143 Lower Morden Lane, Morden, Surrey, Merton, SM4 4SW Data via plota.co.uk

25/P3308 - Full Planning Permission Approved

Proposal

Erection of a first floor side/rear extension with hipped roof to facilitate the creation of X1 self-contained dwelling to the side of existing dwelling and associated X2 parking spaces and cycle and refuse store in front garden and... Data via plota.co.uk

View original council record ↗Last checked

Application progress

✓
Received
12 Nov 2025
✓
Validated
13 Jan 2026
✓
Approved
17 Jun 2026

Approved on 17 Jun 2026 · Delegated · Last checked 1 Oct 2026

Documents 49

Statements & assessments 4

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Plans & drawings 16

PDF planning/uploads/314646471781536128:: ::25 143 Lower Morden Lane 25 303 A PLANS General Correspondence · 15 Jun 2026 View ↗ PDF planning/uploads/358084021781536123:: ::25 143 Lower Morden Lane 25 302 B SITE PLANS General Correspondence · 15 Jun 2026 View ↗ PDF planning/uploads/544210551779968048:: ::25 304 A PLANS Plans · 28 May 2026 View ↗ PDF planning/uploads/634662431779968042:: ::25 200 A OS and BLOCK Plans · 28 May 2026 View ↗ PDF planning/uploads/955556971779968036:: ::25 401 P A Elevations General Correspondence · 28 May 2026 View ↗ PDF planning/uploads/64315401779968031:: ::25 305 A PLANS Plans · 28 May 2026 View ↗ PDF planning/uploads/218540541779968024:: ::25 302 A SITE PLANS Plans · 28 May 2026 View ↗
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PDF Commenter’s name hidden Show Supporting Document Planning Public View ↗
PDF Commenter’s name hidden Show Supporting Document Planning Public View ↗
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Application forms 2

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Other documents 25

PDF planning/uploads/947758701780996137:: ::Fire Evacuation 143 Lower Morden Ln Morden SM4 4SW General Correspondence · 9 Jun 2026 View ↗ PDF planning/uploads/863812191780996131:: ::Fire Safety Strategy 134 Lower Morden Lane General Correspondence · 9 Jun 2026 View ↗
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All documents on the council site ↗

Associated applications 2

Site constraints 8

Air quality management area: Merton 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 ↗
Local nature reserve about 86 m away: Morden Park
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.
Habitat network: Network Enhancement Zone 2
Where habitat is joined up enough to work as a network. Context, not a constraint on its own.
Also on the record
Conservation area about 84 m away: Upper Morden; Inside the Merton built-up area; Public transport access: PTAL 1b (very poor), TfL 2023, for the 100 m square; Heritage at risk about 84 m away: Upper Morden; Metropolitan Open Land about 86 m away.
Not affected
Outside flood zones 2 and 3 · Not green belt · No scheduled monument at the site

Checked on 6 October 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, 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 £320,000 in March 2008. Semi-detached house, freehold.

14 March 2008£320,000

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

Building

Floor area169 m² (1,819 sq ft)
Energy ratingC (72 out of 100), could reach B
PropertySemi-detached house, 8 habitable rooms
Built1930 to 1949
HeatingBoiler and radiators, mains gas
WallsSolid brick, as built, no insulation (assumed)

From the energy performance certificate lodged in November 2021, 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
Merton
Application type
Full Planning Permission
Postcode
SM4 4SW
Received
12 Nov 2025
Validated
13 Jan 2026
Ward
Lower Morden
Parish
Historic
Case officer
Show
Target decision
18 Jun 2026
Decision
Grant Permission Subject To Conditions
Decision date
17 Jun 2026
Decision level
Delegated
Applicant
Show
Agent
NKM Studio

How this decision compares

Decided in 155 days from validation, 97 days slower than Merton's median of 58 for extensions. Approved, as 91% of extensions here are.

48%decided within 8 weeks
91%approved
1,384decided in the last year

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

Consultation & key dates

Statutory expiry
18 Jun 2026
Merton
Planning Authority Score
4.5/10
Below average
#173 of 296 councils
Relevant to this application:
Householder decisions

Merton ranks #196 out of 296 councils for householder decision speed. Householder applications are slightly more likely to be approved here (92%) than the national average (90%).

These figures are council-wide context, not a prediction for this application. View full council performance
Merton decision statistics
Based on MHCLG data, the year to March 2026
89%
Overall approval rate
Above avg (87%) #135 of 296
92%
Householder approved
Above avg (90%) #158 of 296
57%
Decided in 8 weeks
Below avg (63%) #196 of 296
39%
Extended time limit
Below avg (41%) #139 of 296
54%
Minor dwellings approved
82 decided (1-9 homes)
100%
Major dwellings approved
11 decided (10+ homes)
83%
Change of use approved
24 decided
1,079
Total decisions
115 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.

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.