3 Lancaster Avenue Barnet EN4 0EP Data via plota.co.uk

26/02287/HOU - Householder Refused
Extensions & alterations

Proposal

Conversion of garage into a habitable room involving replacement of existing garage and rear door and replacement of windows. Data via plota.co.uk

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View original council record ↗Last checked

Application progress

✓
Received
2 Jun 2026
✓
Validated
15 Jun 2026
✓
Consultation
22 Jun 2026
✗
Refused
10 Aug 2026
Appeal
Not lodged

Refused on 10 Aug 2026 · Delegated Decision · Last checked 11 Aug 2026

Documents 8

Decision & officer reports 1

PDF Decision Notice Decision Notice · 10 Aug 2026 View ↗

Statements & assessments 2

PDF Site notice Displayed Site Notice Statement · 15 Jul 2026 View ↗ PDF Heritage Statement Supporting Information · 22 Jun 2026 View ↗

Application forms 2

PDF Application Form - Without Personal Data Application Form - Without Personal Data · 2 Jun 2026 View ↗ PDF CIL FORM 1 Community Infrastructure Levy ? Completed Form · 2 Jun 2026 View ↗

Other documents 3

PDF Report Report · 10 Aug 2026 View ↗ PDF PRESS NOTICE 01/07/2026 Press Notice · 1 Jul 2026 View ↗ PDF COVERING LETTER Covering Letter · 2 Jun 2026 View ↗

All documents on the council site ↗

Site constraints 5

Hadley Wood conservation area
Demolition needs planning permission and permitted development is restricted.
The council must give weight to preserving or enhancing the area's character and appearance. Not every council has published its boundaries as open data.
Council document ↗
2 Article 4 directions
Hadley Wood · Borough wide. Named permitted development rights are withdrawn here.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: Enfield 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 Enfield built-up area; Public transport access: PTAL 1a (very poor), TfL 2023, for the 100 m square.
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 3

Last sold for £1,700,000 in August 2019. Semi-detached house, freehold.

23 August 2019£1,700,000
27 July 2012£1,320,000
13 September 1996£328,000

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

Building

Floor area259 m² (2,788 sq ft)
Energy ratingE (53 out of 100), could reach B
PropertySemi-detached house, 9 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 2019, 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

26 Aug 2026Refused

17 Lancaster Avenue Barnet EN4 0EP

Works to a tree in Hadley Wood Conservation area: T4 Pine - Remove (fell) to nea...

26/03611/TCA
30 Sept 2026Pending

12B Lancaster Avenue Barnet EN4 0EX

Redevelopment of site by erection of 2 storey dwelling with habitable basement a...

26/03636/FUL
27 Jul 2026Refused

96 Lancaster Avenue Barnet EN4 0EU

Single storey rear extension and front porch involving change to front elevation...

26/02969/HOU

Nearby new applications

19 Oct 2026Pending

14A Beech Hill Avenue Enfield EN4 0LN

Detached outbuilding at rear.

26/03900/HOU
8 Oct 2026Pending

8 Courtleigh Avenue Barnet EN4 0HS

Rear dormer with conversion of garage into kitchen involving changes to front el...

26/04081/HOU
1 Oct 2026Pending

56 Camlet Way Barnet EN4 0NS

Redevelopment of the site and erection of a 2-storey block comprising 3 x single...

26/03929/FUL
30 Sept 2026Pending

12B Lancaster Avenue Barnet EN4 0EX

Redevelopment of site by erection of 2 storey dwelling with habitable basement a...

26/03636/FUL
4 Sept 2026Pending

Longacres Wagon Road Barnet Hertfordshire EN4 0PN

Installation of 117 kWp Solar Array together with batteries storage, Solar Array...

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3 Sept 2026Pending

17 Waggon Road Barnet EN4 0PW

Erection of front boundary wall with railings and electric sliding gate to a max...

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Important details

Council
Enfield
Application type
Householder
Postcode
EN4 0EP
Received
2 Jun 2026
Validated
15 Jun 2026
Ward
Cockfosters
Case officer
Show
Target decision
10 Aug 2026
Decision
Refused
Decision date
10 Aug 2026
Decision level
Delegated Decision
Applicant
Show
Agent
Alan Cox Associates Ltd.

How this decision compares

Decided in 56 days from validation, 12 days slower than Enfield's median of 44 for extensions. Refused, as 18% of extensions here are.

90%decided within 8 weeks
82%approved
1,770decided in the last year

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

Public comments

No public comments yet.

8 neighbours consulted · Last counted 11 Aug 2026

Read the comments on the council site ↗

Consultation & key dates

Alt. reference
PP-14977271
Planning Portal ref
PP-14977271
Neighbours
23 Jun 2026
Consultation
22 Jun 2026
Comments by
5 Aug 2026
Site or press notice
15 Jul 2026
Statutory expiry
10 Aug 2026
Env. assessment
No

Historical activity at this location

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

This property

Previous applications at this address

2021 Approved
Single storey side extension, incorporating partial garage conversion with new rooflights…
21/02553/HOU
Within ~100m

Nearby activity

2025
12 Douglas Close Barnet EN4 0AQ
Works to a tree covered by TPO 412/2020: (T01) Eucalyptus - Root prune at a distance of a…
25/03964/TPO
2025 Refused
Land At Front Of 12 Douglas Close Barnet EN4 0AQ
Works to tree covered by LBE order no 412 2020: 1x eucalyptus (T01) root prune up to 2m f…
25/01645/TPO
2025 Refused
Land At Front Of 12 Douglas Close Barnet EN4 0AQ
Works to tree covered by LBE order no 412 2020: 1x eucalyptus (T01) root prune up to 2m f…
25/00373/TPO
2024 Approved
15 Lancaster Avenue Barnet EN4 0EP
Lowering of the internal floor level within the existing lower ground floor, new fenestra…
24/01617/HOU
2023 Decided
Douglas Close Barnet EN4
Works to 1x Eucalyptus (T1) protected by TPO 412 2020:A) Crown lift lowest branches over…
23/04149/TPO
2023 Approved
17 Lancaster Avenue Barnet EN4 0EP
Works to trees in the Hadley Wood Conservation Area:- 3x damson (G1): lop fell to ground…
23/03742/TCA
2023 Refused
Douglas Close Barnet EN4
Works to 1x Eucalyptus (T1) protected by TPO 412 2020 - crown reduction by up to 3m and l…
23/01821/TPO
2023 Approved
21 Lancaster Avenue Barnet EN4 0EP
Works to trees in the Hadley Wood Conservation Area: 1x sycamore (T1), 2x Lawson cypress…
23/01936/TCA
2022 Approved
21 Lancaster Avenue Barnet EN4 0EP
Two storey side and rear extension at ground and basement level, lowering of existing bas…
22/04303/HOU
2022 Refused
Douglas Close Barnet EN4 0AQ
Works to 1 x eucalyptus (T1) protected by TPO 412 2020 - 4m crown reduction to 12m height…
22/02292/TPO
2022 Decided
33 Lancaster Avenue Barnet EN4 0EP
Works to trees covered by LBE ORDER NO 87(1979):A) 2x sycamore (T2, T4) and 1x lime (T3)…
22/01528/TPO
2022 Approved
8 Douglas Close Barnet EN4 0AQ
Works to various trees within Hadley Wood conservation area - 1 x lime (T1) - crown lift…
22/00594/TCA
2021 Refused
21 Lancaster Avenue Barnet EN4 0EP
Part single part 2-storey side/rear extension, extension to basement together with extens…
21/02260/HOU
2021 Approved
17 Lancaster Avenue Barnet EN4 0EP
Single storey side / rear extension, together with extension to lower ground floor level…
21/01176/HOU
2021 Approved
19 Lancaster Avenue Barnet EN4 0EP
Work to 1 Sycamore tree in the Hadley Wood Conservation Area- Fell.
21/00855/TCA
2020 Approved
Communal Land Opposite 6 Douglas Close Barnet EN4 0AQ
Work to 1 Eucalyptus in Hadley Wood Conservation area- Fell.
20/03014/TCA
2020 Approved
19 Lancaster Avenue Barnet EN4 0EP
Work to 2 x sycamore trees in Hadley Wood Conservation Area :- Crown reduce by up to 6m.
20/02309/TCA
2020 Approved
2A Lancaster Avenue Barnet EN4 0EX
Single storey rear extension.
20/01656/HOU
2020 Approved
27 Lancaster Avenue Barnet EN4 0EP
Rear dormer with front and side rooflights, sliding doors and balustrade.
20/00576/HOU
2020 Decided
33 Lancaster Avenue Barnet EN4 0EP
Work to trees covered by LBE Order No 87: A) 1 x Beech (T5) - Fell; B) 4 x Lime (T1-T4)…
20/01157/TPO
2016 Approved
17 Lancaster Avenue Barnet EN4 0EP
Work to trees in Hadley Wood Conservation Area:- 1 x Pine- Remove 5 overhanging branches…
16/04861/TCA
2016 Refused
15 Lancaster Avenue Barnet EN4 0EP
Conversion of garage into habitable room with new roof.
16/00006/HOU
2016 Refused
25 Lancaster Avenue Barnet EN4 0EP
Minor amendments to 14/02634/FUL to include reconfiguration of basement internal floor la…
16/01376/FUL
2016 Refused
21 And Rear Of 23 And 25 Lancaster Avenue Barnet EN4 0EP
Demolition of detached garage at side, construction of access road and erection of 1 x 4…
16/01452/FUL
2016 Approved
15 Lancaster Avenue Barnet EN4 0EP
Work to trees in Hadley Wood Conservation Area:- 1 x Pear- Pollard at 8ft, 1 x Damson- Re…
16/00931/TCA
Enfield
Planning Authority Score
6.9/10
Good
#65 of 296 councils
Relevant to this application:
Householder decisions

Enfield is one of the fastest councils in England for householder decisions, ranking #15 out of 296. Only 5% of applications have the time limit extended, well below the 41% national average - the council usually decides on time. Enfield is also one of the strictest councils - it refuses more householder applications than almost any other, with only 83% approved vs 90% nationally.

Among the fastest councils in England
for householder decisions
These figures are council-wide context, not a prediction for this application. View full council performance
Enfield decision statistics
Based on MHCLG data, the year to March 2026
78%
Overall approval rate
Below avg (87%) #271 of 296
83%
Householder approved
Below avg (90%) #260 of 296
90%
Decided in 8 weeks
Above avg (63%) #15 of 296
5%
Extended time limit
Below avg (41%) #1 of 296
60%
Minor dwellings approved
265 decided (1-9 homes)
63%
Major dwellings approved
8 decided (10+ homes)
72%
Change of use approved
322 decided
1,939
Total decisions
433 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.