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Planning application

144 Hendon Lane London N3 3PS

Granted Barnet 26/1000/192 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 partial hip to gable, rear dormer windows, 3no. front facing rooflights and new side gable window

As published by the council, reference 26/1000/192

Application record

Reference
26/1000/192
Type
Proposed Lawful Development Certificate
Status
Lawful
Decision
Granted As published: Lawful
Received
16 Mar 2026
Validated
17 Mar 2026
Decided
19 Mar 2026
Ward
Finchley Church End
Decision by
Delegated Decision
Postcode
N3 3PS

Site history

Applications at this address on the Barnet register

This site has had 2 applications since 2026: 2 approved, 0 refused.

  • 26/1742/HSE Granted

    144 Hendon Lane London N3 3PS

    Two storey rear extension alterations to the existing raised patio area and access steps. Single storey front infill extension

    Decided 6 Jul 2026 Householder

Timeline

Dates from the published record

  1. 16 Mar 2026

    Received by Barnet

  2. 17 Mar 2026

    Validated

    Checked as complete and ready for consideration.

  3. 19 Mar 2026

    Decision issued: Lawful

  4. 25 Jul 2026

    Added to PlanIndex

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

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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.

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What this grant of permission means

Barnet granted permission on 19 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

  • 144 Hendon Lane London N3 3PS

    26/1742/HSE Submitted 11 May 2026 50 yards away

    Two storey rear extension alterations to the existing raised patio area and access steps. Single storey front infill extension

    Granted Householder Extension 8 docs
    Small domestic

  • 148 Hendon Lane London N3 3PS

    26/3520/CON Submitted 28 Sep 2026 50 yards away

    78% historically approved · decision due ~23 Nov

    Submission of details of condition 8 (Levels) 9 (Tree Protection) pursuant to planning permission 26/2048/HSE dated 28/07/2026

    Awaiting decision Trees

  • 148 Hendon Lane London N3 3PS

    26/2048/HSE Submitted 2 Jun 2026 50 yards away

    Roof extension with 3no. rear dormer windows and 2no. front facing rooflights. Single storey side and rear extension with 2no. lantern rooflights. Two storey side extension following demolition of existing chimney. Alterations to external levels. New rear Patio. Front infill extension to create wider garage. Alterations to roof of front porch and garage. Creation of a first floor rear Juliette balcony. (Amended Description)

    Granted Householder Extension Loft or dormer +2 12 docs
    Small domestic

  • 22 Waverley Grove London N3 3PX

    26/1158/HSE Submitted 26 Mar 2026 100 yards away

    Single storey side/rear extension following demolition of the existing conservatory. Alteration to the existing patio area. Conversion of the existing garage into habitable room, insertion of window to replace the garage door

    Granted Householder Extension Demolition +1 11 docs
    Small domestic

  • 22 Crooked Usage London N3 3HB

    TPP/0314/26 Submitted 2 Jun 2026 150 yards away

    1 x Monterey Cypress (applicants ref. T1) - Fell to ground level. Standing in T17 of Tree Preservation.

    Granted Trees 4 docs

  • 31 Allandale Avenue London N3 3PY

    26/2799/CON Submitted 29 Jul 2026 250 yards away

    78% historically approved · decision due ~23 Sep

    Submission of details of condition 7 (Levels) 8 (Excavation for services) 9 (Tree Protection & Method Statement) 10 (Details of Foundations) pursuant to planning permission 26/1837/HSE dated 07/07/2026

    Decided Trees

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