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Planning application

79 Coningsby Road High Wycombe Buckinghamshire HP13 5NZ

Granted Buckinghamshire PL/25/3963/SA Certificate of Lawful Use - Proposed

Works: Extension Loft or dormer

Permission granted. Work must normally begin within three years of the decision or the permission lapses.

Proposal

Certificate of Lawfulness for proposed roof dormer extension

As published by the council, reference PL/25/3963/SA

Application record

Reference
PL/25/3963/SA
Type
Certificate of Lawful Use - Proposed
Status
Decided
Decision
Granted As published: Cert of Law PROPOSED-granted
Received
23 Sep 2025
Validated
23 Sep 2025
Decided
19 Nov 2025
Ward
Terriers and Amersham Hill
Parish
High Wycombe Unparished Area
Decision by
Delegated Decision
Postcode
HP13 5NZ

Site history

Applications at this address on the Buckinghamshire register

This site has had 2 applications since 2025: 2 approved, 0 refused.

  • PL/26/00657/FA Granted

    79 Coningsby Road High Wycombe Buckinghamshire HP13 5NZ

    Demolition of existing conservatory and erection of single storey side and rear extensions

    Decided 1 Apr 2026 Full applications

Timeline

Dates from the published record

  1. 23 Sep 2025

    Received by Buckinghamshire

  2. 19 Nov 2025

    Decision issued: Cert of Law PROPOSED-granted

  3. 10 Aug 2026

    Added to PlanIndex

Who's behind it

Company information only, from the register and Companies House

Retsof Design Agent, a design practice registered in Aylesbury

Active · incorporated 2020 · Aylesbury

28 applications on PlanIndex · across 4 councils · 96% 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 record

Documents

Plans, drawings, consultee responses and the officer's report

6 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.

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What this grant of permission means

Buckinghamshire granted permission on 19 November 2025, subject to any conditions on the decision notice. Work must normally begin within three years or the permission lapses. More in our guide to what happens after a planning decision.

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 0.3 miles

  • 79 Coningsby Road High Wycombe Buckinghamshire HP13 5NZ

    PL/26/00657/FA Submitted 27 Jan 2026 50 yards away

    Demolition of existing conservatory and erection of single storey side and rear extensions

    Granted Full applications Extension Demolition 9 docs
    Small domestic

  • 216 Hughenden Road High Wycombe Buckinghamshire HP13 5PD

    PL/26/06129/SA Submitted 30 Jul 2026 50 yards away

    85% historically approved · decision due ~24 Sep

    Certificate of lawfulness for proposed change of use of C3 residential dwelling to C4 house of multiple occupancy (HMO) under Class L(b) and loft conversion with addition of dormer under Class B.

    Decided Loft or dormer
    Domestic

  • 186 Hughenden Road High Wycombe Buckinghamshire HP13 5PD

    PL/26/07375/FA Submitted 14 Sep 2026 50 yards away

    85% historically approved · decision due ~9 Nov

    Change of use from a C4 dwellinghouse to a large house in multiple occupation (Sui Generis) through the provision of one extra bedroom.

    Awaiting decision
    Domestic

  • 59 Coningsby Road High Wycombe Buckinghamshire HP13 5NY

    PL/26/05135/SA Submitted 23 Jun 2026 100 yards away

    85% historically approved · decision due ~18 Aug

    Certificate of Lawfulness for proposed change of use of C3 residential dwelling to C4 house of multiple occupancy (HMO) under Class L(b) and loft conversion with addition of dormer under Class B

    Decided Loft or dormer
    Domestic

  • 59 Coningsby Road High Wycombe Buckinghamshire HP13 5NY

    PL/26/05136/SA Submitted 23 Jun 2026 100 yards away

    85% historically approved · decision due ~18 Aug

    Certificate of lawfulness for proposed single storey rear extension

    Awaiting decision Extension
    Small domestic

  • 59 Coningsby Road High Wycombe Buckinghamshire HP13 5NY

    PL/26/07043/SA Submitted 2 Sep 2026 100 yards away

    85% historically approved · decision due ~28 Oct

    Certificate of lawfulness for proposed single storey rear extension.

    Decided Extension
    Small domestic

In Buckinghamshire

  • PL/26/01937/SA Granted

    63 Ingram Avenue Aylesbury Buckinghamshire HP21 9DJ

    Certificate of lawfulness for proposed dropped kerb.

    Received 18 Mar, published by the council 17 Sep 2026 Lawful development
  • PL/26/02452/SA Granted

    217A Desborough Avenue High Wycombe Buckinghamshire HP11 2TW

    Certificate of lawfulness for the proposed erection of an outbuilding.

    Received 25 Mar, published by the council 25 Sep 2026 Lawful development
  • PL/26/00836/SA Granted

    33 South View Downley Buckinghamshire HP13 5UL

    Certificate of lawfulness for the proposal to create new access at the front of the property.

    Received 2 Feb, published by the council 4 Aug 2026 Lawful development
  • PL/26/07553/SA Awaiting decision

    4 Marlborough Road Aylesbury Buckinghamshire HP21 8AU

    Certificate of Lawfulness for proposed new vehicular crossover (dropped kerb) to 4.6m total width including transition kerbs, with associated enlargement of the opening in the front boundary wall, and formation of a permeable hardstanding within the front garden to provide off-street parking for the existing dwellinghouse. Works are engineering/building operations as defined by s55 TCPA 1990. No change of use is proposed; the dwelling remains in Use Class C3. Existing drop kerb reinstated.

    Received 18 Sep, published by the council 3 Oct 2026 Lawful development
  • PL/26/07397/EU Awaiting decision

    22 Priory Road High Wycombe Buckinghamshire HP13 6SL

    Certificate of lawfulness for existing use of property as a block of eight self-contained flats, each falling within use class C3.

    Received 14 Sep, published by the council 3 Oct 2026 Lawful development