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15 High Street Longstanton Cambridgeshire CB24 3BP

26/02923/PRIORPrior ApprovalRefused
Outline / PiP

Refused on 28 September 2026

Council decision: Prior Approval Refused2 reasons for refusal

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

Conversion and change of use of an existing two storey brick barn from use Class B1a to 1 No. dwellinghouse Class C3 and conversion of storage areas to rear to habitable space

Received
3 August 2026
Public comments
0 · last counted 2 October 2026
Ward
Longstanton
Agent
S Andrews Design & Architecture Ltd
  1. Received3 Aug
  2. Validated3 Aug
  3. Consult.27 Aug
  4. Target28 Sep
  5. Decided28 Sep

Decided in 56 days (council typically 49)

About this application

This is an outline application for a change of use at 15 High Street Longstanton Cambridgeshire CB24 3BP. South Cambridgeshire has handled 854 applications of this type. This one was decided in 56 days, 7 days longer than South Cambridgeshire's typical decision time. The site is in the Longstanton conservation area. There has been 1 other application at this address. In the past year there have been 91 applications across Longstanton. We hold 1,342 applications in total for the CB24 postcode area.

81% of outline applications at South Cambridgeshire District Council were approved. Across all application types, the council typically decides in about 7 weeks (median).

Based on decided applications received in the last 3 years.Planning something similar? See what gets approved on your street

Why it was refused

  1. The former agricultural barn contributes to the significance of the rural conservation area through its character and appearance as a simple and traditional agricultural structure and its prominent position on the street in a historic centre of the village. The proposals require external alterations that are not sufficiently detailed and require full planning permission. It fails to meet the requirements under MA.2 (1) (e) of the General Permitted Development Order (2015) (as amended).
  2. Development is not permitted under Class MA if habitable rooms are not provided with adequate natural light. The alterations proposed, to ensure light can reach all habitable rooms, require full planning permission. This has not been sought. The building, in its existing form, is not capable of providing adequate natural light to serve any of the habitable rooms. It fails to meet the requirements under MA.2 (1) (f) of the General Permitted Development Order (2015) (as amended).

From the council's decision notice.

Application details

Postcode
CB24 3BP
Application type
Prior Approval
Scale / size
Small
Parish
Longstanton CP
District
South Cambridgeshire District Council

Planning application dates

Date validated
3 August 2026
Last date for comments
27 August 2026
Target decision date
28 September 2026

Applicant and agent

Agent
S Andrews Design & Architecture Ltd
Agent address
18 Fulmar Court Spalding Peterborough PE11 7AJ Gb

Planning decision

Case officer
Melissa Reynolds
Statutory period
56 days

Additional information

Documents
25

Site constraints

Checking the site
2/3
Council recordsAppealsFlood risk

Designations that overlap or adjoin the site outline.

  • Flood zone 3: High probability (rivers and sea)Part of the site
  • Conservation area: LongstantonPart of the site
Also checked, none recorded (23)

flood storage 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: South Cambridgeshire

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