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128 Tennyson Avenue New Malden KT3 6NA

25/P3400Section 192 Certificate - proposedApproved
Outline / PiP

Approved on 8 December 2025

Council decision: Issue Certificate of LawfulnessDelegated (officer decision)

Approximate site (title boundary)
Boundary © HM Land Registry, © Ordnance Survey · details

This information is subject to Crown copyright and database rights 2026 and is reproduced with the permission of HM Land Registry. The polygons (including the associated geometry, namely x, y co-ordinates) are subject to Crown copyright and database rights 2026 Ordnance Survey AC0000851063. Conditions of use.

Proposal

APPLICATION FOR A LAWFUL DEVELOPMENT CERTIFICATE IN RESPECT OF THE PROPOSED ERECTION OF A REAR ROOF DORMER EXTENSION WITH A JULIET BALCONY AND THE INSTALLATION OF 3 X ROOFLIGHTS TO THE FRONT SLOPE.

Received
18 November 2025
Decision level
Delegated (officer decision)
Ward
West Barnes
  1. Received18 Nov
  2. Validated3 Dec
  3. Consult.18 Nov
  4. Target
  5. Decided8 Dec

Decided in 5 days (council typically 56)

About this application

This is an outline application for a dormer extension at 128 Tennyson Avenue New Malden KT3 6NA. Merton has handled 637 applications of this type. This one was decided in 20 days, 5 weeks quicker than Merton's typical decision time. There are no previous applications recorded at this address. In the past year there have been 111 applications across West Barnes. We hold 1,213 applications in total for the KT3 postcode area.

79% of outline applications at London Borough of Merton were approved. Across all application types, the council typically decides in about 8 weeks (median).

Based on decided applications received in the last 3 years.See what's approved near your address

Application details

Postcode
KT3 6NA
Application type
Section 192 Certificate - proposed
Development type
Development monitoring information not needed
Scale / size
Small

Planning application dates

Date validated
3 December 2025
Last date for comments
18 November 2025
Application expires
13 January 2026
Permission expires
8 December 2028

Planning decision

Statutory period
41 days

Additional information

Documents
20

Site constraints

Checking the site
2/3
Council recordsAppealsFlood risk

Designations that overlap or adjoin the site outline.

  • Flood zone 2: Medium probability (rivers and sea)Part of the site

Not published by this council, so not checked: Article 4 directions and tree preservation orders. Ask the council if these matter.

Also checked, none recorded (22)

flood storage areas, conservation areas, listed buildings, green belt, scheduled monuments, World Heritage Sites, World Heritage Site buffer zones, registered parks and gardens, registered battlefields, Heritage at Risk entries, nutrient neutrality catchments, national parks, National Landscapes, SSSIs, Special Areas of Conservation, Special Protection Areas, Ramsar sites, ancient woodland, national nature reserves, local nature reserves, heritage coasts and brownfield registers.

A guide only, from official open data; it is not a planning search. Flood zones cover rivers and sea, not surface water.

Data © Crown copyright and others · sources and licences

Contains public sector information from planning.data.gov.uk (MHCLG and local planning authorities), licensed under the Open Government Licence v3.0. © Crown copyright and database right 2026.

© Historic England 2026. Contains Ordnance Survey data © Crown copyright and database right 2026. The Historic England GIS Data contained in this material was obtained on 2026-11-03. The most publicly available up to date Historic England GIS Data can be obtained from HistoricEngland.org.uk.

© Natural England copyright. Contains Ordnance Survey data © Crown copyright and database right 2026.

© Environment Agency copyright and/or database right 2026. All rights reserved. Flood Map for Planning, Open Government Licence v3.0.

Contains Ordnance Survey data © Crown copyright and database right 2026.

Source: Office for National Statistics licensed under the Open Government Licence v.3.0. Contains OS data © Crown copyright and database right 2026.

Source: Merton

Contains public sector information from the Planning London Datahub, licensed under the Open Government Licence v3.0.

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