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Planning application

145 Chase Side London N14 5HE

Awaiting decision Barnet 26/0485/192 Proposed Lawful Development Certificate

Works: Extension Loft or dormer Windows or glazing

Still open. Anyone can comment while the consultation period runs, and comments go to the council rather than to us.

Proposal

Roof extension involving extension involving rear dormer window and new side gable window

As published by the council, reference 26/0485/192

Application record

Reference
26/0485/192
Type
Proposed Lawful Development Certificate
Status
Pending Consideration
Received
9 Feb 2026
Validated
9 Feb 2026
Ward
Brunswick Park
Postcode
N14 5HE

Site history

Applications at this address on the Barnet register

This site has had 2 applications since 2026.

  • 26/3284/HSE Awaiting decision

    145 Chase Side London N14 5HE

    Single storey rear extension. New first floor rear window

    Submitted 9 Sep 2026 Householder

Timeline

Dates from the published record

  1. 9 Feb 2026

    Received by Barnet

  2. 10 Aug 2026

    Added to PlanIndex

  3. Decision

    Awaiting decision

    Decision expected by 6 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.

Who's behind it

Company information only, from the register and Companies House

HK Architects Agent, an architecture practice registered in Barnet

Active · incorporated 2015 · Barnet

21 applications on PlanIndex · across 5 councils · 75% 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 happens while it is decided

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.

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

  • 186 Chase Side London N14 5HN

    26/1760/NAC Submitted 11 May 2026 100 yards away

    Change of use from HMO-house of multiple occupation (Sui Generis) into 7 selfcontained flats (Class C3), involving four storey front/side extension, with part single, part 3 - storey rear extensions, with lower ground floor, conversion of garage into habitable room, extension to roof at sides to form dormers, with front and rear rooflights

    Granted Outline New dwelling Extension +1 1 doc

  • 186 Chase Side London N14 5HN

    26/0828/NAC Submitted 4 Mar 2026 100 yards away

    Change of use from house of multiple occupation (Sui Generis) into 7 self-contained flats, involving four storey front/side extension, with part single, part 3- storey rear extensions, conversion of garage into habitable room, extension to roof at side to form gable end, with front and rear rooflights

    Granted Outline New dwelling Extension +1 1 doc

  • 186 Chase Side London N14 5HN

    26/01745/FUL Submitted 30 Apr 2026 100 yards away

    Change of use from HMO-house of multiple occupation (Sui Generis) into 7 self-contained flats (Class C3), involving four storey front/side extension, with part single, part 3- storey rear extensions, with lower ground floor, conversion of garage into habitable room, extension to roof at sides to form dormers, with front and rear rooflights.

    Granted Full applications New dwelling Extension +1 23 docs

  • 11 Oakdale London N14 5RA

    25/4192/CON Submitted 20 Oct 2025 100 yards away

    Submission of details of condition 5 (Driveway) pursuant to planning permission 23/4870/HSE dated 24/01/2024

    Granted Conditions 4 docs

  • Land Rear Of 184 Chase Side London N14 5HN

    20/02484/NMA Submitted 6 Aug 2020 100 yards away

    Non-material amendment to 18/04262/FUL to allow two detached houses.

    Refused Amendments 8 docs

  • 173 Chase Side, Southgate, N14 5HE

    24/01229/OA Submitted 12 Apr 2024 150 yards away

    Alterations to existing vehicular hardstanding and widening of existing access

    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