86 Southwood Lane Hornsey London N6 5SY Data via plota.co.uk

HGY/2025/2929 - Householder planning permission Approved

Proposal

Two storey side extension; rear extension; alteration to boundary retaining wall; ASHP; solar panels; alterations to existing building facade and roof; alterations to windows and doors; and associated changes. Data via plota.co.uk

View original council record ↗Last checked

Application progress

✓
Received
around 27 Oct 2025
✓
Approved
27 Jan 2026

Approved on 27 Jan 2026 · Delegated Decision · Last checked 10 Oct 2026

Documents 50

Consultation & comments 2

Other documents 32

PDF SWL-PLA-04 (P7) PDF · 20 Jan 2026 View ↗ PDF SWL-PLA-08 (P4) PDF · 20 Jan 2026 View ↗ PDF SWL-REG-01 (Rev B) PDF · 20 Jan 2026 View ↗ PDF SWL-SIT-01 (P2) PDF · 20 Jan 2026 View ↗ PDF SWL-ELE-09 (P4) PDF · 20 Jan 2026 View ↗ PDF SWL-ELE-10 (P1) PDF · 20 Jan 2026 View ↗ PDF SWL-PLA-06 (P4) PDF · 20 Jan 2026 View ↗ PDF SWL-SEC-11 (P7) PDF · 20 Jan 2026 View ↗ PDF SWL-PLA-03 (P4) PDF · 20 Jan 2026 View ↗ PDF SWL-ELE-06 (P4) PDF · 20 Jan 2026 View ↗ PDF SWL-ELE-04 (P4) PDF · 20 Jan 2026 View ↗ PDF SWL-SEC-08 (P3) PDF · 20 Jan 2026 View ↗ PDF SWL-SEC-01 (P2).pdf PDF · 27 Oct 2025 View ↗ PDF APPENDIX E - Malone Associates 4494-2025-01-04-Structural Report.pdf PDF · 27 Oct 2025 View ↗ PDF APPENDIX F -BS5837 - 86 Southwood Lane - Arbtech AIA 03.pdf PDF · 27 Oct 2025 View ↗ PDF SWL-PLA-07 (P3).pdf PDF · 27 Oct 2025 View ↗ PDF APPENDIX C - Whole Life Carbon Calculations.pdf PDF · 27 Oct 2025 View ↗ PDF SWL-ELE-07 (P3).pdf PDF · 27 Oct 2025 View ↗ PDF APPENDIX E - Malone Associates email on retaining wall.pdf PDF · 27 Oct 2025 View ↗ PDF ApplicationFormRedacted.pdf PDF · 27 Oct 2025 View ↗ PDF SW-PLA-02 (P3).pdf PDF · 27 Oct 2025 View ↗ PDF APPENDIX D - A2 Studio Factual Report and GMA.pdf PDF · 27 Oct 2025 View ↗ PDF SWL-ELE-05 (P3).pdf PDF · 27 Oct 2025 View ↗ PDF SWL-PLA-01 (P4).pdf PDF · 27 Oct 2025 View ↗ PDF APPENDIX A - PHPP Extracts.pdf PDF · 27 Oct 2025 View ↗ PDF SWL-ELE-03 (P3).pdf PDF · 27 Oct 2025 View ↗ PDF SWL-LOC-01 (P2).pdf PDF · 27 Oct 2025 View ↗ PDF SWL-PLA-05 (P3).pdf PDF · 27 Oct 2025 View ↗ PDF SWL-ELE-01 (P3).pdf PDF · 27 Oct 2025 View ↗ PDF SWL-ELE-08 (P3).pdf PDF · 27 Oct 2025 View ↗ PDF SWL-ELE-02 (P3).pdf PDF · 27 Oct 2025 View ↗ PDF Arbtech TPP 03 PDF · 27 Oct 2025 View ↗

All documents on the council site ↗

Associated applications 5

Site constraints 7

Highgate 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 ↗
Archaeological priority area
An assessment or field evaluation may be asked for before ground works.
The council or Historic England considers archaeology likely here. A desk-based assessment, and sometimes trial trenching, can be asked for with the application.
Air quality management area: Haringey 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 ↗
5 listed buildings within 150 m
Nearest: Hillside, Grade II, 31 m away · 5 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 5 with distances
Historic England ↗
Local nature reserve 300 m away: Parkland Walk
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.
Also on the record
Inside the Haringey built-up area; Public transport access: PTAL 4 (good), 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 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 1

Last sold for £950,000 in November 2020. Terraced house, freehold.

5 November 2020£950,000

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

Building

Floor area85 m² (915 sq ft)
Energy ratingE (42 out of 100), could reach C
PropertyEnd-terrace house, 4 habitable rooms
Built1950 to 1966
HeatingElectric storage heaters
WallsCavity wall, filled cavity

From the energy performance certificate lodged in January 2019, the latest held for this property, matched to this application by its address. The building may have changed since. View the certificate

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Important details

Council
Haringey
Application type
Householder planning permission
Postcode
N6 5SY
Received
around 27 Oct 2025
Validated
27 Oct 2025
Ward
Highgate
Decision
Approve with Conditions
Decision date
27 Jan 2026
Decision level
Delegated Decision
Applicant
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How this decision compares

Decided in 92 days from validation, 36 days slower than Haringey's median of 56 for householder applications. Approved, as 91% of householder applications here are.

64%decided within 8 weeks
91%approved
78,917decided in the last year

Plota live figures for householder applications decided across the UK in the last twelve months, from validation; too few recent householder applications in Haringey to go on. Haringey decision record →

Public comments

8comments received
3 objecting1 neutral4 supporting

50% support · above the UK average of 16%

Last counted 10 Oct 2026

Read the comments on the council site ↗

Haringey
Planning Authority Score
4/10
Below average
#192 of 296 councils
Relevant to this application:
Householder decisions

Haringey is slower than most councils at deciding householder applications, ranking #209 out of 296. Householder applications are slightly more likely to be approved here (91%) 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
Haringey decision statistics
Based on MHCLG data, the year to March 2026
85%
Overall approval rate
Below avg (87%) #206 of 296
91%
Householder approved
Above avg (90%) #174 of 296
55%
Decided in 8 weeks
Below avg (63%) #209 of 296
40%
Extended time limit
Below avg (41%) #151 of 296
83%
Minor dwellings approved
279 decided (1-9 homes)
100%
Major dwellings approved
8 decided (10+ homes)
46%
Change of use approved
28 decided
1,469
Total decisions
217 refused in the year to March 2026

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.