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Planning application

3 Heatherdene Road High Wycombe Buckinghamshire HP10 9FQ

Granted Buckinghamshire PL/25/3517/SA Certificate of Lawful Use - Proposed

Works: Loft or dormer Windows or glazing

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

Proposal

Certificate of Lawfulness for proposed loft conversion including a new rear dormer and 2no. roof windows on the front elevation

As published by the council, reference PL/25/3517/SA

Application record

Reference
PL/25/3517/SA
Type
Certificate of Lawful Use - Proposed
Status
Decided
Decision
Cert of Law PROPOSED-granted
Received
8 Sep 2025
Validated
8 Sep 2025
Decided
18 Dec 2025
Ward
Abbey
Parish
High Wycombe Unparished Area
Decision by
Delegated Decision
Postcode
HP10 9FQ

Timeline

Dates from the published record

  1. 8 Sep 2025

    Received by Buckinghamshire

  2. 18 Dec 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

Agent on file, an architecture practice

2 applications on PlanIndex · across 2 councils

Trade members see who it is, their full track record, and every application they have filed.

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Documents

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

5 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.

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What a grant of permission means

The process from here

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.

About lawful development applications

How this application type works

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

Nearby applications

Within 500 metres

  • 7 Heatherdene Road High Wycombe Buckinghamshire HP10 9FQ

    PL/25/5592/SA Submitted 13 Nov 2025 21m away

    Certificate of Lawfulness for proposed loft conversion with rear dormer

    Granted Lawful development Loft or dormer 9 docs

  • 1 Thornberry Gardens High Wycombe Buckinghamshire HP10 9FX

    PL/25/5809/FA Submitted 2 Feb 2026 32m away

    Erection of single storey rear extension

    Granted Full applications Extension 15 docs
    Small domestic

  • 1 Thornberry Gardens High Wycombe Buckinghamshire HP10 9FX

    PL/25/3611/PNE Submitted 12 Sep 2025 36m away

    The erection of a single storey rear extension, which would extend beyond the rear wall of the original house by 5.00m for which the maximum height would be 4m and for which the height of the eaves would be maximum 3m

    Refused Extension 15 docs
    Small domestic

  • Wycombe Summit Site Abbey Barn Lane High Wycombe Buckinghamshire

    PL/25/3460/NMA Submitted 4 Sep 2025 72m away

    Non material amendment to planning permission 23/07154/FUL (Erection of 50 dwellings with associated landscaping, parking and infrastructure)

    Withdrawn Amendments 24 docs
    Major scheme

  • Wycombe Summit Site Abbey Barn Lane High Wycombe Buckinghamshire

    PL/26/01475/NMA Submitted 23 Feb 2026 72m away

    80% historically approved · decision due ~20 Apr

    Non material amendment to planning permission 23/07154/FUL (Erection of 50 dwellings with associated landscaping, parking and infrastructure) Amendment to approved details of Site layout, Parking Strategy Plan, Garages, Plots 26, 27, 28, 29, 30, 31, 32-39, 40, 42-44, 45, 46, 47, 50, 51, 52, 53, 56 & 57

    Awaiting decision Amendments 21 docs
    Major scheme

  • Abbey Barn South Reserve Site Abbey Barn Lane High Wycombe Buckinghamshire

    PL/25/3459/NMA Submitted 4 Sep 2025 76m away

    Non material amendment to planning permission 23/07153/REM (Submission of details of layout, scale, appearance and landscaping for phase 4 for the erection of 25 residential dwellings with associated parking, landscaping and access from Abbey Barn Lane pursuant to hybrid permission 18/05363/FUL

    Decided Amendments 36 docs

In Buckinghamshire

  • 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