17 Lyonsdown Avenue Barnet EN5 1DU Data via plota.co.uk

26/2929/HSE - Householder Application Approved
DemolitionExtensions & alterations

Proposal

Single storey front/side extension following demolition of the existing garage and the insertion of 1No front window (AMENDED DESCRIPTION) Data via plota.co.uk

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View original council record ↗Last checked

Application progress

✓
Received
7 Aug 2026
✓
Validated
10 Aug 2026
✓
Consultation
27 Aug 2026
✓
Approved
26 Oct 2026

Approved on 26 Oct 2026 · Committee Decision · Last checked 27 Oct 2026

Documents 11

Decision & officer reports 1

PDF DN: APPROVE HSE WITH CONDS Decision Notice · 26 Oct 2026 View ↗

Plans & drawings 4

PDF EXISTING Drawing · 7 Aug 2026 View ↗ PDF PROPOSED ELEVATIONS Drawing · 7 Aug 2026 View ↗ PDF PROPOSED FLOOR PLANS/SECTION Drawing · 7 Aug 2026 View ↗ PDF THE LOCATION PLAN Site Location Plan · 7 Aug 2026 View ↗

Application forms 3

PDF APPLICATION FORM Application Form · 18 Sept 2026 View ↗ PDF APPLICATION FORM - WITHOUT PERSONAL DATA Application Form · 7 Aug 2026 View ↗ PDF COMMUNITY INFRASTRUCTURE LEVY - COMPLETED FORM CIL Document · 7 Aug 2026 View ↗

Other documents 3

IMG SITE NOTICE Photo · 28 Sept 2026 View ↗ PDF SITE NOTICE Photo · 28 Sept 2026 View ↗ IMG SITE NOTICE Photo · 28 Sept 2026 View ↗

All documents on the council site ↗

Site constraints 5

Article 4 direction
Article 4 Small Houses in Multiple Occupation (HMO) Area 1. Named permitted development rights are withdrawn here.
An Article 4 direction withdraws particular permitted development rights, so work that would normally need no application needs one here. Not every council has published its directions.
Air quality management area: Barnet AQMA
The council has declared the area as failing an air quality objective.
Schemes that add traffic, parking or combustion plant are assessed against the area's action plan and may need an air quality assessment.
Council record ↗
Also on the record
Inside the Barnet built-up area; Public transport access: PTAL 2 (poor), TfL 2023, for the 100 m square; Priority habitat 36 m away: No main habitat but additional habitats present.
Not affected
Outside flood zones 2 and 3 · Not green belt · No listed building at the site

Checked on 6 October 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.

Sales history 2

Last sold for £760,000 in October 2011. Semi-detached house, freehold.

28 October 2011£760,000
27 July 1998£277,500

Sale prices from HM Land Registry's price paid record, matched to this application by its address.

Building

Floor area160 m² (1,722 sq ft)
Energy ratingC (74 out of 100), could reach B
PropertySemi-detached house, 7 habitable rooms
Built1930 to 1949
HeatingBoiler and radiators, mains gas
WallsSolid brick, as built, no insulation (assumed)

From the energy performance certificate lodged in November 2023, the latest held for this property. The building may have changed since. View the certificate

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Other new applications on this street

13 Jul 2026Approved

59 Lyonsdown Avenue Barnet EN5 1DX

Single storey side extension to provide bike store. Addition of a canopy above s...

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Nearby new applications

26 Oct 2026Pending

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19 Oct 2026Pending

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16 Oct 2026Pending

82 Lyonsdown Road Barnet EN5 1JL

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Important details

Council
Barnet
Application type
Householder Application
Postcode
EN5 1DU
Received
7 Aug 2026
Validated
10 Aug 2026
Ward
Barnet Vale
Case officer
Show
Target decision
30 Oct 2026
Decision
Approve subject to conditions
Decision date
26 Oct 2026
Decision level
Committee Decision
Applicant
Show
Agent
drawnplans.co.uk

How this decision compares

Decided in 77 days from validation, 22 days slower than Barnet's median of 55 for demolitions. Approved, as 74% of demolitions here are.

79%decided within 8 weeks
74%approved
259decided in the last year

Plota live figures for demolitions decided by Barnet in the last twelve months, from validation. Barnet decision record →

Public comments

No public comments yet.

Last counted 27 Oct 2026

Read the comments on the council site ↗

Consultation & key dates

Alt. reference
PP-15023873
Planning Portal ref
PP-15023873
Comments by
17 Sept 2026
Site or press notice
27 Aug 2026
Committee
14 Oct 2026
Statutory expiry
5 Oct 2026

Historical activity at this location

25 nearby applications on record - archival context, not part of the live application.

Within ~100m

Nearby activity

2023 Refused
29 Lyonsdown Avenue Barnet EN5 1DU
Erection of a rear outbuilding
23/1414/192
2022 Approved
19 Lyonsdown Avenue Barnet EN5 1DU
Roof extension involving infill between two rear dormers following removal of existing ch…
22/3311/192
2021 Withdrawn
2 Lyonsdown Avenue Barnet EN5 1DU
Single storey rear extension
21/2893/HSE
2021 Approved
4 Lyonsdown Avenue Barnet EN5 1DU
1 x Horse Chestnut - Reduce by 2M and Thin by 20%. T43 of Tree Preservation Order
TPP/0058/21
2021 Approved
29 Lyonsdown Avenue Barnet EN5 1DU
1 x Oak (fallen) - Remove. T12 of Tree Preservation Order
TPF/0115/21
2020 Approved
2 Lyonsdown Avenue Barnet EN5 1DU
Single storey rear extension
20/6266/192
2020 Approved
2 Lyonsdown Avenue Barnet EN5 1DU
Single storey rear extension with a proposed depth of 6.00 metres from original rear wall…
20/5368/PNH
2020 Refused
2 Lyonsdown Avenue Barnet EN5 1DU
2no single storey rear extensions . The first extension, has a proposed depth of 6.00 met…
20/4232/PNH
2020
2 Lyonsdown Avenue Barnet EN5 1DU
Single storey rear extension with a proposed depth of 6.00 metres from original rear wall…
20/3170/PNH
2020 Approved
7 The Drive Barnet EN5 1DZ
Demolition of existing rear extension. Erection of a single storey rear extension and alt…
20/1855/HSE
2020 Approved
18 Lyonsdown Avenue Barnet EN5 1DU
Single storey side/rear extension (amended description)
20/1309/HSE
2020 Approved
2 Lyonsdown Avenue Barnet EN5 1DU
Erection of a rear outbuilding
20/1238/192
2019 Refused
5 Lyonsdown Avenue Barnet EN5 1DU
Single storey side extension and part single, part two storey rear extensions. Extension…
19/0849/HSE
2019 Refused
2 Lyonsdown Avenue Barnet EN5 1DU
Demolition of existing garage. Erection of a two storey side extension to create a new dw…
19/3532/FUL
2019 Approved
Longmore Avenue Boundary Of 2 Lyonsdown Avenue Barnet EN5 1DU
1 x Oak (applicant's ref. 44) - Shape and Reduce crown by up to 3m not exceeding a 30% re…
TPP/0468/19
2018 Approved
6 Lyonsdown Avenue Barnet EN5 1DU
Single storey side/rear extension
18/7217/HSE
2018 Refused
2 Lyonsdown Avenue Barnet EN5 1DU
Single storey rear extension with a proposed depth of 6 metres from original rear wall, e…
18/6603/PNH
2018 Refused
6 Lyonsdown Avenue Barnet EN5 1DU
Single storey rear extension with a proposed depth of 1.5 metres from original rear wall…
18/6388/PNH
2018 Approved
105 Longmore Avenue Barnet EN5 1JU
Erection of rear outbuilding
18/5120/HSE
2018 Approved
2 Lyonsdown Avenue Barnet EN5 1DU
Extension to roof including hip to gable, and 1no rear dormer window and 2no rooflights t…
18/5108/192
2017 Approved
5 Lyonsdown Avenue Barnet EN5 1DU
Single storey side extension and part single, part two storey rear extensions. New access…
17/6566/HSE
2017 Approved
21 Lyonsdown Avenue Barnet EN5 1DU
Erection of rear outbuilding
17/6826/192
2017 Approved
25 Lyonsdown Avenue Barnet EN5 1DU
Part single, part two storey side extension. Single storey rear extension. Replacement of…
17/5684/HSE
2017 Approved
25 Lyonsdown Avenue Barnet EN5 1DU
1 x Oak (applicant's ref. T1) - Reduce by 30%, (remove deadwood). T7 of Tree Preservation…
TPP/0520/17
2016 Approved
15 Lyonsdown Avenue Barnet EN5 1DU
Two-storey side extension at basement and ground floor levels. Alteration to rear terrace…
16/8058/HSE
Barnet
Planning Authority Score
6.2/10
Average
#90 of 296 councils
Relevant to this application:
Householder decisions

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.

One of the strictest councils
only 82% approved vs 90% nationally
These figures are council-wide context, not a prediction for this application. View full council performance
Barnet decision statistics
Based on MHCLG data, the year to March 2026
75%
Overall approval rate
Below avg (87%) #285 of 296
82%
Householder approved
Below avg (90%) #264 of 296
79%
Decided in 8 weeks
Above avg (63%) #42 of 296
25%
Extended time limit
Below avg (41%) #29 of 296
55%
Minor dwellings approved
319 decided (1-9 homes)
90%
Major dwellings approved
21 decided (10+ homes)
41%
Change of use approved
132 decided
2,541
Total decisions
625 refused in the year to March 2026
Source: MHCLG planning statistics · See full council rankings

Sale prices: Contains HM Land Registry data © Crown copyright and database right 2026. This data is licensed under the Open Government Licence v3.0.

Freehold boundary: © Crown copyright and database rights 2026, HM Land Registry. Polygons © Crown copyright and database rights 2026 Ordnance Survey 100026316. Conditions of use

Energy performance: Energy performance certificates from the Energy Performance of Buildings Register, Ministry of Housing, Communities and Local Government. Contains public sector information licensed under the Open Government Licence v3.0. © Crown copyright 2026.