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Coombesbury Farmhouse Ownham Boxford Newbury RG20 8DE

26/00297/HOUSERefused

Refused on 23 June 2026

Council decision: Refusal2 reasons for refusal

Site boundary (council red line)

Proposal

The addition of a double-storey extension to the rear with rooflight; replacement of existing conservatory and part of outbuilding with a single-storey side extension with veranda; addition of a lantern to the main flat roof; enlargement of patio and associated re- landscaping.

Submitted
10 February 2026
  1. Received10 Feb
  2. Validated10 Feb
  3. Consult.
  4. Target
  5. Decided23 Jun

Decided in 133 days

About this application

This is a planning application for a single storey side extension at Coombesbury Farmhouse Ownham Boxford Newbury RG20 8DE. West Berkshire has handled 5,447 applications of this type. This one was decided in 133 days, 11 weeks longer than West Berkshire's typical decision time. The site is in a conservation area, with 1 listed building nearby. There are no previous applications recorded at this address. We hold 1,024 applications in total for the RG20 postcode area.

Why it was refused

  1. Impact to Non-Designated Heritage Asset The proposed development, by reason of its scale, bulk, design and layout, would fail to preserve the character, appearance and significance of the host dwelling, which is identified as a non-designated heritage asset. The cumulative effect of the two-storey and single- storey extensions would result in an over-dominant and poorly integrated form of development that erodes the historic plan form, including the loss of the traditional yard arrangement and the legibility of the building's original agricultural function. The proposals would also lead to harmful alterations to the historic internal layout and spatial relationships, undermining the evidential and architectural interest of the building. The development therefore fails to demonstrate a sympathetic, high-quality design that responds positively to the asset and its setting, and would harm its significance. As such, the proposal is contrary to the NPPF, Policies SP7 and SP9 of the Local Plan, Policy DM11, and Policy DM28, which require development to conserve the historic and architectural interest of existing dwellings and to protect heritage assets in a manner proportionate to their significance.
  2. Climate Change Policy SP5 of the West Berkshire Local Plan Review 2023-2041requires that the principles of climate change mitigation and adaptation are embedded into new development. The application is not supported by a Sustainability Statement and as such the application fails to demonstrate how these principles have been designed into the scheme. The proposal is therefore contrary to Policies SP5 and DM4 of the West Berkshire Local Plan Review 2023- 2041 and the guidance within the National Planning Policy Framework.

From the council's decision notice.

Application details

Postcode
RG20 8DE

Planning application dates

Date validated
10 February 2026

Site constraints

Checking the site
2/3
Council recordsAppealsFlood risk

Designations that overlap or adjoin the site outline.

  • Nutrient neutrality catchment: River Lambourn SACApplies to new homes and overnight accommodation
  • National Landscape (AONB): North Wessex Downs
  • Flood zone 1: Low probability (rivers and sea)
Also checked, none recorded (22)

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, national parks, 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: West Berkshire

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