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25 Ashley Park Avenue Walton-On-Thames Surrey KT12 1ER

2025/2444Lawful Development Cert - ProposedRefused
Outline / PiP

Refused on 23 December 2025

Council decision: Refuse Lawful Development CertificateDelegated (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

Rear dormer windows to provide rooms in the roofspace and side rooflights.

Received
23 September 2025
Decision level
Delegated (officer decision)
Ward
Walton Central Ward
  1. Received23 Sep
  2. Validated23 Sep
  3. Consult.
  4. Target18 Nov
  5. Decided23 Dec

Decided in 91 days (council typically 63)

About this application

This is an outline application for a dormer extension at 25 Ashley Park Avenue Walton-On-Thames Surrey KT12 1ER. Elmbridge has handled 1,121 applications of this type. This one was decided in 91 days, 4 weeks longer than Elmbridge's typical decision time. The site is in the Diss conservation area, with 20 listed buildings nearby. There have been 2 other applications at this address. In the past year there have been 42 applications across Walton Central Ward. We hold 1,346 applications in total for the KT12 postcode area.

66% of outline applications at Elmbridge Borough Council were approved. Across all application types, the council typically decides in about 9 weeks (median).

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

Application details

Postcode
KT12 1ER
Application type
Lawful Development Cert - Proposed
Scale / size
Small

Planning application dates

Date validated
23 September 2025
Consultation start
13 October 2025
Target decision date
18 November 2025

Applicant and agent

Agent address
Catfish Studio Limited,24 Park Road,London,E17 7QF

Planning decision

Statutory period
56 days

Additional information

Documents
16

Site constraints

Checking the site
2/3
Council recordsAppealsFlood risk

Designations that overlap or adjoin the site outline.

  • Flood zone 1: Low probability (rivers and sea)

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

Possibly incomplete for this council: tree preservation orders.

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: Elmbridge

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