Planning application
21 Coningsby Road High Wycombe Buckinghamshire HP13 5NX
Works: Loft or dormer Windows or glazing Domestic
Read from the description, not a valuation. How we read the register
Permission granted. Work must normally begin within three years of the decision or the permission lapses.
Proposal
Certificate of Lawfulness for proposed change of use from dwelling house (Use Class C3) to a small house in multiple occupation (Use Class C4). Construction of rear dormer window and hip to gable works (Class B), and conversion under Class L of Part 3 of Schedule 2 of the GPDO to a small House in Multiple Occupation (Class C4)
As published by the council, reference PL/25/4525/SA
Application record
- Reference
- PL/25/4525/SA
- Type
- Certificate of Lawful Use - Proposed
- Status
- Decided
- Decision
- Cert of Law PROPOSED-granted
- Received
- 10 Oct 2025
- Validated
- 10 Oct 2025
- Decided
- 4 Dec 2025
- Ward
- Terriers and Amersham Hill
- Parish
- High Wycombe Unparished Area
- Decision by
- Delegated Decision
- Postcode
- HP13 5NX
Timeline
Dates from the published record
-
10 Oct 2025
Received by Buckinghamshire
-
4 Dec 2025
Decision issued: Cert of Law PROPOSED-granted
-
10 Aug 2026
Added to PlanIndex
Who's behind it
Company information only, from the register and Companies House
Agent on file, a planning consultancy
30 applications on PlanIndex · across 6 councils · 70% granted
Trade members see who it is, their full track record, and every application they have filed.
See who's behind itDocuments
Plans, drawings, consultee responses and the officer's report
21 documents on file for this application
A planning file usually holds the application form, drawings and site plans, consultee responses, the officer's report and the decision notice.
Trade members open them from here.
Open the documentsWhat a grant of permission means
The process from here
Permission has been granted, usually subject to conditions listed on the decision notice, some of which must be discharged before work starts. The decision notice on the council portal sets out exactly what was approved.
Work must normally begin within three years of the decision or the permission lapses. Neighbours cannot appeal a grant; challenging one means judicial review of how the decision was made, within tight time limits.
About lawful development applications
How this application type works
A lawful development certificate is a legal determination, not a planning judgement. It asks the council to confirm either that existing use or works are lawful, often through the passage of time, or that a proposal would not need planning permission at all. The applicant must prove the facts; the merits of the scheme are not considered.
Nearby applications
Within 500 metres
-
21 Coningsby Road High Wycombe Buckinghamshire HP13 5NX
Certificate of Lawfulness for proposed change of use from dwelling house (Use Class C3) to a small house in multiple occupation (Use Class C4). Construction of rear dormer window and hip to gable works (Class B), single storey ground floor rear extension (Class A), and conversion under Class L of Part 3 of Schedule 2 of the GPDO to a small House in Multiple Occupation (Class C4)
Refused Lawful development Extension Loft or dormer +1 23 docsSmall domestic -
20 Coningsby Road High Wycombe Buckinghamshire HP13 5NX
Crown reduce by 3.5 metres in order to maintain the health of the tree and to ensure it remains well balanced and attractive x 1 Copper Beech (T1)
Granted Trees 4 docs -
186 Hughenden Road High Wycombe Buckinghamshire HP13 5PD
Certificate of Lawfulness for Proposed C4 HMO for up to 6-occupants, Addition of dormer to rear of the property
Granted Lawful development Loft or dormer 10 docs -
111 Hughenden Road High Wycombe Buckinghamshire HP13 5HT
Notification under The Town and Country Planning (General Permitted Development) Order 2015, Part 1 of Schedule 2 Class A for: single storey rear extension (depth extending from the original rear wall of 6.00 metres, maximum height 3.00 metres, eaves height 2.65 metres)
Refused Extension 11 docsSmall domestic -
125 Hughenden Road High Wycombe Buckinghamshire HP13 5HT
80% historically approved · decision due ~30 Oct
Notification under The Town and Country Planning (General Permitted Development) Order 2015, Part 1 of Schedule 2 Class A for: single storey rear extension (depth extending from the original rear wall of 5.00 metres, maximum height 4.00 metres, eaves height 2.70 metres)
Awaiting decision ExtensionSmall domestic -
125A Hughenden Road High Wycombe Buckinghamshire HP13 5HT
80% historically approved · decision due ~20 Oct
Two sections of dropped kerb to rear of 125A Hughenden Road
Awaiting decision 5 docs
Other lawful development applications
In Buckinghamshire
-
PL/26/05794/SA Awaiting decision
62 Cubb Field Aylesbury Buckinghamshire HP19 7SH
Certificate of lawfulness for proposed dropped kerb
-
PL/26/01164/SA Refused
64 Sandholme Steeple Claydon Buckinghamshire MK18 2QE
Certificate of lawfulness for proposed dropped kerb.
-
PL/26/01589/SA Refused
3 Corn Mill Close Wing Buckinghamshire LU7 0PL
Certificate of lawfulness for the proposed single storey rear extension and part garage conversion.
-
PL/26/05893/SA Awaiting decision
Stamford House Boston Drive Bourne End Buckinghamshire SL8 5YS
Certificate of Lawfulness for proposed development to confirm the lawfulness of the construction of first floor rear extension, creating additional open plan offices.
-
PL/26/01721/SA Granted
Burton House White Lion Road Little Chalfont Buckinghamshire HP7 9LP
Certificate of lawfulness for the proposed change of use of building from Existing Office Building (Class E) to Veterinary Practice (Class E).