12 Devonia Road, London, N1 8JH Data via plota.co.uk

P2026/2866/FUL - Full Planning Application VALIDATED
Extensions & alterations

Proposal

Erection of mansard extension. Replacement of the existing windows. Re conversion to a single family house. Installation of x1 ASHP. Data via plota.co.uk

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View original council record ↗Last checked

Application progress

✓
Received
30 Oct 2026
✓
Validated
9 Nov 2026
✓
Consultation
12 Nov 2026
Decision
Expected by 31 Dec 2026

Under consideration

No decision has been issued yet. Plota predicts a decision between 28 Dec 2026 and 4 Jan 2027, from Islington's recent extensions.

Comments are open until 5 Dec 2026

Comment on this application ↗

Documents

View the documents on the council's website ↗

Site constraints 9

Article 4 directionDuncan Terrace/Colebrooke RowB
Duncan Terrace/Colebrooke Row 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 ↗
Air quality management area: Islington 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 ↗
20 listed buildings within 150 m of the postcode pin
Nearest: Roman Catholic Church of Our Lady of Czestochowa and St Casimir, Grade II, about 39 m from the postcode pin · 20 Grade II
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.
Show all 20 with distances
Historic England ↗
Article 4 directionCouncil record
Some permitted development rights are withdrawn. The direction is on the council's register but not published as open data.
Council site ↗
Duncan Terrace/Colebrooke RowCouncil record
Recorded by the council for this site.
Council site ↗
BCouncil record
Recorded by the council for this site.
Council site ↗
Also on the record
Inside the Islington built-up area; Public transport access: PTAL 5 (very good), TfL 2023, for the 100 m square; National infrastructure project about 1986 m away: London Strategic Heat Main Project, at pre-application.
Not affected
Outside flood zones 2 and 3 · Not green belt · No scheduled monument at the site

Checked on 10 November 2026. The pin for this application is the centre of its postcode rather than the building, so distances to nearby designations are measured from the postcode and can be out by the width of the postcode area. Historic England, the Environment Agency, Natural England, the Planning Inspectorate, 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.

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Other new applications on this street

26 Oct 2026Pending

35A Devonia Road, London, N1 8JQ

Amalgamation of the basement and ground floor flats into a single dwelling with ...

P2026/2734/FUL
20 Oct 2026Pending

31, Devonia Road, London, N1 8JQ

Approval of details pursuant to the discharge of Condition 6 (Construction Manag...

P2026/2772/AOD
2 Sept 2026Approved

47 Devonia Road, London, N1 8JQ

Replacement of all existing single-glazed timber windows with double-glazed timb

P2026/2078/FUL
6 Jul 2026Pending

29 Devonia Road, London, N1 8JQ

Certificate of Lawfulness of Development (Proposed) for replacement windows.

P2026/1416/COL

Nearby new applications

10 Nov 2026Pending

8, Raleigh Street, London, N1 8NN

Replace like for like 4 windows to front elevation and rear elevation.

P2026/2927/FUL
9 Nov 2026Pending

20, Duncan Terrace, London, N1 8BZ

Installation of an external air-conditioning unit to the rear outrigger elevatio...

P2026/2453/LBC
9 Nov 2026Pending

45 Arlington Square, London, N1 7DT

T1: Robinia (Robinia pseudoacacia) - Reduce the overall crown height and latera

P2026/2907/TRE
4 Nov 2026Pending

38, St Paul Street, London, N1 7AB

My client would like to reduce a Sycamore (T1) by removing 4m branch length. The...

P2026/2894/TRE
2 Nov 2026Pending

24 Sudeley Street, London, N1 8HP

Proposed construction of rear outbuilding in garden following demolition of exis...

P2026/2817/FUL
2 Nov 2026Pending

24 Sudeley Street, London, N1 8HP

Proposed construction of outbuilding in garden following demolition of existing ...

P2026/2824/LBC

Important details

Council
Islington
Application type
Full Planning Application
Postcode
N1 8JH
Received
30 Oct 2026
Validated
9 Nov 2026
Ward
St Peter's & Canalside
Case officer
Show
Target decision
31 Dec 2026
Applicant
Show
Agent
Show

Decision outlook

Day 2 of the 56-day target. Islington usually decides extensions by day 52.

Day 254 days to the 56-day target
60%decided within 8 weeks
94%approved
816decided in the last year

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

Consultation & key dates

Alt. reference
PP-15336733
Comments by
5 Dec 2026
Site or press notice
12 Nov 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
47 Danbury Street, Flat A, London, N1 8LE
Proposed lower & ground floor rear extensions, installation of gate within existing raili…
P2025/1996/FUL
2025
31 Devonia Road, London, N1 8JQ
Erection of a single storey rear wraparound extension and formation of a rear roof balcon…
P2025/3570/FUL
2025 Approved
51 Devonia Road, London, N1 8JQ
Replace existing windows with new double glazed windows to front and rear elevations.
P2025/3078/FUL
2025 Approved
2 Willow Walk, London, N1 8BH
Replacement of existing roof lights. Installation of new roof light to main roof. Install…
P2025/2471/FUL
2025 Approved
36, Colebrooke Row, London, N1 8AF
15-20m tall lime in back garden. Propose routine maintenance: reduce back to previous poi…
P2025/2829/TRE
2025 Refused
Flat A, 47 Danbury Street, London, N1 8LE
Erection of a double storey rear extension and installation of new staircase from lower g…
P2025/1169/FUL
2025 Approved
Flat C, 47 Devonia Road, London, N1 8JQ
Proposed front dormer and proposed rear dormer to roof level with two rooflights and asso…
P2025/0903/FUL
2025
24 Devonia Road, London
T1 - Sycamore - Remove branches that grow towards and overhang the garden of 22 Devonia R…
P2025/1773/TRE
2025 Approved
Flat A, 30 Devonia Road, London, N1 8JH
Excavation to an existing front vault to form bathroom.
P2025/0298/FUL
2025 Refused
25 Devonia Road, London, N1 8JQ
Erection of a roof dormer to rear roof slope and rooflights to front roof slope with incr…
P2025/0236/FUL
2024 Approved
Upper Maisonette, 35 Gerrard Road, London, N1 8BA
Listed Building Consent in connection with the external alterations including replacing a…
P2024/2382/LBC
2024 Approved
Upper Maisonette, 35 Gerrard Road, London, N1 8BA
External alterations including replacing a non-original casement window to the rear outri…
P2024/2408/FUL
2024 Approved
15, Gerrard Road, London, N1 8AY
Replacement glaszing to sash windows, Replacement of non-original sashes to match origina…
P2024/3564/LBC
2025
36 Colebrooke Row, London, N1 8AF
T1 Lime situated in the centre of the garden/courtyard. Cut back to previous cuts approxi…
P2025/0332/TRE
2024 Approved
21 Gerrard Road, London, N1 8AY
Installation of one external gas riser to the side elevation of the property, installatio…
P2024/3317/FUL
2024 Approved
21 Gerrard Road, London, N1 8AY
Installation of one external gas riser to the side elevation of the property, installatio…
P2024/3318/LBC
2024 Refused
25 Devonia Road, London, N1 8JQ
Erection of a mansard roof extension with dormer windows to front and rear.
P2024/1450/FUL
2024 Approved
25 Devonia Road, London, N1 8JQ
Remodel of the existing lower ground floor infill, remodel of the existing outrigger with…
P2024/2277/FUL
2024 Approved
Flat A, 42 Gerrard Road, London, N1 8AX
Alterations to the existing staircase to the front lightwell, with associated new stone p…
P2024/1568/FUL
2024 Approved
Flat A, 42 Gerrard Road, London, N1 8AX
Alterations to the existing staircase to the front lightwell, with associated new stone p…
P2024/1569/LBC
2018 Approved
31 A/B Grantbridge Street, London, N1 8JL
Replace existing timber single glazed sliding sash and casement windows to front and rear…
P2018/1953/FUL
2018 Approved
41 Colebrooke Row London N1 8AF
Replacement of existing rear extension at lower ground with single storey rear extension…
P2018/1325/LBC
2018 Approved
41 Colebrooke Row London N1 8AF
Replacement of existing rear extension at lower ground with single storey rear extension…
P2018/1214/FUL
2018 Approved
Flat A 41 Devonia Road Islington LONDON N1 8JQ
Partial infill of light well with steps access to lower ground floor. Erection of rear gl…
P2018/0347/FUL
2018 Approved
Flat B, 30 Devonia Road London N1 8JH
Erection of a mansard style roof extension.
P2018/0948/FUL
Islington
Planning Authority Score
2.9/10
Poor
#237 of 296 councils
Relevant to this application:
Householder decisions

Islington is slower than most councils at deciding householder applications, ranking #260 out of 296. 53% of applications have the time limit extended, above the 41% national average. Householder applications are slightly more likely to be approved here (93%) than the national average (90%).

Slower than most councils
for householder decisions
These figures are council-wide context, not a prediction for this application. View full council performance
Islington decision statistics
Based on MHCLG data, the year to March 2026
89%
Overall approval rate
Above avg (87%) #132 of 296
93%
Householder approved
Above avg (90%) #130 of 296
43%
Decided in 8 weeks
Below avg (63%) #260 of 296
53%
Extended time limit
Above avg (41%) #241 of 296
89%
Minor dwellings approved
499 decided (1-9 homes)
100%
Major dwellings approved
1 decided (10+ homes)
89%
Change of use approved
19 decided
1,488
Total decisions
167 refused in the year to March 2026
Source: MHCLG planning statistics · See full council rankings