Planning application
31 Haslemere Avenue London NW4 2PU
Works: Extension Small domestic
Read from the description, not a valuation. How we read the register
Permission granted. Work must normally begin within three years of the decision or the permission lapses.
Proposal
Single storey front and side extension and part single, part two storey rear extension
As published by the council, reference 26/1092/HSE
Application record
- Reference
- 26/1092/HSE
- Type
- Householder Application
- Status
- Approved subject to conditions
- Decision
- Approve subject to conditions
- Received
- 23 Mar 2026
- Validated
- 23 Mar 2026
- Decided
- 13 May 2026
- Ward
- Hendon
- Decision by
- Delegated Decision
- Postcode
- NW4 2PU
Site history
Applications at this address on the Barnet register
This site has had 3 applications since 2026: 2 approved, 0 refused.
-
26/2487/HSE Decided
31 Haslemere Avenue London NW4 2PU
Single storey front extension with new porch with canopy and front bay window. Part single, part two storey side and rear wraparound extensions with new rear raised terrace area with access steps to garden, 1no. rooflight and new roof. New hardstanding and alteration to the existing vehicular access to off-street parking. New side gate. Roof extension involving hip to gable to both sides, rear dormer windows, 3no. front and 1no. rear facing rooflights and new side gable window. Changes to fenestration.
-
26/0503/192 Granted
31 Haslemere Avenue London NW4 2PU
Roof extension involving raised gables, rear dormer window, 3no. front facing rooflights and new side gable window
Timeline
Dates from the published record
-
23 Mar 2026
Received by Barnet
-
13 May 2026
Decision issued: Approve subject to conditions
-
25 Jul 2026
Added to PlanIndex
Who's behind it
Company information only, from the register and Companies House
advance building consultancy ltd Agent, registered in London
Active · incorporated 2014 · London
32 applications on PlanIndex · across 7 councils · 71% 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 recordDocuments
Plans, drawings, consultee responses and the officer's report
11 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 documentsWhat this grant of permission means
Barnet granted permission on 13 May 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 householder applications
Householder applications cover work to an existing house and its garden, such as extensions, lofts and outbuildings, and cannot create a separate dwelling or change what the building is used for. More in our guide to planning application types.
Nearby applications
Within 500 metres
-
31 Haslemere Avenue London NW4 2PU
Roof extension involving raised gables, rear dormer window, 3no. front facing rooflights and new side gable window
Granted Lawful development Extension Loft or dormer +1 5 docs -
31 Haslemere Avenue London NW4 2PU
77% historically approved · decision due ~26 Aug
Single storey front extension with new porch with canopy and front bay window. Part single, part two storey side and rear wraparound extensions with new rear raised terrace area with access steps to garden, 1no. rooflight and new roof. New hardstanding and alteration to the existing vehicular access to off-street parking. New side gate. Roof extension involving hip to gable to both sides, rear dormer windows, 3no. front and 1no. rear facing rooflights and new side gable window. Changes to fenestration.
Decided Householder Extension Loft or dormer +2Small domestic -
15 Haslemere Avenue London NW4 2PU
77% historically approved · decision due ~4 Sep
Single storey front, side and rear extension with new patio area. Two storey side and rear extension with first floor juliette balcony with glass balustrade
Awaiting decision Householder ExtensionSmall domestic -
15 Haslemere Avenue London NW4 2PU
80% historically approved · decision due ~26 Jun
Erection of a rear outbuilding
Awaiting decision Lawful development 4 docs -
93C Shirehall Park London NW4 2QU
79% historically approved · decision due ~19 Aug
Single storey side extension
Awaiting decision ExtensionSmall domestic -
89 And 91 Renters Avenue London NW4 3RD
61% historically approved · decision due ~8 Sep
Single storey rear extension to both properties
Decided Full applications ExtensionSmall domestic
Other householder applications
In Barnet
-
26/3422/HSE Awaiting decision
Revelstroke 28 Totteridge Village London N20 8JN
Construction of a swimming pool and associated hard and soft landscaping following demolition of the existing shed including new access steps. Alterations to the ground level. Replacement of an existing timber decking terrace with a paved terrace.
-
26/3396/HSE Awaiting decision
43 Dukes Avenue London N3 2DE
Single storey rear, part two storey side extension with 1no. rooflight following the demolition of existing shed. Roof extension with rear dormer window, 1no. front, 3no. side facing rooflights and roof windows to the front and side roof slopes. Installation of solar panels to side elevation of roof
-
26/3410/HSE Awaiting decision
54 Ferney Road Barnet EN4 8LE
Single storey rear extension with alteration to the raised terrace area including new access steps to garden
-
26/3415/HSE Awaiting decision
11 Downage London NW4 1AS
Alterations and extensions to the roof including rear dormer window and the partial removal of the roof of the first floor rear extension, creation of a new crown roof over main roof and rear extension, 1no. front, 1no. side, 1no. rear facing rooflight and 1no. on crown roof
-
26/3382/HSE Awaiting decision
11 Layfield Crescent London NW4 3UJ
Part single, part two storey rear extension with flat roof and 1no. skylight