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The Manor Main Street Grendon Underwood Buckinghamshire HP18 0SW

PL/25/5318/FAFull ApplicationAwaiting decision
Full
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

Internal and external alterations to existing outbuilding comprising replacement windows, removal of 1 no. existing front dormer and installation of 3 no. front dormers and repairs to roof with replacement roof tiles.

Received
17 December 2025
Decision due
11 February 2026
Decision level
Delegated (officer decision)
Ward
Grendon Underwood and The Claydons
Agent
Locksley Architects
  1. Received17 Dec
  2. Validated17 Dec
  3. Consult.13 Jan
  4. Target11 Feb
  5. Decided

Have your say

Comments close on 13 January.

Comment on the council's siteDocuments (4)

About this application

This is a full planning application for a dormer extension at The Manor Main Street Grendon Underwood Buckinghamshire HP18 0SW. Buckinghamshire has handled 2,296 applications of this type. It has been with the council since 17 December 2025 and is still awaiting a decision. The site is in the Grendon Underwood conservation area, with 2 listed buildings nearby. There are no previous applications recorded at this address. In the past year there have been 116 applications across Grendon Underwood and The Claydons. We hold 2,251 applications in total for the HP18 postcode area.

87% of full 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
HP18 0SW
Application type
Full Application
Scale / size
Small
Parish
Grendon Underwood

Planning application dates

Date validated
17 December 2025
Consultation expiry
4 February 2026
Consultation start
23 December 2025
Consultation end
13 January 2026
Neighbour consultation start
23 December 2025
Neighbour consultation end
13 January 2026
Last date for comments
4 February 2026

Applicant and agent

Agent
Locksley Architects
Architect profile
LOCKSLEY ARCHITECTS LIMITED
Agent address
11 Pembridge Mews Notting Hill London W11 3EQ

Planning decision

Statutory period
56 days

Publicity

Last advertised
14 January 2026
Advertisement expiry
4 February 2026

Additional information

Documents
4

Site constraints

Checking the site
2/3
Council recordsAppealsFlood risk

Designations that overlap or adjoin the site outline.

  • Conservation area: Grendon UnderwoodPart of the site
  • Listed building: Grade II: Grendon Underwood War MemorialOn or next to this site
  • Tree Preservation Order: Ref 1989Part of the site
  • Flood zone 1: Low probability (rivers and sea)
Also checked, none recorded (21)

flood storage areas, Article 4 directions, 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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Before the decision

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A listed building is on or next to this site.

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