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Planning application

21 Coningsby Road High Wycombe Buckinghamshire HP13 5NX

Refused Buckinghamshire PL/25/4524/SA Certificate of Lawful Use - Proposed

Works: Extension Loft or dormer Windows or glazing Small domestic

Read from the description, not a valuation. How we read the register

Refused. Only the applicant can appeal, within the statutory time limit, and a revised scheme can be submitted instead.

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), 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)

As published by the council, reference PL/25/4524/SA

Application record

Reference
PL/25/4524/SA
Type
Certificate of Lawful Use - Proposed
Status
Decided
Decision
Refused As published: Cert of Law PROPOSED-refused
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

Site history

Applications at this address on the Buckinghamshire register

This site has had 2 applications since 2025: 1 approved, 1 refused.

  • PL/25/4525/SA Granted

    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), and conversion under Class L of Part 3 of Schedule 2 of the GPDO to a small House in Multiple Occupation (Class C4)

    Decided 4 Dec 2025 Lawful development

Timeline

Dates from the published record

  1. 10 Oct 2025

    Received by Buckinghamshire

  2. 4 Dec 2025

    Decision issued: Cert of Law PROPOSED-refused

  3. 10 Aug 2026

    Added to PlanIndex

Who's behind it

Company information only, from the register and Companies House

DMH Planning Limited Agent, a planning consultancy

29 applications on PlanIndex · across 7 councils · 72% granted

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Documents

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

23 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 refusal means

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.

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

  • 21 Coningsby Road High Wycombe Buckinghamshire HP13 5NX

    PL/25/4525/SA Submitted 10 Oct 2025 50 yards away

    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)

    Granted Lawful development Loft or dormer Windows or glazing 21 docs
    Domestic

  • 20 Coningsby Road High Wycombe Buckinghamshire HP13 5NX

    PL/25/6806/TP Submitted 29 Dec 2025 50 yards away

    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

    PL/25/6055/SA Submitted 1 Dec 2025 150 yards away

    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

    PL/25/6374/PNE Submitted 12 Dec 2025 150 yards away

    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 docs
    Small domestic

  • 125 Hughenden Road High Wycombe Buckinghamshire HP13 5HT

    PL/26/07106/PNE Submitted 4 Sep 2026 150 yards away

    85% 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)

    Decided Extension
    Small domestic

  • Land Rear Of 125, 125A & 125B Hughenden Road High Wycombe Buckinghamshire HP13 5HT

    PL/26/07873/FA Submitted 13 Oct 2026 150 yards away

    85% historically approved · decision due ~8 Dec

    Change of use of the existing external yard to a hand car-wash premises together with the installation of an associated waiting area, store unit, and a wash area covered by canopies with boundary treatment and a dropped kerb (retrospective)

    Awaiting decision

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