10 Chilterns Close Flackwell Heath Buckinghamshire HP10 9BB

1. 15 Aug 2025

   Received by Buckinghamshire

2. 14 Oct 2025

   Decision issued: Cert of Law PROPOSED-granted

3. 15 Aug 2026

   Added to PlanIndex

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.

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.

More on lawful development applications in our guide

• 33 Chapman Lane Flackwell Heath Buckinghamshire HP10 9BD

  PL/26/01772/FA Submitted 4 Mar 2026 72m away

  Single story rear and two story side extension

  Granted Full applications Extension 2 docs

• Outside 43, 49, 58 Chapman Lane and 21 The Orchand Flackwell Heath Buckinghamshire

  PL/26/00094/TELN Submitted 29 Dec 2025 141m away

  Notification under Regulation 5 of the electronic communications code (conditions and restrictions) Regulations 2003 (as amended) for the installation of 04 10M medium wooden poles

  Decided Telecoms 3 docs

• 14 The Orchard Flackwell Heath Buckinghamshire HP10 9PR

  PL/25/3905/FA Submitted 22 Sep 2025 166m away

  Proposed two storey side extension and single storey rear extension

  Refused Full applications Extension 8 docs
  Small domestic

• 23 Chapman Lane Flackwell Heath Buckinghamshire HP10 9AZ

  PL/26/06198/FA Submitted 3 Aug 2026 169m away

  80% historically approved · decision due ~28 Sep

  Garage conversion.

  Awaiting decision

• 16 Sedgmoor Road Flackwell Heath Buckinghamshire HP10 9AU

  PL/25/5191/FA Submitted 3 Nov 2025 172m away

  Erection of rear roof dormer extension

  Granted Full applications Extension Loft or dormer 18 docs

• 5 Sedgmoor Close Flackwell Heath Buckinghamshire HP10 9BH

  PL/25/6571/TP Submitted 18 Dec 2025 201m away

  Reduce crowns by removing up to 2 m apical and lateral growth for good maintenance and to contain trees at current size x 1 Oak (T1 & T2)

  Refused Trees 3 docs

• PL/26/05794/SA Awaiting decision

  62 Cubb Field Aylesbury Buckinghamshire HP19 7SH

  Certificate of lawfulness for proposed dropped kerb

  10 Aug 2026 Lawful development
• PL/26/01164/SA Refused

  64 Sandholme Steeple Claydon Buckinghamshire MK18 2QE

  Certificate of lawfulness for proposed dropped kerb.

  12 Feb 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.

  25 Feb 2026 Lawful development
• 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.

  22 Jul 2026 Lawful development
• 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).

  2 Mar 2026 Lawful development