54 Devonshire Road London NW7 1LL Data via plota.co.uk

25/3700/192 - Proposed Lawful Development Certificate Approved

Proposal

Roof extension involving rear dormer with juliette balcony and 3no. front facing rooflights. External wall insulation and render Data via plota.co.uk

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View original council record ↗Last checked

Application progress

✓
Received
8 Sept 2025
✓
Validated
9 Sept 2025
✓
Approved
6 Oct 2025

Approved on 6 Oct 2025 · Delegated Decision · Last checked 30 Oct 2026

Documents 13

Decision & officer reports 2

PDF DELEGATED REPORT Report · 16 Oct 2025 View ↗ PDF DN: LAWFUL 192 Decision Notice · 6 Oct 2025 View ↗

Plans & drawings 8

PDF GROUND AND FIRST FLOOR PLANS INCL INSULATION Drawing · 29 Sept 2025 View ↗ PDF PROPOSED ELEVATIONS Drawing · 9 Sept 2025 View ↗ PDF PROPOSED ROOF Drawing · 9 Sept 2025 View ↗ PDF THE LOCATION PLAN Site Location Plan · 8 Sept 2025 View ↗ PDF EXISTING SITE PLAN Drawing · 8 Sept 2025 View ↗ PDF PROPOSED SITE PLAN Drawing · 8 Sept 2025 View ↗ PDF EXISTING FLOOR PLANS Drawing · 8 Sept 2025 View ↗ PDF EXISTING ELEVATIONS Drawing · 8 Sept 2025 View ↗

Application forms 1

PDF APPLICATION FORM - WITHOUT PERSONAL DATA Application Form · 8 Sept 2025 View ↗

Other documents 2

PDF VERIFICATION OF APPLICATION Application Document · 8 Sept 2025 View ↗ PDF VOLUME Application Document · 8 Sept 2025 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 Named permitted development rights are withdrawn here.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; Green belt 94 m away: London.
Not affected
Outside flood zones 2 and 3 · No listed building at the site · No scheduled monument at the site

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.

Sales history 2

Last sold for £562,500 in July 2025. Semi-detached house, freehold.

31 July 2025£562,500
1 July 1996£78,500

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

Building

Floor area75 m² (807 sq ft)
Energy ratingD (64 out of 100), could reach B
PropertyMid-terrace house, 5 habitable rooms
Built1930 to 1949
HeatingBoiler and radiators, mains gas
WallsSolid brick, as built, no insulation (assumed)

From the energy performance certificate lodged in January 2018, 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

29 Oct 2026Pending

74 Devonshire Road London NW7 1DP

Roof extension involving hip to gable, rear dormer window, 2no. front facing roo...

26/3929/192
27 Oct 2026Pending

9 Devonshire Road London NW7 1NE

Roof extension involving hip to gable, rear dormer window, 3no. rooflights and n...

26/3873/192
15 Sept 2026Pending

154 Devonshire Road London NW7 1DJ

Single storey rear extension with 6no. rooflights, following the demolition of t...

26/3371/HSE
20 Jul 2026Approved

156 Devonshire Road London NW7 1DJ

Part single, part two storey side and rear wraparound extensions. Single storey ...

26/2680/HSE

Nearby new applications

29 Oct 2026Pending

74 Devonshire Road London NW7 1DP

Roof extension involving hip to gable, rear dormer window, 2no. front facing roo...

26/3929/192
28 Oct 2026Pending

3 Devonshire Crescent London NW7 1DN

Roof extension involving hip to gable, rear dormer window and 4no. front facing ...

26/3834/192
27 Oct 2026Pending

9 Devonshire Road London NW7 1NE

Roof extension involving hip to gable, rear dormer window, 3no. rooflights and n...

26/3873/192
26 Oct 2026Pending

9 Devonshire Road London NW7 1NE

Single storey rear extension with a proposed depth of 6 metres, maximum height o...

26/3874/PNH
22 Oct 2026Pending

3 Devonshire Crescent London NW7 1DN

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

26/3835/PNH
7 Oct 2026Pending

3 Abercorn Road London NW7 1JD

Conversion of existing dwellinghouse into 2no. self-contained flats with associa...

26/3623/FUL

Important details

Council
Barnet
Application type
Proposed Lawful Development Certificate
Postcode
NW7 1LL
Received
8 Sept 2025
Validated
9 Sept 2025
Ward
Mill Hill
Case officer
Show
Target decision
4 Nov 2025
Decision
Lawful
Decision date
6 Oct 2025
Decision level
Delegated Decision
Applicant
Show
Agent
HK Home Architects And Consultants Ltd

How this decision compares

Decided in 27 days from validation, about the council's usual 28 days. Approved, as 80% of lawful development certificates here are.

95%decided within 8 weeks
80%approved
788decided in the last year

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 30 Oct 2026

Read the comments on the council site ↗

Consultation & key dates

Alt. reference
PP-14311039
Planning Portal ref
PP-14311039
Statutory expiry
4 Nov 2025

Historical activity at this location

27 previous applications on record - archival context, not part of the live application.

This property

Previous applications at this address

2025 Approved
Single storey rear extension with a proposed depth of 4.00m, maximum height of 3.15m and…
25/4212/PNH
2025
Single storey rear extension with a proposed depth of 4.00 metres, maximum height of 3.15…
25/3764/PNH
Within ~100m

Nearby activity

2025
24 Vineyard Avenue London NW7 1HR
Roof extension involving side and dormer window and 3no. front facing rooflights
25/1990/FUL
2025 Withdrawn
24 Vineyard Avenue London NW7 1HR
Roof extension involving hip to gable, rear dormer window and 4no. front facing rooflight…
25/1166/FUL
2024 Approved
51 Devonshire Road London NW7 1NE
New front vehicular access and hardstanding to provide off-street parking
24/0655/192
2023 Approved
28 Vineyard Avenue London NW7 1HR
Single storey rear extension with new patio area and access steps
23/4619/HSE
2023 Approved
29 Lee Road London NW7 1LJ
Single storey rear extension following demolition of the garage and shed
23/4071/HSE
2023 Refused
28 Vineyard Avenue London NW7 1HR
Single storey rear extension with a proposed depth of 6.00 metres from original rear wall…
23/2993/PNH
2023 Approved
28 Vineyard Avenue London NW7 1HR
Roof extension including hip to gable, rear dormer window with juliette balcony and 1no…
23/2994/192
2023 Approved
10 Vineyard Avenue London NW7 1HR
Conversion of the existing garage into habitable room, insertion of window and door to re…
23/0857/192
2022 Approved
1 Oakhampton Road London NW7 1NG
Roof extension involving hip to gable and rear dormer
22/3625/192
2022 Approved
16 Lee Road London NW7 1LJ
Single storey rear extension with new decking area. New front porch
22/2910/HSE
2022 Approved
18 Lee Road London NW7 1LJ
Single storey rear extension. (amended plans/site location plan)
22/2342/HSE
2022 Approved
44 Devonshire Road London NW7 1LL
Single storey rear extension. New front porch. Erection of a rear outbuilding
22/2109/192
2022 Approved
21 Lee Road London NW7 1LJ
Single storey side/rear extension
22/0452/HSE
2022 Refused
18 Lee Road London NW7 1LJ
single storey rear extension measuring a depth of 4.00 metres beyond the original rear wa…
22/0506/PNH
2022 Approved
21 Lee Road London NW7 1LJ
Roof extension involving hip to gable, rear dormer window, 2no front facing rooflights. N…
22/0451/192
2021 Approved
11 Devonshire Road London NW7 1NE
Single storey rear extension with a proposed depth of 4.00 metres from original rear wall…
21/6519/PNH
2021 Approved
29 Vineyard Avenue London NW7 1HR
Roof extension involving hip to gable, rear dormer window with Juliette balcony, 2no fron…
21/5010/192
2021
43 Devonshire Road London NW7 1NE
Single storey rear extension, new front porch
21/4648/192
2021 Approved
12 Vineyard Avenue London NW7 1HR
Erection of single storey side rear extension that will connect to the existing garage. C…
21/1315/HSE
2021 Approved
27 Vineyard Avenue London NW7 1HR
Roof extension including hip to gable, rear dormer window and 1no front facing rooflight
21/1747/192
2016 Approved
21 Vineyard Avenue London NW7 1HR
Single storey rear extension. New timber decking
16/1544/HSE
2016 Approved
31 Lee Road London NW7 1LJ
Demolition of existing rear extension, single storey side extension and front porch and e…
16/1391/HSE
2016 Approved
30 Devonshire Road London NW7 1LL
Single storey rear extension with a proposed depth of 4.5 metres from original rear wall…
16/1127/PNH
2016 Approved
30 Devonshire Road London NW7 1LL
Extension to roof involving 1 no dormer window to the side elevation
16/1125/192
2016 Approved
20 Devonshire Road London NW7 1LL
Proposed single storey rear and side extension following the demolition of the existing g…
16/0176/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.