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Planning application

The Cottage 73 Park Lane Old Knebworth Hertfordshire SG3 6PP

Granted North Hertfordshire 24/02400/LDCP Lawful Development Certificate Proposed

Works: Extension Small domestic

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

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

Proposal

Erection of single storey side and rear extension

As published by the council, reference 24/02400/LDCP

Application record

Reference
24/02400/LDCP
Type
Lawful Development Certificate Proposed
Status
Decided
Decision
Granted
Received
24 Oct 2024
Validated
24 Oct 2024
Decided
26 Nov 2024
Ward
Knebworth Ward
Parish
Knebworth Parish Council
Decision by
Delegated
Postcode
SG3 6PP

Timeline

Dates from the published record

  1. 24 Oct 2024

    Received by North Hertfordshire

  2. 26 Nov 2024

    Decision issued: Granted

  3. 9 Aug 2026

    Added to PlanIndex

Documents

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

10 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.

Open the documents

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

  • The Cottage 73 Park Lane Old Knebworth Hertfordshire SG3 6PP

    24/02401/LDCP Submitted 24 Oct 2024 0m away

    Replace 3no garage doors with windows to facilitate conversion of existing detached garage into habitable accommodation

    Granted Lawful development Windows or glazing 10 docs

  • The Cottage 73 Park Lane Old Knebworth Hertfordshire SG3 6PP

    24/02399/PNAA Submitted 24 Oct 2024 6m away

    Enlargement of detached bungalow by the construction of an additional storey to result in an overall height of 6.45 metres.

    Granted Prior approval 11 docs

  • Annexe At Cuckoo Hall 73 Park Lane Old Knebworth Hertfordshire SG3 6PP

    26/00392/FP Submitted 27 Feb 2026 18m away

    Erection of one self-build dwelling including ancillary annexe following demolition of existing dwelling to including parking, hard and soft landscaping and installation of rear swimming pool.

    Decided Full applications New dwelling Demolition 22 docs
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  • Annexe At Cuckoo Hall 73 Park Lane Old Knebworth Hertfordshire SG3 6PP

    24/01662/LDCE Submitted 26 Jul 2024 70m away

    Certificate of Lawfulness for the existing use of the outbuilding as a self-contained residential unit

    Granted Lawful development 29 docs

  • 66 Park Lane Knebworth Hertfordshire SG3 6PW

    26/02012/DOC Submitted 10 Aug 2026 222m away

    99% historically approved · decision due ~5 Oct

    Details reserved by condition 7 (Archaeological Written Scheme of Investigation) of reserved matters application reference no 25/01658/RM granted 28.11.2025.

    Awaiting decision Conditions

  • 66 Park Lane Knebworth Hertfordshire SG3 6PW

    26/01985/S73 Submitted 27 Aug 2026 222m away

    90% historically approved · decision due ~22 Oct

    Variation of conditions 1 and 14 (Revised Plans-Ecological Enhancements) of Reserved Matters application reference 25/01658/RM granted 28.11.2025 for reserved matters (appearance, landscaping, layout, scale and internal access) for the erection of 9 dwellings with associated landscaping, parking and amenity space pursuant of outline permission 23/02946/OP granted 19.06.2025.

    Awaiting decision
    Several homes

In North Hertfordshire

  • 26/01469/LDCP Granted

    30 Pirton Road Hitchin Hertfordshire SG5 2BD

    Single storey rear extension. Extension to rear patio.

    5 Jun 2026 Lawful development
  • 26/01459/LDCP Granted

    80 Balmoral Road Hitchin Hertfordshire SG5 1XQ

    Single storey rear extension and insertion of three rooflights to existing rear element. Front porch extension.

    4 Jun 2026 Lawful development
  • 26/01426/LDCP Granted

    25 Balmoral Road Hitchin Hertfordshire SG5 1XG

    Insertion of rear box dormer and installation of 3 rooflights to front roof slope to facilitate conversion of loft space to habitable accommodation.

    2 Jun 2026 Lawful development
  • 26/01301/LDCP Granted

    47 Bingen Road Hitchin Hertfordshire SG5 2PR

    Single storey rear extension and alterations to existing fenestration.

    2 Jun 2026 Lawful development
  • 26/01247/LDCP Granted

    47 Bedford Road Hitchin Hertfordshire SG5 2TP

    Erection of single storey detached outbuilding.

    20 May 2026 Lawful development