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Planning application

20 Oak Grove London NW2 3LP

Refused Barnet 25/4228/192 Proposed Lawful Development Certificate

Works: Extension Loft or dormer

Refused. Only the applicant can appeal, within the statutory time limit, and a revised scheme can be submitted instead.

Proposal

Roof extension involving L shaped dormer with juliette balcony

As published by the council, reference 25/4228/192

Application record

Reference
25/4228/192
Type
Proposed Lawful Development Certificate
Status
Unlawful
Decision
Refused As published: Unlawful
Received
22 Oct 2025
Validated
23 Oct 2025
Decided
18 Nov 2025
Ward
Cricklewood
Decision by
Delegated Decision
Postcode
NW2 3LP

Site history

Applications at this address on the Barnet register

This site has had 3 applications since 2025: 0 approved, 1 refused.

  • 26/1540/RCU Awaiting decision

    20 Oak Grove London NW2 3LP

    Change of use of the property from a single family dwelling (Class C3) to a 7 bed House in Multiple Occupation (HMO) (Sui Generis). (Retrospective application) Proposed roof extension involving L shaped dormer with juliette balcony

    Submitted 24 Apr 2026 Amendments
  • 25/5047/192 Awaiting decision

    20 Oak Grove London NW2 3LP

    Roof extension involving L shaped dormer with juliette balcony

    Submitted 16 Dec 2025 Lawful development

Timeline

Dates from the published record

  1. 22 Oct 2025

    Received by Barnet

  2. 23 Oct 2025

    Validated

    Checked as complete and ready for consideration.

  3. 18 Nov 2025

    Decision issued: Unlawful

  4. 10 Aug 2026

    Added to PlanIndex

Who's behind it

Company information only, from the register and Companies House

Oakman Architectural Consultants Ltd Agent, an architecture practice registered in Uxbridge

Active · incorporated 2022 · Uxbridge

28 applications on PlanIndex · across 8 councils · 77% granted

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Documents

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

14 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 refusal means

Barnet refused this application for the reasons on the decision notice; only the applicant can appeal, and refused schemes often return in revised form. 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

  • 20 Oak Grove London NW2 3LP

    26/1540/RCU Submitted 24 Apr 2026 50 yards away

    65% historically approved · decision due ~22 Jun

    Change of use of the property from a single family dwelling (Class C3) to a 7 bed House in Multiple Occupation (HMO) (Sui Generis). (Retrospective application) Proposed roof extension involving L shaped dormer with juliette balcony

    Awaiting decision Amendments Extension Loft or dormer 20 docs
    Domestic

  • 20 Oak Grove London NW2 3LP

    25/5047/192 Submitted 16 Dec 2025 50 yards away

    80% historically approved · decision due ~10 Feb

    Roof extension involving L shaped dormer with juliette balcony

    Awaiting decision Lawful development Extension Loft or dormer 12 docs

  • 15 Elm Grove London NW2 3AE

    25/4507/FUL Submitted 12 Nov 2025 50 yards away

    63% historically approved · decision due ~7 Jan

    Change of use from a single dwellinghouse (Use Class C3) to a HMO (House in Multiple Occupation (Use Class C4) for up to 6 people

    Awaiting decision Full applications 15 docs
    Domestic

  • 15 Elm Grove London NW2 3AE

    26/3074/RCU Submitted 21 Aug 2026 50 yards away

    78% historically approved · decision due ~16 Oct

    Change of use from a single dwellinghouse (Use Class C3) to a HMO (House in Multiple Occupation (Use Class C4) for up to 6 people (Retrospective Application)

    Decided
    Domestic

  • 31 Elm Grove London NW2 3AE

    26/3434/CON Submitted 21 Sep 2026 50 yards away

    78% historically approved · decision due ~20 Nov

    Submission of details of conditions 3 (Pre-completion Sound Insulation Test Certificates) 4 (Refuse/recycling storage) 5 (Cycle parking storage) 9 (Amenity space sub-division) pursuant to planning permission 24/2636/FUL dated 03/07/2024

    Awaiting decision

  • 27 Elm Grove London NW2 3AE

    25/5028/RCU Submitted 15 Dec 2025 50 yards away

    65% historically approved · decision due ~3 Mar

    Change of use from a single dwellinghouse (Use Class C3) to a 6 bed HMO (House in Multiple Occupation (Use Class C4) (Retrospective Application) Associated refuse/recycling and cycle storage

    Awaiting decision Amendments 7 docs
    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