3 Mount Ash Road, London, SE26 6LZ Data via plota.co.uk

DC/26/145909 - Full Planning Permission Registered

Proposal

Schedule 1 application for the replacement of the existing windows and rear door on the property with new slimline double glazed timber framed windows on the front elevation, uPVC framed windows on the rear elevation and a new uPVC door on the rear elevation at 3 Mount Ash Road SE26. Data via plota.co.uk

View original council record ↗Last checked

Application progress

✓
Received
28 Oct 2026
✓
Validated
29 Oct 2026
Decision
Expected by 24 Dec 2026

Under consideration

No decision has been issued yet. Plota predicts a decision around 24 Dec 2026, from Lewisham's recent extensions.

Site constraints 6

Sydnenham Hill 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
Small HMO Northern Extension · Mount Ash Road Article 4 Direction. Named permitted development rights are withdrawn here.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.
Local nature reserve 231 m away: Sydenham Hill Wood and Fern Bank
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
2 listed buildings within 150 m; Inside the Lewisham built-up area; Public transport access: PTAL 2 (poor), 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 6 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.

Building

Floor area105 m² (1,130 sq ft)
Energy ratingD (68 out of 100), could reach B
PropertyMid-terrace house, 5 habitable rooms
Built1900 to 1929
HeatingBoiler and radiators, mains gas
WallsSolid brick, as built, no insulation (assumed)

From the energy performance certificate lodged in July 2013, 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
Lewisham
Application type
Full Planning Permission
Postcode
SE26 6LZ
Received
28 Oct 2026
Validated
29 Oct 2026
Ward
Forest Hill
Case officer
Show
Target decision
24 Dec 2026
Decision level
Non-gateway - delegated
Applicant
Show
Agent
Potter Raper
Freehold owner
Show

Decision outlook

Day 13 of the 56-day target. Lewisham usually decides extensions by day 56.

Day 1343 days to the 56-day target
75%decided within 8 weeks
87%approved
906decided in the last year

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

Public comments

No public comments yet.

Last counted 6 Nov 2026

Read the comments on the council site ↗

Consultation & key dates

Alt. reference
PP-15297536
Planning Portal ref
PP-15297536
Statutory expiry
24 Dec 2026
Env. assessment
No
Lewisham
Planning Authority Score
5.8/10
Average
#111 of 296 councils
Relevant to this application:
Householder decisions

Lewisham ranks #127 out of 296 councils for householder decision speed. Householder applications are slightly more likely to be approved here (90%) than the national average (90%).

These figures are council-wide context, not a prediction for this application. View full council performance
Lewisham decision statistics
Based on MHCLG data, the year to March 2026
84%
Overall approval rate
Below avg (87%) #224 of 296
90%
Householder approved
Above avg (90%) #192 of 296
69%
Decided in 8 weeks
Above avg (63%) #127 of 296
31%
Extended time limit
Below avg (41%) #58 of 296
65%
Minor dwellings approved
117 decided (1-9 homes)
92%
Major dwellings approved
12 decided (10+ homes)
57%
Change of use approved
67 decided
1,303
Total decisions
207 refused in the year to March 2026

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.

Freehold owner: Information produced by HM Land Registry. © Crown copyright 2026. Source: HM Land Registry, UK and overseas companies that own property in England and Wales, September 2026 release.