Planning application
33 Kingsgate Avenue London N3 3DH
Works: Extension Loft or dormer Windows or glazing Small domestic
Read from the description, not a valuation. How we read the register
Still open. Anyone can comment while the consultation period runs, and comments go to the council rather than to us.
Proposal
Roof extension involving rear dormer window and 3no. front facing rooflights. New front porch and front window. Erection of a rear outbuilding with terrace area
As published by the council, reference 25/5029/192
Application record
- Reference
- 25/5029/192
- Type
- Proposed Lawful Development Certificate
- Status
- Pending Consideration
- Received
- 15 Dec 2025
- Validated
- 16 Dec 2025
- Ward
- Finchley Church End
- Postcode
- N3 3DH
Site history
Applications at this address on the Barnet register
This site has had 3 applications since 2025.
-
26/2232/HSE Decided
33 Kingsgate Avenue London N3 3DH
Part single, part two storey side and rear extension following demolition of existing single storey side extension. Roof extension including rear dormer window and 4no. front facing rooflights and 1no. rear facing rooflight. New front porch with an associated relocation of front door. Removal of 1no. chimney. Alterations to hard and soft landscaping including new rear terrace with associated level changes and provision of off-street parking space to front garden. Alterations to fenestration (Amended Description and Plans).
-
25/5179/PNH Awaiting decision
33 Kingsgate Avenue London N3 3DH
Single storey rear extension with a proposed depth of 5.00 metres, maximum height of 3.28 metres and eaves height of 2.91 metres.
Timeline
Dates from the published record
-
15 Dec 2025
Received by Barnet
-
16 Dec 2025
Validated
Checked as complete and ready for consideration.
-
10 Aug 2026
Added to PlanIndex
-
Decision
Awaiting decision
Decision expected by 10 February 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
Simon Miller Architects Ltd Agent, an architecture practice registered in London
Active · incorporated 2005 · London
30 applications on PlanIndex · across 4 councils · 92% 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
24 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 documentsWhat 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
-
33 Kingsgate Avenue London N3 3DH
56% historically approved · decision due ~3 Mar
Single storey rear extension with a proposed depth of 5.00 metres, maximum height of 3.28 metres and eaves height of 2.91 metres.
Awaiting decision Prior approval Extension 22 docsSmall domestic -
33 Kingsgate Avenue London N3 3DH
77% historically approved · decision due ~12 Aug
Part single, part two storey side and rear extension following demolition of existing single storey side extension. Roof extension including rear dormer window and 4no. front facing rooflights and 1no. rear facing rooflight. New front porch with an associated relocation of front door. Removal of 1no. chimney. Alterations to hard and soft landscaping including new rear terrace with associated level changes and provision of off-street parking space to front garden. Alterations to fenestration (Amended Description and Plans).
Decided Householder Extension Loft or dormer +2 31 docsSmall domestic -
76 Windermere Avenue London N3 3RA
65% historically approved · decision due ~9 Nov
Non material amendment to planning permission original ref 26/2420/HSE dated 24/08/2026 for 'Erection of a rear outbuilding including raised platform'. Amendments includes changes to landscape and levels
Awaiting decision Amendments -
76 Windermere Avenue London N3 3RA
77% historically approved · decision due ~24 Aug
Erection of a rear outbuilding including raised platform
Decided HouseholderSmall domestic -
Rear Of 37 Beechwood Avenue London N3 3BB
Demolition of existing garage. Erection of a two storey dwelling with rooms in the roofspace. Associated hard and soft landscaping, refuse/recycling and cycle store, amenity space and parking
Refused Full applications Demolition 25 docsDomestic -
35 Orchard Avenue London N3 3NL
80% historically approved · decision due ~2 Apr
Roof extension involving hip to gable, rear dormer window, 1no. rear and 2no. front facing rooflights and new side gable window
Awaiting decision Lawful development Extension Loft or dormer +1 7 docs
Other lawful development applications
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).
-
26/1362/191 Refused
145 Cotswold Gardens London NW2 1PL
Use as a House in Multiple Occupation (HMO) for 6 people
-
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)
-
26/2392/192 Refused
6 Mostyn Road Edgware HA8 0JD
New front hardstanding and vehicular access to provide off-street parking
-
26/2059/192 Refused
Low Ridge Rowley Lane Barnet EN5 3HS
Erection of a rear outbuilding