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Planning application

21 Gascony Avenue London Camden NW6 4NB

Granted Camden 2026/0729/P Certificate of Lawfulness (Proposed)

Works: Loft or dormer Windows or glazing

Permission granted. Work must normally begin within three years of the decision or the permission lapses.

Proposal

Erection of a rear dormer window and 2 x front facing roof lights

As published by the council, reference 2026/0729/P

Application record

Reference
2026/0729/P
Type
Certificate of Lawfulness (Proposed)
Status
Final Decision
Decision
Granted
Received
24 Feb 2026
Validated
25 Feb 2026
Decided
17 Mar 2026
Ward
Kilburn
Decision by
Delegated
Postcode
NW6 4NB

Site history

Applications at this address on the Camden register

This site has had 3 applications since 2025: 2 approved, 0 refused.

  • 2025/5687/P Granted

    21 Gascony Avenue London Camden NW6 4NB

    Erection of a single story rear/side extension with new windows and rooflights and removal of a side window on the first floor and installation of a new metal balustrade to existing rear terrace.

    Decided 27 Jan 2026 Householder
  • 2025/3416/P Awaiting decision

    21 Gascony Avenue London Camden NW6 4NB

    Erection of a single storey rear/side infill extension and removal of a side window on the first floor.

    Full applications

Timeline

Dates from the published record

  1. 24 Feb 2026

    Received by Camden

  2. 25 Feb 2026

    Validated

    Checked as complete and ready for consideration.

  3. 17 Mar 2026

    Decision issued: Granted

  4. 9 Aug 2026

    Added to PlanIndex

Documents

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

4 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.

Trade members open them from here.

Open the documents

What this grant of permission means

Camden granted permission on 17 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 500 metres

  • 21 Gascony Avenue London NW6 4NB

    2019/4264/P 8m away

    Amalgamation of two flats into single dwelling house (Class C3)

    Granted Full applications New dwelling
    Several homes

  • Flat C 23 Gascony Avenue London NW6 4NB

    2018/0181/P 11m away

    Erection of rear dormer window, replacement of second floor window with juliet balcony to rear elevation and installation of 2 no. rooflights to flat

    Granted Full applications Loft or dormer Windows or glazing

  • Former Flat 2nd and 3rd Floor 25 Gascony Avenue London NW6 4NB

    2017/0366/P 14m away

    Enlargement of rear extension at second floor level to incorporate part of existing roof terrace, new enlarged dormer extension to the rear roof slope to provide ancillary residential floorspace for the existing maisonette on the second and third floors (Class C3).

    Granted Full applications Extension Loft or dormer

  • 15 Gascony Avenue London Camden NW6 4NB

    2024/2126/P 16m away

    Replacement of all existing windows and rear doors and replacement with new timber double glazed windows and timber double glazed doors.

    Granted Full applications Windows or glazing

  • Flat 2nd And 3rd Floor 27 Gascony Avenue London Camden NW6 4NB

    2024/1637/P Submitted 25 Apr 2024 21m away

    Erection of single-storey rear extension at second floor level; installation of dormers to front and rear roof slopes

    Granted Full applications Extension Loft or dormer 13 docs
    Small domestic

  • Flat 2nd and 3rd Floor 27 Gascony Avenue London NW6 4NB

    2023/2368/P Submitted 8 Jun 2023 21m away

    Erection of single storey rear extension at second floor level with access to existing roof terrace; enlargement of rear dormer.

    Granted Full applications Extension Loft or dormer 15 docs
    Small domestic

In Camden

  • 2026/3669/P Awaiting decision

    64 Westcroft Close London NW2 2RR

    Demolition of existing conservatory and erection of a single storey rear extension.

    26 Aug 2026 Lawful development
  • 2026/3405/P Granted

    Flat A and Flat B 23 Ravenshaw Street London NW6 1NP

    Amalgamation of Flat 23A and Flat 23B to form one dwellinghouse (Use Class C3), including, insofar as required, the change of use of Flat 23B from a small house in multiple occupation (Use Class C4) to a dwellinghouse (Use Class C3), together with removal of an internal blockwork partition wall.

    3 Aug 2026 Lawful development
  • 2026/3591/P Awaiting decision

    22 Ulysses Road London NW6 1EE

    Erection of an outbuilding within rear garden.

    21 Aug 2026 Lawful development
  • 2026/3566/P Awaiting decision

    41 & 43 King Henry's Road London NW3 3QR

    Subdivision and use of the buildings as two separate residential dwellings.

    19 Aug 2026 Lawful development
  • 2026/3527/P Awaiting decision

    303 Flat Ground Floor Rear Studio West End Lane London Camden NW6 1RD

    Use of ground floor studio flat as single dwelling unit (Class C3)

    18 Aug 2026 Lawful development