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Planning application

29 Monks Avenue Barnet EN5 1BZ

Granted Barnet 26/0605/192 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 and 3no. front facing rooflights

As published by the council, reference 26/0605/192

Application record

Reference
26/0605/192
Type
Proposed Lawful Development Certificate
Status
Lawful
Decision
Granted As published: Lawful
Received
17 Feb 2026
Validated
17 Feb 2026
Decided
5 Mar 2026
Ward
Barnet Vale
Decision by
Delegated Decision
Postcode
EN5 1BZ

Site history

Applications at this address on the Barnet register

This site has had 3 applications since 2026: 1 approved, 0 refused.

  • 26/3800/HSE Awaiting decision

    29 Monks Avenue Barnet EN5 1BZ

    Single storey side and rear infill extension including new front porch following demolition of the side/rear storage.

    Submitted 20 Oct 2026 Householder
  • 26/1299/HSE Awaiting decision

    29 Monks Avenue Barnet EN5 1BZ

    Single storey side and rear infill extension including new front porch following demolition of the side/rear storage. Demolition of the side/rear storage and erection of a single storey infill rear and side extension including the front porch Demolition of the side/rear storage and erection of a single storey infill rear and side extension including the front porch

    Submitted 8 Apr 2026 Householder

Timeline

Dates from the published record

  1. 17 Feb 2026

    Received by Barnet

  2. 5 Mar 2026

    Decision issued: Lawful

  3. 10 Aug 2026

    Added to PlanIndex

Who's behind it

Company information only, from the register and Companies House

NewT design&build Ltd Agent, a design practice

35 applications on PlanIndex · across 10 councils · 87% granted

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Documents

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

8 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 5 March 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

  • 29 Monks Avenue Barnet EN5 1BZ

    26/1299/HSE Submitted 8 Apr 2026 50 yards away

    77% historically approved · decision due ~3 Jun

    Single storey side and rear infill extension including new front porch following demolition of the side/rear storage. Demolition of the side/rear storage and erection of a single storey infill rear and side extension including the front porch Demolition of the side/rear storage and erection of a single storey infill rear and side extension including the front porch

    Awaiting decision Householder Extension Demolition 9 docs
    Small domestic
  • 29 Monks Avenue Barnet EN5 1BZ

    26/3800/HSE Submitted 20 Oct 2026 50 yards away

    77% historically approved · decision due ~15 Dec

    Single storey side and rear infill extension including new front porch following demolition of the side/rear storage.

    Awaiting decision Householder Extension Demolition
    Small domestic
  • 17 Lyonsdown Avenue Barnet EN5 1DU

    26/2929/HSE Submitted 7 Aug 2026 150 yards away

    77% historically approved · decision due ~5 Oct

    Single storey front/side extension following demolition of the existing garage and the insertion of 1No front window (AMENDED DESCRIPTION)

    Awaiting decision Householder Extension Demolition +1
    Small domestic
  • 41 Lyonsdown Avenue Barnet EN5 1DX

    26/1423/HSE Submitted 17 Apr 2026 200 yards away

    Single storey rear extension with new lowered patio area and associated access steps. New hard and soft landscaping. Conversion of the existing garage into habitable room, insertion of window to replace garage door

    Refused Householder Extension Windows or glazing 17 docs
    Small domestic
  • 41 Lyonsdown Avenue Barnet EN5 1DX

    25/5008/HSE Submitted 15 Dec 2025 200 yards away

    77% historically approved · decision due ~9 Feb

    Single storey rear extension with new raised patio area and associated access steps

    Awaiting decision Householder Extension 13 docs
    Small domestic
  • Flats A, B And C 24 Netherlands Road Barnet EN5 1BW

    25/3804/S73 Submitted 16 Sep 2025 200 yards away

    93% historically approved · decision due ~11 Nov

    Variation of condition 2 (Approved Plans) pursuant to planning appeal APP/N5090/W/25/3362709 dated 17.06.2025 Planning ref 24/4921/FUL for `Erection of a rear outbuilding. Associated changes to landscaping, boundary treatments and the onsite parking' Variation to include alterations to the roof form over the approved outbuilding, to facilitate an alternative design, now showing a crown style roof

    Awaiting decision Conditions 17 docs

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