78 Lyonsdown Road Barnet EN5 1JL Data via plota.co.uk
Proposal
Removal and alteration of existing roof above existing two storey side. (Phase 1) Roof extension involving hip to gable, rear dormer with juliette balcony, 3no. front facing rooflights and new side gable window. (Phase 2) Data via plota.co.uk
Application progress
Approved on 11 Feb 2026 · Delegated Decision · Last checked 10 Oct 2026
Documents 14
Decision & officer reports 2
Statements & assessments 1
Plans & drawings 10
Site constraints 4
Checked on 2 November 2026. Historic England, the Environment Agency, Natural England, Transport for London (public transport access levels, Powered by TfL Open Data, OGL v3.0, contains OS data © Crown copyright and database right 2025) and council datasets, Open Government Licence. A boundary can run through a site and the council holds the definitive record: confirm with the council before relying on this.
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Important details
How this decision compares
Decided in 54 days from validation, 26 days slower than Barnet's median of 28 for lawful development certificates. Approved, as 80% of lawful development certificates here are.
Plota live figures for lawful development certificates decided by Barnet in the last twelve months, from validation. Barnet decision record →
Public comments
No public comments yet.
Last counted 10 Oct 2026
Consultation & key dates
- Alt. reference
- PP-14579260
- Planning Portal ref
- PP-14579260
- Statutory expiry
- 13 Feb 2026
Historical activity at this location
27 previous applications on record - archival context, not part of the live application.
Previous applications at this address
Nearby activity
Barnet is faster than most councils at deciding householder applications, ranking #42 out of 296. Only 25% of applications have the time limit extended, well below the 41% national average - the council usually decides on time. Barnet is also one of the strictest councils - it refuses more householder applications than almost any other, with only 82% approved vs 90% nationally.
Freehold boundary: © Crown copyright and database rights 2026, HM Land Registry. Polygons © Crown copyright and database rights 2026 Ordnance Survey 100026316. Conditions of use
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78 Lyonsdown Road Barnet EN5 1JL
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