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12 Chiltern Avenue Stone Buckinghamshire HP17 8QY

PL/25/4348/SACertificate of Lawful Use - ProposedAwaiting decision
Outline / PiP
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

Certificate of Lawfulness for Proposed part two storey with hipped roof, part single storey flat roof extension to the rear and dormer to roof

Received
6 October 2025
Decision due
1 December 2025
Decision level
Delegated (officer decision)
Ward
Haddenham and Stone
Agent
WGArchitects Ltd
  1. Received6 Oct
  2. Validated6 Oct
  3. Consult.
  4. Target1 Dec
  5. Decided

Have your say

Comment on the council's siteDocuments (6)

About this application

This is an outline application for a dormer extension at 12 Chiltern Avenue Stone Buckinghamshire HP17 8QY. Buckinghamshire has handled 827 applications of this type. It has been with the council since 6 October 2025 and is still awaiting a decision. There has been 1 other application at this address. In the past year there have been 162 applications across Haddenham and Stone. We hold 1,041 applications in total for the HP17 postcode area.

73% of outline applications at Buckinghamshire Council 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.Planning something similar? See what gets approved on your street

Application details

Postcode
HP17 8QY
Application type
Certificate of Lawful Use - Proposed
Scale / size
Small
Parish
Stone Bishopstone and Hartwell

Planning application dates

Date validated
6 October 2025

Applicant and agent

Agent
WGArchitects Ltd
Architect profile
WGARCHITECTS LTD
Agent address
Falcon Chambers Thomas Street LLANELLI SA15 3JB

Planning decision

Statutory period
56 days

Additional information

Documents
6

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)
Also checked, none recorded (24)

flood storage areas, conservation areas, listed buildings, Article 4 directions, tree preservation orders, 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: Buckinghamshire

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