Planning application
6 Kew Grove High Wycombe Buckinghamshire HP11 1QJ
Works: Extension Loft or dormer Windows or glazing
Still open. Anyone can comment while the consultation period runs, and comments go to the council rather than to us.
Proposal
Certificate of lawfulness for proposed extension with rear dormer window and insertion of roof window to front elevation
As published by the council, reference PL/26/00957/SA
Application record
- Reference
- PL/26/00957/SA
- Type
- Certificate of Lawful Use - Proposed
- Status
- Registered
- Received
- 6 Feb 2026
- Validated
- 6 Feb 2026
- Ward
- Abbey
- Parish
- High Wycombe Unparished Area
- Decision by
- Delegated Decision
- Postcode
- HP11 1QJ
Timeline
Dates from the published record
-
6 Feb 2026
Received by Buckinghamshire
-
4 Aug 2026
Added to PlanIndex
-
Decision
Awaiting decision
Decision expected by 3 April 2026, 8 weeks from validation under the statutory target for most applications. Extensions of time are common and are agreed case by case.
Buckinghamshire took a median of 58 days over the applications it decided in the last year.
Who's behind it
Company information only, from the register and Companies House
Tim Isaac Architectural Design Agent, an architecture practice
18 applications on PlanIndex · across 4 councils · 100% granted
Trade members see everything this firm has filed, how it was decided, and get an email the day it files again.
See their track recordDocuments
Plans, drawings, consultee responses and the officer's report
17 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 happens while it is decided
This application is with Buckinghamshire for determination, against a statutory target of eight weeks. Over the last year Buckinghamshire decided lawful development applications in a median of 56 days. More in our guide to how long planning decisions take.
About lawful development applications
A lawful development certificate is a legal determination that existing or proposed works do not need planning permission; the merits of the scheme are not considered. More in our guide to planning application types.
Nearby applications
Within 500 metres
-
56 Daws Hill Lane High Wycombe Buckinghamshire HP11 1PU
86% historically approved · decision due ~9 Nov
Householder application for the construction of two storey side extensions including conversion of existing garage into habitable space.
Awaiting decision ExtensionDomestic -
Longrove House Merlewood Close High Wycombe Buckinghamshire HP11 1QQ
T1 Cedar Side later reduction of the branch length by between 2 - 2.5 meters away from the properties west side and to just above the gables back to a suitable branch unions T2 crown lift from over the drive front area to allow 4 metres clearance T2 Silver Birch and T3 Silver Birch
Granted Trees 3 docs -
21 Sandford Gardens High Wycombe Buckinghamshire HP11 1QT
2 x Beech Trees, 1 x Sycamore Tree. Reduce crown by 4M. Remove branches stripped of bark. Raise canopy of all 3 trees by removing low level branches (those below 8M) (11/1976).
Granted Trees 7 docs -
Land Adjacent To 33 Knights Templar Way High Wycombe Buckinghamshire HP11 1PX
86% historically approved · decision due ~13 Nov
Felling of T1 (Larch) exhibiting significant vertical split along lower trunk compromising structural integrity and increasing risk of failure causing a safety hazard to the adjacent highway, footpath and house
Awaiting decision Trees -
School House St Michael's Catholic School Daws Hill Lane High Wycombe Buckinghamshire HP11 1PW
Application for approval of details subject to conditions 4 (CEMP), 10 (temporary replacement MUGA), 13 (AMS and TPP), 19 (HMMP), and 20 (CEMP: Biodiversity) of planning approval 25/06099/FUL.
Decided Conditions 16 docs -
School House St Michael's Catholic School Daws Hill Lane High Wycombe Buckinghamshire HP11 1PW
Application for approval of details subject to condition 3 (Construction Traffic Management Plan) of planning approval 25/06099/FUL.
Decided Conditions 3 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/26/01721/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).
-
PL/26/05825/SA Awaiting decision
93 Thornton Crescent Wendover Buckinghamshire HP22 6DQ
Certificate of lawfulness for proposed air conditioning unit to side of house