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Planning application

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

Granted North Hertfordshire 26/00392/FP Full Planning Permission

Works: New dwelling Demolition 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 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.

As published by the council, reference 26/00392/FP

Application record

Reference
26/00392/FP
Type
Full Planning Permission
Status
Decided
Decision
Granted As published: Conditional Permission
Received
27 Feb 2026
Validated
27 Feb 2026
Decided
22 Apr 2026
Ward
Knebworth Ward
Parish
Knebworth Parish Council
Decision by
Delegated
Postcode
SG3 6PP

Site history

Applications at this address on the North Hertfordshire register

This site has had 2 applications since 2024: 2 approved, 0 refused.

  • 24/01662/LDCE Granted

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

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

    Decided 4 Sep 2024 Lawful development

Timeline

Dates from the published record

  1. 27 Feb 2026

    Received by North Hertfordshire

  2. 22 Apr 2026

    Decision issued: Conditional Permission

  3. 9 Aug 2026

    Added to PlanIndex

Who's behind it

Company information only, from the register and Companies House

DLA Town Planning Ltd Agent, a planning consultancy registered in St Albans

Active · incorporated 2003 · St Albans

141 applications on PlanIndex · across 22 councils · 81% granted

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Documents

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

22 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

North Hertfordshire granted permission on 22 April 2026, 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 full applications

A full application seeks permission for a complete, detailed proposal in one go, with siting, design, access and landscaping all fixed at this stage. More in our guide to planning application types.

Nearby applications

Within 0.3 miles

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

    24/02400/LDCP Submitted 24 Oct 2024 50 yards away

    Erection of single storey side and rear extension

    Granted Lawful development Extension 10 docs
    Small domestic
  • The Cottage 73 Park Lane Old Knebworth Hertfordshire SG3 6PP

    24/02401/LDCP Submitted 24 Oct 2024 50 yards 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 50 yards 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

    24/01662/LDCE Submitted 26 Jul 2024 50 yards away

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

    Granted Lawful development 29 docs
  • Land Adjacent To 67 Park Lane Knebworth Hertfordshire SG3 6PW

    26/02035/FP Submitted 13 Aug 2026 200 yards away

    81% historically approved · decision due ~8 Oct

    Erection of building for church hall use including car parking, hard and soft landscaping, bin store and air source heat pump enclosure on south-west elevation. Alterations to existing vehicular access.

    Awaiting decision Full applications 12 docs
  • 66 Park Lane Knebworth Hertfordshire SG3 6PW

    26/01985/S73 Submitted 27 Aug 2026 200 yards away

    91% 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 Amendments 10 docs
    Several homes

In North Hertfordshire

  • 26/00298/FP Decided

    Hobbs Close Garage London Road St Ippolyts Hitchin Hertfordshire SG4 7NJ

    Erection of one detached 4-bed dwelling following demolition of existing garage building as revision of previously approved planning permission 21/00298/FP granted 26.03.2021.

    Received 19 Mar, published by the council 20 Oct 2026 Full applications
  • 26/01022/FP Awaiting decision

    Service Station Bedford Road Hitchin Hertfordshire SG5 2UG

    Installation of parcel lockers following removal of existing locker and installation of paved pathway.

    Received 19 Oct, published by the council 24 Jul 2026 Full applications
  • 26/02400/FP Awaiting decision

    Greenbanks London Road St Ippolyts Hitchin Hertfordshire SG4 7NJ

    Erection of four dwellings including cycle storage, parking, hard and soft landscaping, and alterations to access layout following demolition of existing dwelling and other buildings.

    Received 16 Oct, published by the council 20 Oct 2026 Full applications
  • 26/02392/FP Awaiting decision

    Land South Of 14 High Street Graveley Hertfordshire SG4 7LB

    Erection of one detached self-build dwelling including parking, cycle store, bin store, Air Source Heat Pump, alterations to ground levels and soft and hard landscaping.

    Received 16 Oct, published by the council 19 Oct 2026 Full applications
  • 26/01937/FP Decided

    Hitchin Town Hall Brand Street Hitchin Hertfordshire SG5 1HX

    Decarbonisation works including provision of secondary glazing to existing windows, the provision of insulation to the roof void above the main hall, replacement of mechanical plant including the removal of gas boilers and the installation of Photovoltaic (PV) panels and Air Source Heat Pump (ASHP)

    Received 18 Aug, published by the council 28 Aug 2026 Full applications