21 Copperfields High Wycombe Buckinghamshire HP12 4AN

1. 27 Jan 2026

   Received by Buckinghamshire

2. 7 Apr 2026

   Decision issued: Cert of Law PROPOSED-refused

3. 4 Aug 2026

   Added to PlanIndex

Buckinghamshire refused this application for the reasons on the decision notice; only the applicant can appeal, and refused schemes often return in revised form. More in our guide to what happens after a planning decision.

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.

• 22 Copperfields High Wycombe Buckinghamshire HP12 4AN

  PL/26/06431/FA Submitted 10 Aug 2026 50 yards away

  86% historically approved · decision due ~5 Oct

  Erection of rear outbuilding.

  Awaiting decision

• Glendene Park Farm Road High Wycombe Buckinghamshire HP12 4AF

  25/06693/FUL Submitted 18 Jul 2025 250 yards away

  Householder application for amendment to previous approval Ref: 24/06588/FUL - two storey rear extension and first floor front extension. Amendments include 300mm rise in eaves height on main house, raising of extension roof at rear to match main dwelling. Side roof lights in loft area to form habitable space. Alterations to roof and eaves will increase main roof height by 450mm

  Granted Full applications Extension Loft or dormer 17 docs
  Domestic

• Glendene Park Farm Road High Wycombe Buckinghamshire HP12 4AF

  PL/26/01692/FA Submitted 2 Mar 2026 250 yards away

  First floor front extension and part-single/part-two storey rear extension incorporating alterations to roof including increase in eaves and ridge height and side and rear rooflights to form habitable accommodation within roofspace together with the relocation of an existing detached garage/store and construction of a detached ancillary outbuilding incorporating glass verandah (amendment to planning permission ref: 25/06693/FUL).

  Granted Full applications Extension Loft or dormer +1 20 docs

• Glendene Park Farm Road High Wycombe Buckinghamshire HP12 4AF

  PL/25/5148/SA Submitted 5 Nov 2025 250 yards away

  Certificate of Lawfulness for Proposed rear outbuilding to provide ancillary living space for a family member.

  Refused Lawful development 9 docs

• 7 Pheasant Drive High Wycombe Buckinghamshire HP13 5JH

  PL/25/6290/FA Submitted 10 Dec 2025 0.3 miles away

  Construction of single storey side and rear extension, raising of roof height, conversion of garage to form habitable room, creation of additional parking space and associated fenestration changes (amendment to planning permisson ref: 24/06584/FUL) (retrospective). The principal change relates to the overall height of the main roof. When the existing roof was removed, it became apparent that some sections had no insulation at all. To comply with current Building Regulations for a warm deck roof, a minimum insulation thickness of 150 mm was required, which in turn necessitated raising the supporting walls. Proper insulation was also essential to ensure the effective and efficient operation of the newly installed heat pump system, which relies on a well-insulated building envelope to perform as intended. Given the substantial footprint of the flat roof, it was also essential to adjust the roof falls and upstand heights to manage rainwater effectively. These changes were made to prevent any risk of water overspilling onto neighbouring properties and to ensure that surface water is directed properly to the soak-aways at the front and rear of the dwelling. In addition, care was taken to align the size and profile of the fascia with those of neighbouring properties so that the building sits more comfortably within the existing street scene. The property is a single-storey bungalow located on a sloping site that is already lower than the public highway. As a result, the increased roof height does not appear overbearing or intrusive. The alteration primarily delivers improved thermal performance, supports the proper functioning of the heat pump system, and provides better rainwater management. It does not block light to neighbouring properties, nor does it cause any material harm to their outlook or to the character and appearance of the area.

  Granted Full applications Extension Windows or glazing 9 docs
  Small domestic

• 430 West Wycombe Road High Wycombe Buckinghamshire HP12 4AH

  PL/25/2690/FA Submitted 10 Nov 2025 0.3 miles away

  Single storey side extension

  Granted Full applications Extension 13 docs
  Small domestic

• PL/26/00530/SA Granted

  10 Green Street High Wycombe Buckinghamshire HP11 2RA

  Certificate of lawfulness for the proposed change of use of a dwelling for supported accommodation

  Received 22 Jan, published by the council 27 Jul 2026 Lawful development
• PL/26/05794/SA Awaiting decision

  62 Cubb Field Aylesbury Buckinghamshire HP19 7SH

  Certificate of lawfulness for proposed dropped kerb

  Received 10 Aug, published by the council 5 Sep 2026 Lawful development
• PL/26/00427/SA Granted

  2 The Firs Aylesbury Road Bierton Buckinghamshire HP22 5DX

  Certificate of lawfulness for proposed single storey outbuilding to rear garden

  Received 20 Jan, published by the council 27 Jul 2026 Lawful development
• PL/26/01164/SA Refused

  64 Sandholme Steeple Claydon Buckinghamshire MK18 2QE

  Certificate of lawfulness for proposed dropped kerb.

  Received 12 Feb, published by the council 4 Aug 2026 Lawful development
• 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.

  Received 25 Feb, published by the council 3 Aug 2026 Lawful development