236 St Helier Avenue, Morden, Merton, SM4 6JZ Data via plota.co.uk

Approved 26/LDCP/1229 - Lawful Development Certificate - Proposed - Section 192
Extensions & alterations
Council
Merton 4.5/10
Date received
18 Jul 2026
Postcode
SM4 6JZ
Type
Lawful Development Certificate - Proposed - Section 192

Description

Application for a lawful development certificate in respect of the proposed erection of a hip to gable, rear dormer roof extension and front rooflights Data via plota.co.uk

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Last checked

Site constraints 2

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
Inside the Merton built-up area.
Not affected
Outside flood zones 2 and 3 · Not green belt · No scheduled monument at the site

Checked on 11 September 2026. Historic England, the Environment Agency, Natural England 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.

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Historical activity at this location

17 nearby applications on record - archival context, not part of the live application.

Within ~100m

Nearby activity

2025 Approved
237 St Helier Avenue Morden SM4 6JH
APPLICATION FOR A LAWFUL DEVELOPMENT CERTIFICATE IN RESPECT OF THE PROPOSED ERECTION OF A…
25/P3049
2023 Approved
26 Croxden Walk Morden SM4 6JY
APPLICATION FOR A CERTIFICATE OF LAWFULNESS FOR THE PROPOSED ERECTION OF A REAR ROOF DORM…
23/P0614
2023 Approved
155 Canterbury Road Morden SM4 6QG
APPLICATION FOR A LAWFUL DEVELOPMENT CERTIFICATE IN RESPECT OF THE PROPOSED ERECTION OF A…
23/P0491
2021 Refused
236 St Helier Avenue Morden Surrey SM4 6JZ
ERECTION OF A TWO STOREY SIDE EXTENSION AND ASSOCIATED ROOF ALTERATIONS
21/P3835
2021 Approved
214 St Helier Avenue Morden SM4 6LA
APPLICATION FOR A LAWFUL DEVELOPMENT CERTIFICATE IN RESPECT OF THE PROPOSED ERECTION OF A…
21/P3025
2021 Approved
217 St Helier Avenue Morden SM4 6JH
APPLICATION FOR A CERTIFICATE OF LAWFULNESS FOR THE PROPOSED HIP TO GABLE AND REAR ROOF D…
21/P2856
2021 Approved
7 Cerne Road Morden Surrey SM4 6QQ
APPLICATION FOR A LAWFUL DEVELOPMENT CERTIFICATE IN RESPECT OF THE PROPOSED ERECTION OF A…
21/P2060
2020 Approved
215 St Helier Avenue Morden SM4 6JH
HIP TO GABLE EXTENSION; REAR DORMER WINDOW AND 3 NO ROOFLIGHTS TO FRONT ROOF PLANE TO FAC…
20/P2871
2020 Approved
155 Canterbury Road Morden SM4 6QG
APPLICATION FOR A LAWFUL DEVELOPMENT CERTIFICATE IN RESPECT OF THE PROPOSED ERECTION OF A…
20/P3043
2020 Approved
2 Cerne Road Morden Surrey SM4 6QQ
APPLICATION FOR A LAWFUL DEVELOPMENT CERTIFICATE IN RESPECT OF THE PROPOSED ERECTION OF A…
20/P3020
2020
5 Croxden Walk Morden SM4 6JY
ERECTION OF A FRONT PORCH EXTENSION AND HIP TO GABLE WITH REAR ROOF EXTENSION TO 5 CROXDE…
20/P1530
2020 Approved
39 Crowland Walk Morden SM4 6QH
APPLICATION FOR A CERTIFICATE OF LAWFULNESS FOR THE ERECTION OF A FRONT PORCH
20/P0559
2019 Refused
155 Canterbury Road Morden SM4 6QG
ERECTION OF A SINGLE STOREY OUTBUILDING AT REAR OF GARDEN ANCILLARY TO MAIN DWELLINGHOUSE
19/P2900
2019 Refused
155 Canterbury Road Morden SM4 6QG
ERECTION OF A SINGLE STOREY OUTBUILDING AT REAR OF GARDEN ANCILLARY TO MAIN DWELLINGHOUSE
19/P2900/INVALID
2019 Approved
39 Crowland Walk Morden SM4 6QH
DEMOLITION OF EXISTING CONSERVATORY AND ERECTION OF SINGLE STOREY REAR EXTENSION
19/P1378
2017 Approved
214 St Helier Avenue Morden SM4 6LA
PART SINGLE PART TWO STOREY SIDE EXTENSION AND ASSOCIATED ROOF EXTENSION.
17/P4287
2016 Refused
248 St Helier Avenue Morden SM4 6JZ
PRIOR APPROVAL IN RELATION TO A SINGLE STOREY REAR EXTENSION, WITH THE FOLLOWING DIMENSIO…
16/P1448
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