Planning application
29 Monks Avenue Barnet EN5 1BZ
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 hip to gable, rear dormer window and 3no. front facing rooflights
As published by the council, reference 26/0605/192
Application record
- Reference
- 26/0605/192
- Type
- Proposed Lawful Development Certificate
- Status
- Lawful
- Decision
- Granted As published: Lawful
- Received
- 17 Feb 2026
- Validated
- 17 Feb 2026
- Decided
- 5 Mar 2026
- Ward
- Barnet Vale
- Decision by
- Delegated Decision
- Postcode
- EN5 1BZ
Site history
Applications at this address on the Barnet register
This site has had 3 applications since 2026: 1 approved, 0 refused.
-
26/3800/HSE Awaiting decision
29 Monks Avenue Barnet EN5 1BZ
Single storey side and rear infill extension including new front porch following demolition of the side/rear storage.
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26/1299/HSE Awaiting decision
29 Monks Avenue Barnet EN5 1BZ
Single storey side and rear infill extension including new front porch following demolition of the side/rear storage. Demolition of the side/rear storage and erection of a single storey infill rear and side extension including the front porch Demolition of the side/rear storage and erection of a single storey infill rear and side extension including the front porch
Timeline
Dates from the published record
-
17 Feb 2026
Received by Barnet
-
5 Mar 2026
Decision issued: Lawful
-
10 Aug 2026
Added to PlanIndex
Who's behind it
Company information only, from the register and Companies House
NewT design&build Ltd Agent, a design practice
35 applications on PlanIndex · across 10 councils · 87% 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
8 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 this grant of permission means
Barnet granted permission on 5 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
-
29 Monks Avenue Barnet EN5 1BZ
77% historically approved · decision due ~3 Jun
Single storey side and rear infill extension including new front porch following demolition of the side/rear storage. Demolition of the side/rear storage and erection of a single storey infill rear and side extension including the front porch Demolition of the side/rear storage and erection of a single storey infill rear and side extension including the front porch
Awaiting decision Householder Extension Demolition 9 docsSmall domestic -
29 Monks Avenue Barnet EN5 1BZ
77% historically approved · decision due ~15 Dec
Single storey side and rear infill extension including new front porch following demolition of the side/rear storage.
Awaiting decision Householder Extension DemolitionSmall domestic -
17 Lyonsdown Avenue Barnet EN5 1DU
77% historically approved · decision due ~5 Oct
Single storey front/side extension following demolition of the existing garage and the insertion of 1No front window (AMENDED DESCRIPTION)
Awaiting decision Householder Extension Demolition +1Small domestic -
41 Lyonsdown Avenue Barnet EN5 1DX
Single storey rear extension with new lowered patio area and associated access steps. New hard and soft landscaping. Conversion of the existing garage into habitable room, insertion of window to replace garage door
Refused Householder Extension Windows or glazing 17 docsSmall domestic -
41 Lyonsdown Avenue Barnet EN5 1DX
77% historically approved · decision due ~9 Feb
Single storey rear extension with new raised patio area and associated access steps
Awaiting decision Householder Extension 13 docsSmall domestic -
Flats A, B And C 24 Netherlands Road Barnet EN5 1BW
93% historically approved · decision due ~11 Nov
Variation of condition 2 (Approved Plans) pursuant to planning appeal APP/N5090/W/25/3362709 dated 17.06.2025 Planning ref 24/4921/FUL for `Erection of a rear outbuilding. Associated changes to landscaping, boundary treatments and the onsite parking' Variation to include alterations to the roof form over the approved outbuilding, to facilitate an alternative design, now showing a crown style roof
Awaiting decision Conditions 17 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)
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26/2392/192 Refused
6 Mostyn Road Edgware HA8 0JD
New front hardstanding and vehicular access to provide off-street parking
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26/2059/192 Refused
Low Ridge Rowley Lane Barnet EN5 3HS
Erection of a rear outbuilding