15 Lansdowne Road London N3 1ET Data via plota.co.uk

26/2047/HSE - Householder Application Approved
Extensions & alterations

Proposal

Single storey rear extension and extension to existing raised patio Data via plota.co.uk

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View original council record ↗Last checked

Application progress

✓
Received
2 Jun 2026
✓
Consultation
11 Jun 2026
✓
Approved
24 Jul 2026

Approved on 24 Jul 2026 · Delegated Decision · Last checked 8 Aug 2026

Documents 8

Decision & officer reports 1

PDF DN: APPROVE HSE WITH CONDS Decision Notice · 24 Jul 2026 View ↗

Plans & drawings 3

PDF EXISTING Drawing · 1 Jun 2026 View ↗ PDF PROPOSED FLOOR PLANS Drawing · 1 Jun 2026 View ↗ PDF PROPOSED ELEVATIONS Drawing · 1 Jun 2026 View ↗

Application forms 2

PDF APPLICATION FORM - WITHOUT PERSONAL DATA Application Form · 1 Jun 2026 View ↗ PDF COMMUNITY INFRASTRUCTURE LEVY - COMPLETED FORM CIL Document · 1 Jun 2026 View ↗

Other documents 2

IMG SITE NOTICE Photo · 19 Jun 2026 View ↗ IMG SITE NOTICE Photo · 19 Jun 2026 View ↗

All documents on the council site ↗

Site constraints 3

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 Named permitted development rights are withdrawn here.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.
Not affected
Outside flood zones 2 and 3 · Not green belt · No listed building at the site

Checked on 11 September 2026. Historic England, the Environment Agency, Natural England 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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Other new applications on this street

25 Aug 2026Pending

30 Lansdowne Road London N3 1ES

Roof extension involving rear dormer window with juliette balcony and 3no. front...

26/3129/192
28 Apr 2026Refused

50 Lansdowne Road London N3 1ES

Erection of a rear outbuilding with 3no. rooflights

26/1592/HSE

Nearby new applications

3 Sept 2026Pending

50 Ballards Lane London N3 2DP

Installation of a ground floor kitchen extraction ventilation system within exis...

26/3230/FUL
7 Sept 2026Pending

190 Nether Street London N3 1PE

Single storey rear extension. Conversion of the existing garage into habitable r...

26/3257/192
10 Aug 2026Pending

Hathaway House Popes Drive London N3 1QF

Mansard roof replacement and extension to provide additional storeys at 4th and ...

26/2958/FUL
1 Sept 2026Pending

39 Cornwall Avenue London N3 1LG

New front porch

26/3192/HSE
25 Aug 2026Pending

30 Lansdowne Road London N3 1ES

Roof extension involving rear dormer window with juliette balcony and 3no. front...

26/3129/192
25 Aug 2026Pending

30 Lansdowne Road London N3 1ES

Single storey rear extension with a proposed depth of 5.00 metres, maximum heigh...

26/3128/PNH

Important details

Council
Barnet
Application type
Householder Application
Postcode
N3 1ET
Received
2 Jun 2026
Validated
2 Jun 2026
Ward
Finchley Church End
Case officer
Show
Target decision
28 Jul 2026
Decision
Approve subject to conditions
Decision date
24 Jul 2026
Decision level
Delegated Decision
Applicant
Show
Agent
Lemberg Architecture and Design Ltd

How this decision compares

Decided in 52 days from validation, about the council's usual 53 days. Approved, as 74% of extensions here are.

87%decided within 8 weeks
74%approved
1,436decided in the last year

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

Public comments

No public comments yet.

Last counted 8 Aug 2026

Read the comments on the council site ↗

Consultation & key dates

Alt. reference
PP-14977757
Site or press notice
11 Jun 2026

Historical activity at this location

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

Within ~100m

Nearby activity

2025 Refused
21 Finchley Way London N3 1AG
New front boundary wall with associated piers and railings
25/2534/HSE
2023 Approved
50 Lansdowne Road London N3 1ES
Single storey rear extension with 3no. skylights. Roof extension involving rear dormer wi…
23/3725/192
2023 Approved
10 Finchley Way London N3 1AG
Roof extension including hip to gable, rear dormer window with juliette balcony and 3no…
23/0240/192
2022 Approved
10 Lansdowne Road London N3 1ES
Roof extension involving rear dormer and 3no. front facing rooflights
22/6030/192
2022 Approved
28 Grosvenor Road London N3 1EX
Single storey rear extension with a proposed depth of 6.00 metres from original rear wall…
22/5066/PNH
2022 Approved
10 Lansdowne Road London N3 1ES
Single storey rear extension with new patio area following demolition of the existing sin…
22/3218/HSE
2022
30 Grosvenor Road London N3 1EX
Single storey rear extension with a proposed depth of 6.00 metres from original rear wall…
22/4894/PNH
2022 Approved
26 Lansdowne Road London N3 1ES
Single storey rear extension with new patio area following removal of the existing conser…
22/1713/192
2021 Approved
12 Lansdowne Road London N3 1ES
Roof extension involving rear dormer window, juliette balcony and 3no front facing roofli…
21/6024/192
2021 Approved
26 Lansdowne Road London N3 1ES
Single storey rear extension with a proposed depth of 5.30 metres from original rear wall…
21/5680/PNH
2021 Approved
12 Lansdowne Road London N3 1ES
Single storey rear extension following demolition of existing extension. Replacement of r…
21/4913/HSE
2021 Refused
26 Lansdowne Road London N3 1ES
Single storey rear extension with a proposed depth of 5.00 metres from original rear wall…
21/4754/PNH
2021 Approved
28 Lansdowne Road London N3 1ES
Roof extension involving hip to gable, rear dormer window and 3no front facing rooflights
21/2825/192
2021 Approved
14 Finchley Way London N3 1AG
Alteration and extension to existing roof to include enlargement of existing rear dormer…
21/0821/192
2021 Approved
40 Lansdowne Road London N3 1ES
Roof extension involving partial hip to gable, rear dormer window and 2no front facing ro…
21/0172/192
2020 Approved
40 Lansdowne Road London N3 1ES
New front porch
20/5266/HSE
2020 Refused
40 Lansdowne Road London N3 1ES
Roof extension involving hip to gable, rear dormer window and 3no front facing rooflights
20/5248/192
2020 Approved
40 Lansdowne Road London N3 1ES
Single storey rear extension with a proposed depth of 6.00 metres from original rear wall…
20/5267/PNH
2020 Approved
21 Finchley Way London N3 1AG
Roof extension involving a hip to gable extension, rear dormer window extension and side…
20/0385/192
2019 Approved
29 Lansdowne Road London N3 1ET
Single storey rear extension
19/4059/HSE
2016 Approved
20 Finchley Way London N3 1AG
Single storey side extension following the demolition of the garage. Loft conversion invo…
16/1399/HSE
2016 Approved
34 Lansdowne Road London N3 1ES
Single storey rear extension. Rear dormer with Juliette balcony to facilitate loft conver…
16/1116/192
2016 Approved
32 Grosvenor Road London N3 1EX
Erection of new garage
16/1151/192
2016 Approved
22A Lansdowne Road London N3 1ES
Single storey rear extension following the demolition of the existing rear conservatory…
16/0130/FUL
2016 Withdrawn
34 Lansdowne Road London N3 1ES
Single storey rear extension
16/0649/192
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