11 Oak Tree Gardens Knebworth Hertfordshire SG3 6EQ

1. 16 Aug 2024

   Received by North Hertfordshire

2. 1 Oct 2024

   Decision issued: Granted

3. 9 Aug 2026

   Added to PlanIndex

North Hertfordshire granted permission on 1 October 2024, 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.

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.

• 27 Lytton Fields Knebworth Hertfordshire SG3 6BA

  26/01625/FPH Submitted 3 Aug 2026 50 yards away

  Enlargement of existing front dormer windows and insertion of 2 no. front rooflights. Insertion of rear box dormer with 2 no. Juliette balconies. Replacement flat roof above existing rear element and demolition of existing conservatory. Front porch extension and alterations to fenestration.

  Decided Extension Loft or dormer +2
  Small domestic

• 27 Lytton Fields Knebworth Hertfordshire SG3 6BA

  26/01483/NMA Submitted 8 Jun 2026 50 yards away

  No raising of roof required, flat roof dormers (as existing design), Juliette balconies to rear dormer, extension of porch roof and no single storey rear extension as non-material amendment to planning permission reference 25/03244/FPH granted on 12.02.2026).

  Refused Amendments Extension Loft or dormer
  Small domestic

• 31 Lytton Fields Knebworth Hertfordshire SG3 6BA

  24/02393/FPH Submitted 30 Oct 2024 50 yards away

  Two storey rear extension. Alterations to fenestrations including installation of first floor window on side elevation and repositioning of rear dormer window. The addition of 3 pitched roofs above the existing 3 front dormer windows.

  Granted Householder Extension Loft or dormer +1 8 docs
  Domestic

• 2 Oak Tree Gardens Knebworth Hertfordshire SG3 6EQ

  22/03025/FPH Submitted 23 Nov 2022 50 yards away

  Part conversion of garage to provide home office including replacement door opening on side elevation

  Granted Householder 11 docs
  Domestic

• Caxton Villa 14 Park Lane Knebworth Hertfordshire SG3 6PF

  23/00009/FPH Submitted 6 Jan 2023 150 yards away

  Installation of additional vehicular crossover.

  Granted Householder 8 docs
  Domestic

• 25 Deards Wood Knebworth Hertfordshire SG3 6PG

  22/03259/FPH Submitted 22 Dec 2022 150 yards away

  Two storey side and rear extension, raise existing roof ridge height, replace existing windows and replace existing dormer windows following demolition of existing conservatory. Extend the existing driveway within the boundary and creation of vehicular crossover (as variation of previously approved Planning Permission 21/02945/FPH granted 26.01.2022)

  Granted Householder Extension Loft or dormer +3 14 docs
  Small domestic

• 26/01469/LDCP Granted

  30 Pirton Road Hitchin Hertfordshire SG5 2BD

  Single storey rear extension. Extension to rear patio.

  Received 5 Jun, published by the council 24 Jul 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.

  Received 4 Jun, published by the council 24 Jul 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.

  Received 2 Jun, published by the council 24 Jul 2026 Lawful development
• 26/01301/LDCP Granted

  47 Bingen Road Hitchin Hertfordshire SG5 2PR

  Single storey rear extension and alterations to existing fenestration.

  Received 2 Jun, published by the council 24 Jul 2026 Lawful development
• 26/01247/LDCP Granted

  47 Bedford Road Hitchin Hertfordshire SG5 2TP

  Erection of single storey detached outbuilding.

  Received 20 May, published by the council 24 Jul 2026 Lawful development