18 Garden Avenue, Mitcham, Surrey, Merton, CR4 2EA Data via plota.co.uk

26/HOUSE/2372 - Householder Pending Consideration
Extensions & alterations

Proposal

Hip to gable, raising the ridge by 200mm, erection of rear dormer and installation of x3 rooflights to front roofslope&x1 window to gable end Data via plota.co.uk

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View original council record ↗Last checked

Application progress

✓
Received
26 Oct 2026
Decision
Expected by 21 Dec 2026

Under consideration

No decision has been issued yet. Plota predicts a decision between 20 Dec 2026 and 1 Jan 2027, from Merton's recent extensions.

Comments are open until 24 Nov 2026

Comment on this application ↗

Documents 15

Statements & assessments 1

PDF Commenter’s name hidden Show Supporting Document Planning Public · 26 Oct 2026 View ↗

Plans & drawings 11

PDF C26-248-05 - Existing and Proposed First Floor Plans.pdf Plans · 26 Oct 2026 View ↗ PDF C26-248-04 - Existing and Proposed Ground Floor Plans.pdf Plans · 26 Oct 2026 View ↗ PDF C26-248-06 - Existing and Proposed Loft Floor Plans.pdf Plans · 26 Oct 2026 View ↗ PDF C26-248-03 - Proposed Block Plan.pdf Plans · 26 Oct 2026 View ↗ PDF C26-248-02 - Existing Block Plan.pdf Plans · 26 Oct 2026 View ↗ PDF C26-248-08 - Existing and Proposed Front Elevations.pdf Plans · 26 Oct 2026 View ↗ PDF C26-248-01 - Location Plan.pdf Plans · 26 Oct 2026 View ↗ PDF C26-248-09 - Existing and Proposed Side Elevations 01.pdf Plans · 26 Oct 2026 View ↗ PDF C26-248-10 - Existing and Proposed Rear Elevations.pdf Plans · 26 Oct 2026 View ↗ PDF C26-248-11 - Existing and Proposed Side Elevations 02.pdf Plans · 26 Oct 2026 View ↗ PDF C26-248-12 - Existing and Proposed Sections 01.pdf Plans · 26 Oct 2026 View ↗

Application forms 1

PDF ApplicationFormRedacted.pdf Application Forms/Certificates · 26 Oct 2026 View ↗

Other documents 2

PDF Commenter’s name hidden Show Supporting Document Planning Public · 26 Oct 2026 View ↗
PDF Commenter’s name hidden Show Supporting Document Planning Public · 26 Oct 2026 View ↗

All documents on the council site ↗

Site constraints 4

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 ↗
Also on the record
Local nature reserve 332 m away: Oakleigh Way; Inside the Merton built-up area; Public transport access: PTAL 1b (very poor), 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 4 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 2

Last sold for £320,000 in December 2011. Semi-detached house, freehold.

14 December 2011£320,000
16 December 1998£128,000

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

Building

Floor area103 m² (1,109 sq ft)
Energy ratingD (60 out of 100)
PropertySemi-detached 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 October 2011, 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
Householder
Postcode
CR4 2EA
Received
26 Oct 2026
Validated
26 Oct 2026
Ward
Graveney
Case officer
Show
Target decision
21 Dec 2026
Decision level
Delegated
Applicant
Show
Agent
Show

Decision outlook

Day 11 of the 56-day target. Merton usually decides extensions by day 56.

Day 1145 days to the 56-day target
50%decided within 8 weeks
91%approved
1,375decided 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

Comments by
24 Nov 2026
Statutory expiry
21 Dec 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
21 Garden Avenue Mitcham CR4 2EE
APPLICATION FOR THE ERECTION OF A REAR DORMER ROOF EXTENSION AND INSTALLATION OF FOUR ROO…
25/P0791
2025 Approved
21 Garden Avenue Mitcham CR4 2EE
ERECTION OF SINGLE STOREY REAR EXTENSION, NEW ENTRANCE DOOR AND NEW CANOPY.
25/P0218
2024 Refused
Ground Floor Flat, 36 Elmhurst Avenue Mitcham CR4 2HN
APPLICATION FOR ERECTION OF A DETACHED SINGLE STOREY OUTBUILDING IN THE REAR GARDEN FOR U…
24/P1273/INVALID
2024 Refused
Ground Floor Flat, 36 Elmhurst Avenue Mitcham CR4 2HN
APPLICATION FOR ERECTION OF A DETACHED SINGLE STOREY OUTBUILDING IN THE REAR GARDEN FOR U…
24/P1273
2024 Approved
25 Garden Avenue Mitcham CR4 2EE
ERECTION OF A SINGLE STOREY REAR EXTENSION (RETROSPECTIVE)
24/P0814
2024 Approved
25 Garden Avenue Mitcham CR4 2EE
ERECTION OF A SINGLE STOREY REAR EXTENSION (RETROSPECTIVE)
24/P0814/INVALID
2020 Approved
Land Adjacent 1e Beecholme Avenue Mitcham
ERECTION OF A 1 BEDROOM SELF CONTAINED DWELLINGHOUSE AT REAR OF EXISTING PROPERTY.
20/P0287
2023 Approved
5 Elmhurst Avenue Mitcham CR4 2HP
ERECTION OF A TWO STOREY REAR/SIDE EXTENSION AND ERECTION OF A SINGLE STOREY REAR EXTENSI…
23/P1247
2023 Approved
5 Elmhurst Avenue Mitcham CR4 2HP
ERECTION OF A TWO STOREY REAR/SIDE EXTENSION AND ERECTION OF A SINGLE STOREY REAR EXTENSI…
23/P1247/INVALID
2023 Approved
43 Garden Avenue Mitcham CR4 2EE
APPLICATION FOR A LAWFUL DEVELOPMENT CERTIFICATE IN RESPECT OF THE PROPOSED ERECTION OF A…
23/P0983
2022 Approved
48 Elmhurst Avenue Mitcham CR4 2HN
ERECTION OF A GROUND FLOOR INFILL EXTENSION AND A FIRST FLOOR SIDE EXTENSION
22/P2729
2022 Approved
25 Elmhurst Avenue Mitcham CR4 2HP
APPLICATION FOR A LAWFUL DEVELOPMENT CERTIFICATE FOR A HIP TO GABLE & REAR ROOF DORMER EX…
22/P2039
2022 Approved
34 Melrose Avenue Mitcham CR4 2EG
ERECTION OF A SINGLE STOREY REAR EXTENSION (AMENDED)
22/P1724
2022 Refused
5 Elmhurst Avenue Mitcham Surrey CR4 2HP
ERECTION OF A TWO STOREY REAR/SIDE EXTENSION
22/P1462
2021 Approved
49 Garden Avenue Mitcham CR4 2EE
ERECTION OF A SINGLE STOREY REAR EXTENSION.
21/P3995
2020 Approved
43 Elmhurst Avenue Mitcham CR4 2HP
APPLICATION FOR A LAWFUL DEVELOPMENT CERTIFICATE IN RESPECT OF THE PROPOSED ERECTION OF A…
20/P1434
2020 Approved
52 Garden Avenue Mitcham CR4 2EA
ERECTION OF A PART SINGLE PART TWO STOREY REAR EXTENSION WITH NEW RAISED PATIO, AND TWO S…
20/P0403
2020 Approved
19 Garden Avenue Mitcham CR4 2EE
APPLICATION FOR A LAWFUL DEVELOPMENT CERTIFICATE IN RESPECT OF A PROPOSED REAR ROOF EXTEN…
20/P0649
2020 Approved
20 Garden Avenue Mitcham CR4 2EA
APPLICATION FOR A LAWFUL DEVELOPMENT CERTIFICATE IN RESPECT OF THE PROPOSED ERECTION OF A…
20/P0587
2019 Approved
9 Garden Avenue Mitcham CR4 2EA
APPLICATION FOR A LAWFUL DEVELOPMENT CERTIFICATE FOR THE ERECTION OF A REAR ROOF EXTENSION
19/P3608
2016 Withdrawn
Flat 1 31 Elmhurst Avenue Mitcham CR4 2HP
ERECTION OF A SINGLE STOREY REAR EXTENSION
16/P4250
2016 Approved
30 Garden Avenue Mitcham CR4 2EA
ERECTION OF A SINGLE STOREY REAR EXTENSION
16/P3198
2016 Approved
9 Melrose Avenue Mitcham CR4 2EH
CONVERSION OF DWELLINGHOUSE INTO 2 SELF CONTAINED FLATS 1 X 1 BED & 1 X 3 BED INCORPORATI…
16/P1607
2016 Refused
9 Melrose Avenue Mitcham CR4 2EH
CONVERSION OF DWELLINGHOUSE INTO 2 SELF CONTAINED FLATS 1 X 2 BED & 1 X 3 BED INCORPORATI…
16/P0280/INVALID
2016 Refused
9 Melrose Avenue Mitcham CR4 2EH
CONVERSION OF DWELLINGHOUSE INTO 2 SELF CONTAINED FLATS 1 X 2 BED & 1 X 3 BED INCORPORATI…
16/P0280
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
Source: MHCLG planning statistics · See full council rankings

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.