EN4 8TB

    26/1300/FUL Submitted 8 Apr 2026 150 yards away

    63% historically approved · decision due ~3 Jun

    Single storey rear infill extension following the demolition of existing lean to extension. Raising of existing rear extension roof. Conversion of existing store room to bin storage area with new double doors

    Awaiting decision Full applications Extension Demolition 19 docs
    Small domestic

  • 62 Capel Road Barnet EN4 8JE

    26/1337/192 Submitted 10 Apr 2026 150 yards away

    Erection of a rear outbuilding

    Granted Lawful development 7 docs

  • Winston House 53 - 63 Church Hill Road Barnet EN4 8SZ

    26/0862/LIC Submitted 6 Mar 2026 150 yards away

    Removal and replacement of 3no. antennas, the relocation of 1no. existing GPS node and other associated ancillary development thereto

    Decided

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