9 St Johns Avenue London N11 3BX Data via plota.co.uk

26/3067/192 - Proposed Lawful Development Certificate Approved
Extensions & alterations

Proposal

Roof extension with 1no. rear dormer window over main roof and 1no. rear dormer over outrigger roof, 3no. front facing rooflights and new side gable window Data via plota.co.uk

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View original council record ↗Last checked

Application progress

✓
Received
20 Aug 2026
✓
Approved
27 Aug 2026

Approved on 27 Aug 2026 · Delegated Decision · Last checked 27 Aug 2026

Documents 5

Decision & officer reports 1

PDF DN: LAWFUL 192 Decision Notice · 27 Aug 2026 View ↗

Plans & drawings 3

PDF THE LOCATION PLAN Site Location Plan · 20 Aug 2026 View ↗ PDF THE LOCATION PLAN Site Location Plan · 20 Aug 2026 View ↗ PDF EXISTING/PROPOSED Drawing · 20 Aug 2026 View ↗

Application forms 1

PDF APPLICATION FORM - WITHOUT PERSONAL DATA Application Form · 20 Aug 2026 View ↗

All documents on the council site ↗

Site constraints 6

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 Named permitted development rights are withdrawn here.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 ↗
Local nature reserve 219 m away: Coppetts Wood and Glebelands
Work nearby can need a habitats assessment.
Harm to a protected site is only accepted where there is no alternative and an overriding public interest.
1 listed building within 150 m
Nearest: Church of St John the Evangelist, Grade II*, 43 m away
The site itself is not listed. Listed building consent is needed for work that affects the special interest of a listed building, inside or out, on top of planning permission. Setting can be a consideration for buildings nearby; there is no fixed radius.
Historic England ↗
Also on the record
Inside the Barnet built-up area; Public transport access: PTAL 3 (moderate), TfL 2023, for the 100 m square.
Not affected
Outside flood zones 2 and 3 · Not green belt · No scheduled monument 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 4

Last sold for £830,000 in February 2024. Terraced house, freehold.

1 February 2024£830,000
16 March 2018£740,000
2 March 2007£449,500
24 July 1998£168,000

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

Building

Floor area132 m² (1,421 sq ft)
Energy ratingD (58 out of 100), could reach B
PropertyMid-terrace house, 7 habitable rooms
Built1900 to 1929
HeatingBoiler and radiators, mains gas
WallsSolid brick, as built, no insulation (assumed)

From the energy performance certificate lodged in February 2017, the latest held for this property. The building may have changed since. View the certificate

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Important details

Council
Barnet
Application type
Proposed Lawful Development Certificate
Postcode
N11 3BX
Received
20 Aug 2026
Validated
20 Aug 2026
Ward
Friern Barnet
Case officer
Show
Target decision
15 Oct 2026
Decision
Lawful
Decision date
27 Aug 2026
Decision level
Delegated Decision
Applicant
Show
Agent
Sunlight Lofts Conversions Limited

How this decision compares

Decided in 7 days from validation, 45 days faster than Barnet's median of 52 for extensions. Approved, as 75% of extensions here are.

87%decided within 8 weeks
75%approved
1,888decided 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 27 Aug 2026

Read the comments on the council site ↗

Consultation & key dates

Alt. reference
PP-15171768
Planning Portal ref
PP-15171768
Statutory expiry
15 Oct 2026

Historical activity at this location

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

Within ~100m

Nearby activity

2025 Approved
19 Hollyfield Avenue London N11 3BY
Single storey rear extension with a proposed depth of 8.00 metres, maximum height of 3.00…
25/2500/PNH
2025
19 Hollyfield Avenue London N11 3BY
Erection of a rear outbuilding following demolition of the existing shed
25/3043/192
2024 Refused
Kemble House 272 Colney Hatch Lane London N11 3DD
Increase of the boundary wall height by 1.2m
24/2240/FUL
2023 Approved
17 St Johns Avenue London N11 3BX
Single storey side/rear extension with 4no. rooflights
23/5180/HSE
2022 Approved
First Floor Flat 27 St Johns Avenue London N11 3BX
Roof extension involving side and rear dormer window
22/0335/FUL
2023 Approved
29 Hollyfield Avenue London N11 3BY
Roof extension involving rear dormer and outrigger dormer and 3no. front facing rooflights
23/0557/192
2022 Approved
23 St Johns Avenue London N11 3BX
Single storey side/rear extension
22/3105/HSE
2022 Approved
23 St Johns Avenue London N11 3BX
Roof extension involving L-shaped dormer to the main roof and outrigger roof, 3no front f…
22/3104/192
2022 Approved
14 Hillside Avenue London N11 3DE
Single storey side extension to replace existing garage and expansion of rear terrace area
22/2307/HSE
2021 Withdrawn
18 St Johns Avenue London N11 3BX
Single storey rear extension
21/2832/HSE
2021 Approved
18 St Johns Avenue London N11 3BX
A single storey rear extension measuring 5.17 metres in depth from the original rear wall…
21/2727/PNH
2021 Refused
25 Hollyfield Avenue London N11 3BY
Roof extension including rear dormer window and 2no. rooflights to front roofslope
21/2022/192
2021 Withdrawn
25 Hollyfield Avenue London N11 3BY
Roof extension including rear dormer window and 2no. rooflights to front roofslope
21/1279/192
2020 Approved
First Floor Flat 27 St Johns Avenue London N11 3BX
Roof extension involving rear dormer window
20/5430/FUL
2020 Approved
7 St Johns Avenue London N11 3BX
Single storey side/rear infill extension
20/5358/HSE
2020
Hydon Court Friern Barnet Road London N11 3EQ
1 x Horse Chestnut (applicant's ref. T1) - Reduce branches overhanging neighbouring prope…
TPP/0784/20
2020 Refused
First Floor Flat 27 St Johns Avenue London N11 3BX
Roof extension involving hip to gable, rear dormer window and 2no front facing rooflights
20/2862/FUL
2020 Approved
33 Hollyfield Avenue London N11 3BY
Childrens Home not more than 3 Children
20/2884/192
2020 Approved
2 St Johns Avenue London N11 3BX
Roof extension including hip to gable, 2no rear dormers with windows and 3no front facing…
20/1327/192
2020 Approved
29 Hollyfield Avenue London N11 3BY
Single storey side/rear infill extension following demolition of the bay window
20/0867/HSE
2016 Approved
St John The Evangelist Church Friern Barnet Road London N11
1 x Lime - Crown lift to 3 metres above ground level; Thin by 30%. T1 of Tree Preservatio…
TPP/0713/16
2016 Approved
1 Hillside Avenue London N11 3DE
Single storey rear extension
16/7243/192
2016 Approved
1 Hillside Avenue London N11 3DE
Single storey side and rear extension with a proposed depth of 4.85 metres from original…
16/6349/PNH
2016 Refused
1 Hillside Avenue London N11 3DE
Single storey rear extension with a proposed depth of 4 metres from original rear wall, e…
16/6091/PNH
2016 Withdrawn
1 Hillside Avenue London N11 3DE
Single storey rear extension
16/5217/192
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

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.