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Planning application

PL/26/01347/SA

Lanivet Grove Lane Chalfont St Peter Buckinghamshire SL9 9LN

Granted Buckinghamshire Certificate of Lawful Use - Proposed

Proposal

Certificate of lawfulness for the proposed erection of a two storey rear extension.

As published by the council, reference PL/26/01347/SA

Timeline

Dates from the published record

  1. 18 Feb 2026

    Received by Buckinghamshire

  2. 17 Apr 2026

    Decision issued: Cert of Law PROPOSED-granted

  3. 4 Aug 2026

    Added to PlanIndex

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

  • Timbers Welders Lane Chalfont St Peter Buckinghamshire SL9 8TU

    Application for approval of details subject to conditions 4 (trees) and 7 (ecological enhancements) of planning approval PL/25/2564/VRC

    4 Feb 2026 181m away Conditions
  • PL/25/2250/SA Refused

    The Chalfonts Community College Narcot Lane Chalfont St Peter Buckinghamshire SL9 8TP

    Proposed certificate of lawfulness for alterations to boundary fence and an altered access point

    16 Jul 2025 211m away Lawful development
  • Cumnock Nicol Road Chalfont St Peter Buckinghamshire SL9 9LY

    Application for approval of details subject to conditions 2 (detailed plans including proposed slab), 3 (materials), 5 (habitat management and monitoring plan) and 6 (boundaries) of planning approval PL/25/2140/FA. Condition 2 - (MDL-1425-PL-1000 - Plots 1-4 Street Scene & Section A-A). Condition 3 - (MDL-1425 - Nicol Road, Chalfont St Peter - Materials Schedule). Condition 5 - (Biodiversity gain plan forms, HMMP 1.0 and Soft Landscaping Plan). Condition 6 - (MDL-1425-PL-1001 - Plots 1-4 Site Plan).

    18 Feb 2026 257m away Conditions
  • PL/25/6029/FA Awaiting decision

    Land at Old Jobs Narcot Lane Chalfont St Peter Buckinghamshire SL9 8TR

    Construction of 7 dwellings, with associated access, landscaping and open space

    28 Nov 2025 310m away Full applications
  • PL/25/6043/FA Granted

    4 Fairhaven Chalfont St Peter Buckinghamshire SL9 9JE

    Single storey rear extension

    1 Dec 2025 365m away Full applications
  • PL/25/6033/VRC Refused

    Harvest Cottage 89 Orchard Grove Chalfont St Peter Buckinghamshire SL9 9ET

    Variation of condition 7 (Approved Plans) attached to planning permission PL/21/4305/FA (Demolition of existing rear extension, erection of part two storey/part single storey rear extension, two storey side extension, hip to gable end side roof extension, 2 front and 3 rear rooflights, new front porch, extend existing rear gates, new rear vehicular access to Nicol Road) to allow for the staircase to be moved internally and the construction of a rear dormer as part of the roof extension.

    1 Dec 2025 484m away Conditions

In Buckinghamshire

  • 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/26/01721/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
  • PL/26/05515/SA Awaiting decision

    Dinton Hall Upton Road Dinton Buckinghamshire HP17 8UQ

    Certificate of lawfulness application for proposed crossover field access point.

    21 Jul 2026 Lawful development
  • PL/26/05843/SA Awaiting decision

    Land at Springfield Farm, South Heath, Buckinghamshire

    Certificate of Proposed Lawful Development for the temporary storage of soil stockpiles at Springfield Farm field at South Heath, Buckinghamshire

    21 Jul 2026 Lawful development