Planning application
18 Athenaeum Road London N20 9AE
Works: Extension Loft or dormer Windows or glazing 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 rear extension with 2no. rooflights. Roof extension involving rear dormer window 2no. front facing rooflights and new side gable window
As published by the council, reference 26/0820/192
Application record
- Reference
- 26/0820/192
- Type
- Proposed Lawful Development Certificate
- Status
- Lawful
- Decision
- Lawful
- Received
- 4 Mar 2026
- Validated
- 5 Mar 2026
- Decided
- 29 Apr 2026
- Ward
- Whetstone
- Decision by
- Delegated Decision
- Postcode
- N20 9AE
Site history
Applications at this address on the Barnet register
This site has had 4 applications since 2026: 1 approved, 0 refused.
-
26/2902/PNH Decided
18 Athenaeum Road London N20 9AE
Single storey rear extension with a proposed depth of 4.00 metres, maximum height of 3.50 metres and eaves height of 2.50 metres.
-
26/2083/HSE Awaiting decision
18 Athenaeum Road London N20 9AE
Two storey side extension following demolition of the existing garage
-
26/1893/PNH Withdrawn
18 Athenaeum Road London N20 9AE
Single storey rear extension with a proposed maximum depth of 6.0m, a maximum height of 2.95m and an eaves height of 2.85m
Timeline
Dates from the published record
-
4 Mar 2026
Received by Barnet
-
5 Mar 2026
Validated
Checked as complete and ready for consideration.
-
29 Apr 2026
Decision issued: Lawful
-
25 Jul 2026
Added to PlanIndex
Who's behind it
Company information only, from the register and Companies House
TheDesignConsultant Ltd Agent, registered in London
Active · incorporated 2025 · London
2 applications on PlanIndex
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
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.
Trade members open them from here.
Open the documentsWhat this grant of permission means
Barnet granted permission on 29 April 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
-
18 Athenaeum Road London N20 9AE
Single storey rear extension with a proposed maximum depth of 6.0m, a maximum height of 2.95m and an eaves height of 2.85m
Withdrawn Prior approval Extension 8 docsSmall domestic -
18 Athenaeum Road London N20 9AE
77% historically approved · decision due ~21 Aug
Two storey side extension following demolition of the existing garage
Awaiting decision Householder Extension Demolition 6 docsDomestic -
18 Athenaeum Road London N20 9AE
58% historically approved · decision due ~1 Oct
Single storey rear extension with a proposed depth of 4.00 metres, maximum height of 3.50 metres and eaves height of 2.50 metres.
Decided Prior approval ExtensionSmall domestic -
16 Oxford Gardens London N20 9AG
77% historically approved · decision due ~18 Feb
Single storey side/rear extension with 3no. rooflights with new patio area. New front porch. Conversion of the existing garage into habitable room insertion of window to replace garage door. New side boundary fencing
Awaiting decision Householder Extension Loft or dormer +1 8 docsSmall domestic -
52 Oakleigh Gardens London N20 9AB
Variation of condition 1 (Approved plans) 3 (Materials) pursuant to planning permission 25/1604/HSE dated 05/06/2025 for `Roof extension involving rear dormer window and 2no. front facing rooflights.` Amendments include change of material on the rear elevation from tile to zinc
Granted Conditions Extension Loft or dormer +1 8 docs -
52 Oakleigh Gardens London N20 9AB
69% historically approved · decision due ~7 Apr
Non material amendment to planning permission 25/1604/HSE dated 05/06/2025 for `Roof extension involving rear dormer window and 2no. front facing rooflights.` Amendments include change of material on the rear elevation from tile to zinc
Awaiting decision Amendments Extension Loft or dormer +1 3 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).
-
26/1907/191 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)
-
26/2059/192 Refused
Low Ridge Rowley Lane Barnet EN5 3HS
Erection of a rear outbuilding
-
26/2066/192 Granted
355 Hendon Way London NW4 3NB
Roof extension involving rear dormer window and 3no. front facing rooflights. Removal of chimney on rear elevation (AMENDED DESCRIPTION)
-
26/2525/192 Granted
39 Ridgeway Avenue Barnet EN4 8TN
Single storey rear extension