51 Mercers Road, London, N19 4PP Data via plota.co.uk

P2026/2086/FUL - Full Planning (Householder) VALIDATED
Extensions & alterationsNew homes

Proposal

Part excavation of existing basement to provide habitable space, erection of single storey rear extension, alterations to the rear façade, installation of front and rear skylights and associated works [RECONSULTATION - front skylight added] Data via plota.co.uk

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View original council record ↗Last checked

Application progress

✓
Received
4 Aug 2026
✓
Validated
17 Aug 2026
✓
Consultation
15 Oct 2026
Decision
Target date was 11 Oct 2026

Under consideration

No decision has been issued yet. Plota predicted a decision soon after comments close on 7 Nov 2026; it is now day 72.

Comments are open until 7 Nov 2026

Comment on this application ↗

Documents

View the documents on the council's website ↗

Site constraints 9

Article 4 directionCritical Drainage Group3_002Within 50m of Mercers Road/Tavistock TerraceMercers Road/Tavistock TerraceB
Mercers Road/Tavistock Terrace 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 ↗
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Some permitted development rights are withdrawn.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 ↗
Critical Drainage Group3_002Council record
Recorded by the council for this site.
Council site ↗
Within 50m of Mercers Road/Tavistock TerraceCouncil record
Recorded by the council for this site.
Council site ↗
Mercers Road/Tavistock TerraceCouncil 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 3 (moderate), 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.

Building

Floor area185 m² (1,991 sq ft)
Energy ratingD (62 out of 100), could reach C
PropertySemi-detached house, 8 habitable rooms
Built1900 to 1929
HeatingBoiler and radiators, mains gas
WallsSolid brick, as built, no insulation (assumed)

From the energy performance certificate lodged in November 2025, 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

8 Sept 2026Approved

47 Mercers Road, London, N19 4PP

Retention of double glazed windows (installed to replace single glazed windows).

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8 Sept 2026Approved

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Replacement of existing ground floor patio doors. Creation of terrace above rear

P2026/2324/FUL
11 Jun 2026Approved

39, Mercers Road, London, N19 4PW

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P2026/1473/TRE

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Important details

Council
Islington
Application type
Full Planning (Householder)
Postcode
N19 4PP
Received
4 Aug 2026
Validated
17 Aug 2026
Ward
Tufnell Park
Case officer
Show
Target decision
11 Oct 2026
Decision level
Delegated
Applicant
Show
Agent
Show

Decision outlook

Day 72, past the statutory target. 84% of extensions in Islington are decided within thirteen weeks, which runs to 16 Nov 2026; extensions of time are common, and the council need not decide on the day. Last seen undecided on 27 Oct 2026.

Day 7211 days to the predicted decision (day 83)
60%decided within 8 weeks
94%approved
688decided 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-15133578
Comments by
7 Nov 2026
Site or press notice
15 Oct 2026
Statutory expiry
28 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 Withdrawn
26 Mercers Road, London, N19 4PJ
Conversion of existing dwelling house into 2x self-contained flats with associated subdiv…
P2025/2524/FUL
2025 Approved
30, Mercers Road, London, N19 4PJ
Rear Garden: T1: Laurel: Approximately 5.00m: Reduce by up to 1.20m. General maintenance.
P2025/3240/TRE
2025 Approved
30, Mercers Road, London, N19 4PJ
G1: T1 & T2: Mature Bays: Right Hand Boundary: Approximately 9.00m: Reduce crown height b…
P2025/3196/TRE
2025
30, Mercers Road, London, N19 4PJ
Rear Garden: G1: T1 & T2: Mature Bays: Right Hand Boundary: Approximately 9.00m: Reduce c…
P2025/3169/TRE
2025 Approved
Flat A, 44 Mercers Road, London, N19 4PR
Construction of a front lightwell, with metal grill over (with hatch and metal ladder for…
P2025/0587/FUL
2024
32 Mercers Road, London, N19 4PJ
Rear Garden: T1: Mature Ash: Approximately 16.00m: Reduce crown by 2-25m-3.00m all round…
P2024/1485/TRE
2023 Approved
48 Mercers Road, London, N19 4PR
Erection of single-storey wrap around extension, excavation of new front lightwell, enlar…
P2023/1557/FUL
2023 Approved
34 Mercers Road, London, N19 4PJ
Rear garden (T1) Leyland Cypress - reduce crown by 3-4m (T2-T3) Birch x2 - reduce crowns…
P2023/0891/TRE
2022 Approved
30 Mercers Road, London, N19 4PJ
Rear Garden (T1) Ash - Reduce crown by approximately 1.80m-2.20m all round. Remove 1 x lo…
P2022/3265/TRE
2021 Approved
44-46 Mercers Road, London, N19 4PR
Construction of a single storey ground floor side/rear extension at No. 46 Mercers Road…
P2021/3450/FUL
2022 Approved
28 Mercers Road, London, N19 4PJ
Rear Garden: (T1) Cherry - Fell to ground level. Grind stump to approximately 300mm below…
P2022/1888/TRE
2022 Approved
30 Mercers Road, London, N19 4PJ
Rear Garden (S1) Laurel - Reduce height by up to 1.00m.
P2022/1985/TRE
2021 Approved
56 Tufnell Park Road, London, N7 0DT
Replacement of existing front entrance door with new glazed timber panelled door.
P2021/3763/FUL
2021 Approved
50 Tufnell Park Road, London, N7 0DT
Replacement of existing front entrance door with a new glazed timber panelled door.
P2021/3764/FUL
2022 Approved
60 Mercers Road, London, N19 4PR
Replacement of existing single glazed timber windows with double glazed timber units to t…
P2022/1048/FUL
2021 Approved
72-74 Tufnell Park Road, London, N7 0DT
Replacement of existing single glazed timber windows and doors with double glazed timber…
P2021/3706/FUL
2021 Approved
32 Mercers Road, London, N19 4PJ
Front garden T1 Holly - Reduce height by approximately 1.50m. Reduce lateral and sub late…
P2021/3171/TRE
2021 Approved
44 Mercers Road, London, N19 4PR
Retrospective application for the amalgamation of studios A and B into a single 2-bedroom…
P2021/2511/FUL
2021 Approved
24 Mercers Road, London, N19 4PJ
Rear garden Sycamore x2 - Crown reduce height and lateral growth by up to 2m
P2021/1143/TRE
2020 Approved
68 Mercers Road, London, N19 4PR
Erection of ground floor side infill extension, creation of second floor roof terrace, lo…
P2020/3503/FUL
2016 Approved
62 Mercers Road Islington LONDON N19 4PR
Erection of single storey rear and side infill extension plus alterations to the rear fir…
P2016/3674/FUL
2016 Approved
32 Mercers Road, London, N19 4PJ
Fell 1 x Cherry in rear garden.
P2016/3742/TRE
2016 Withdrawn
1 Yerbury Road, London, N19 4RN
Single storey rear extension at ground floor level. Front light well to basement and lowe…
P2016/2603/FUL
2016
28 Mercers Road, London, N19 4PJ
Rear garden: 1 x Bay tree (T1) - Crown reduce tree by 30% (up to 2.5m on all aspects to s…
P2016/1457/TRE
2016 Approved
Flat D, 68 Tufnell Park Road London N7 0DT
Conversion of loft space including side and rear dormer windows and a front rooflight.
P2016/0186/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

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.