112 Byron Avenue, New Malden, Surrey, Merton, KT3 6EZ Data via plota.co.uk

26/NMA/1916 - Non-Material Amendment - Section 96A Refused
Admin / procedural

Proposal

Application for non-material amendments to application 26/HOUSE/0738 erection of a single storey rear extension and conversion of garage into habitable room and the alterations to the front porch. Non-material amendment relates to to allowing for a minor 150mm technical adjustment to the approved roof heights. The external flat roof line will adjust from 3.00m to 3.15m to incorporate a building regulations upstand, and consequently, the central roof lantern peak will adjust from 3.40m to 3.55m (measured from the highest adjacent external ground level). Data via plota.co.uk

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View original council record ↗Last checked

Application progress

✓
Received
2 Sept 2026
✗
Refused
30 Sept 2026
Appeal
Not lodged

Refused on 30 Sept 2026 · Delegated · Last checked 30 Sept 2026

Documents 4

Decision & officer reports 2

PDF Decision Notice Decision Notice · 30 Sept 2026 View ↗ PDF Officer Report Officer Report · 30 Sept 2026 View ↗

Plans & drawings 1

PDF Plans and Elevations Plans · 7 Sept 2026 View ↗

Application forms 1

PDF ApplicationFormRedacted.pdf Application Forms/Certificates · 7 Sept 2026 View ↗

All documents on the council site ↗

Associated applications 2

Site constraints 5

Flood zone 2, rivers and sea
Medium chance: between a 1 in 100 and 1 in 1,000 annual chance from rivers, or 1 in 200 to 1 in 1,000 from the sea. Any development here needs a flood risk assessment. Defences are not counted.
The Environment Agency flood map for planning. Homes in zone 3 must also pass the sequential test. Surface water flooding is a separate map.
Flood map ↗
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 about 339 m away: Sir Joseph Hood Memorial Wood; Inside the Merton built-up area; Public transport access: PTAL 2 (poor), TfL 2023, for the 100 m square.
Not affected
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.

Building

Floor area94 m² (1,012 sq ft)
Energy ratingD (62 out of 100), could reach B
PropertyEnd-terrace house, 4 habitable rooms
Built1930 to 1949
HeatingBoiler and radiators, mains gas
WallsSolid brick, as built, no insulation (assumed)

From the energy performance certificate lodged in January 2025, 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
Non-Material Amendment - Section 96A
Postcode
KT3 6EZ
Received
2 Sept 2026
Validated
2 Sept 2026
Ward
West Barnes
Case officer
Show
Target decision
30 Sept 2026
Decision
Refuse Non-Material Amendment To Planning Permission
Decision date
30 Sept 2026
Decision level
Delegated
Applicant
Show
Agent
Cho Ho

Consultation & key dates

Statutory expiry
30 Sept 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
112 Byron Avenue New Malden KT3 6EZ
APPLICATION FOR A LAWFUL DEVELOPMENT CERTIFICATE IN RESPECT OF THE PROPOSED ERECTION OF A…
25/P2077
2025 Approved
139 Claremont Avenue New Malden KT3 6QP
ERECTION OF A GROUNDFLOOR WRAP AROUND EXTENSION AND A FIRST FLOOR SIDE EXTENSION
25/P1472
2024 Approved
88 Byron Avenue New Malden KT3 6EZ
DEMOLITION OF ATTACHED SIDE GARAGE AND ERECTION OF A SINGLE STOREY SIDE EXTENSION.
24/P3448
2024 Approved
125 Claremont Avenue New Malden KT3 6QR
ERECTION OF SINGLE STOREY FRONT PORCH, REAR AND SIDE EXTENSION.
24/P2471
2024 Approved
125 Claremont Avenue New Malden KT3 6QR
ERECTION OF SINGLE STOREY FRONT PORCH, REAR AND SIDE EXTENSION.
24/P2471/INVALID
2024 Approved
135 Claremont Avenue New Malden Surrey KT3 6QR
ERECTION OF SINGLE STOREY REAR EXTENSION.
24/P2661
2024 Refused
135 Claremont Avenue New Malden Surrey KT3 6QR
ERECTION OF SINGLE STOREY REAR EXTENSION AND THE ERECTION OF A PROPOSED SINGLE STOREY OUT…
24/P2019/INVALID
2024 Refused
135 Claremont Avenue New Malden Surrey KT3 6QR
ERECTION OF SINGLE STOREY REAR EXTENSION AND THE ERECTION OF A PROPOSED SINGLE STOREY OUT…
24/P2019
2024 Approved
131 Claremont Avenue New Malden KT3 6QR
ERECTION OF SINGLE STOREY SIDE EXTENSION
24/P1584
2024 Approved
131 Claremont Avenue New Malden KT3 6QR
APPLICATION FOR A LAWFUL DEVELOPMENT CERTIFICATE IN RESPECT OF THE PROPOSED ERECTION OF H…
24/P0590
2023 Approved
133 Claremont Avenue New Malden KT3 6QR
DEMOLITION OF EXISTING CONSERVATORY AND ERECTION OF A SINGLE STOREY REAR EXTENSION.
23/P2054/INVALID
2023 Approved
133 Claremont Avenue New Malden KT3 6QR
DEMOLITION OF EXISTING CONSERVATORY AND ERECTION OF A SINGLE STOREY REAR EXTENSION.
23/P2054
2022 Approved
89 Byron Avenue New Malden KT3 6EZ
RETENTION OF SINGLE STOREY SIDE/REAR EXTENSION AND RENDERING THE ENTIRE DWELLING HOUSE
22/P2658
2023 Approved
87 BYRON AVENUE, MOTSPUR PARK NEW MALDEN SURREY
ERECTION OF A HIP TO GABLE; REAR DORMER AND x3 ROOF LIGHTS TO THE FRONT ROOF SLOPE
23/P0103
2022 Approved
89 Byron Avenue New Malden KT3 6EZ
ERECTION OF A SINGLE STOREY SIDE AND REAR EXTENSION
22/P1607
2022 Approved
110 Byron Avenue New Malden KT3 6EZ
ERECTION OF FIRST FLOOR REAR EXTENSION
22/P1200
2022 Approved
125 Claremont Avenue New Malden KT3 6QR
ERECTION OF SINGLE STOREY REAR AND SIDE EXTENSION AND THE ERECTION OF A FRONT PORCH
22/P1369
2022 Refused
125 Claremont Avenue New Malden KT3 6QR
CONVERSION OF SINGLE DWELLINGHOUSE INTO 2 x SELF-CONTAINED FLATS INCLUDING A FRONT PORCH…
22/P0649
2022 Approved
110 Byron Avenue New Malden KT3 6EZ
ERECTION OF A SINGLE STOREY SIDE EXTENSION , ERECTION OF FRONT PORCH AND CONVERSION OF EX…
22/P0041
2021 Approved
135 Claremont Avenue New Malden Surrey KT3 6QR
ERECTION OF REAR ROOF EXTENSION
21/P4174/INVALID
2016 Withdrawn
411 West Barnes Lane New Malden Surrey KT3 6PA
SINGLE STOREY SIDE AND FRONT EXTENSION, INVOLVING DEMOLITION OF EXISTING GARAGE AND OUTBU…
16/P4789/INVALID
2016 Approved
121 Claremont Avenue New Malden KT3 6QR
DEMOLITION OF EXISTING GARAGE AND ERECTION OF A SINGLE STOREY FRONT, SIDE & REAR EXTENSIO…
16/P1922
2016 Withdrawn
116 Byron Avenue New Malden KT3 6EZ
ERECTION OF A SINGLE STOREY REAR CONSERVATORY
16/P2349/INVALID
2016 Withdrawn
116 Byron Avenue New Malden KT3 6EZ
ERECTION OF A SINGLE STOREY REAR CONSERVATORY
16/P2349
2016 Refused
121 Claremont Avenue New Malden KT3 6QR
APPLICATION FOR A LAWFUL DEVELOPMENT CERTIFICATE FOR THE PROPOSED ERECTION OF A HIP TO GA…
16/P1712
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

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.