27 Lytton Fields Knebworth Hertfordshire SG3 6BA

This site has had 2 applications since 2026: 0 approved, 1 refused.

• 26/01625/FPH Decided

  27 Lytton Fields Knebworth Hertfordshire SG3 6BA

  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 4 Sep 2026

1. 8 Jun 2026

   Received by North Hertfordshire

2. 23 Jun 2026

   Decision issued: Refused

3. 24 Jul 2026

   Added to PlanIndex

• Application: 25/03244/FPH (Decided)

North Hertfordshire refused this application for the reasons on the decision notice; only the applicant can appeal, and refused schemes often return in revised form. More in our guide to what happens after a planning decision.

An amendment application makes limited changes to a permission that already exists; anything beyond modest adjustment needs a fresh application. 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

• 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

• 11 Oak Tree Gardens Knebworth Hertfordshire SG3 6EQ

  24/01834/LDCP Submitted 16 Aug 2024 50 yards away

  Erection of single storey rear conservatory

  Granted Lawful development Extension 7 docs
  Small domestic

• 2 Oak Tree Gardens Knebworth Hertfordshire SG3 6EQ

  22/03025/FPH Submitted 23 Nov 2022 100 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

• The Station Station Approach Knebworth Hertfordshire SG3 6AT

  21/02008/AD Submitted 6 Aug 2021 150 yards away

  Installation of stack board advertising new build properties for sale on development site.

  Granted Advertising New dwelling 7 docs

• 26/02255/NMA Decided

  Highover Farm Highover Way Hitchin Hertfordshire SG4 0RQ

  Revisions to approved plans relating to (i) northern loop road raised table location, (ii) revised details for sub-station, (iii) minor alteration to location of pumping station and associated landscaping (as Non-Material Amendment of planing permission 25/02794/RM granted 06.05.2026)

  Received 8 Sep, published by the council 10 Sep 2026 Amendments
• 26/02352/NMA Decided

  11 Kingswood Avenue Hitchin Hertfordshire SG4 0PA

  Minor alterations to the position, size and arrangement of window and door openings, including revisions to the front and side elevations, together with associated minor internal layout changes. The overall scale, footprint, height, roof form and general appearance of the approved dwelling remain unchanged (as non-material amendment to planning permission reference 26/00109/FP granted on appeal on 03.09.2026).

  5 Oct 2026 Amendments
• 26/02438/NMA Decided

  Starwood House Avenue One Letchworth Garden City Hertfordshire SG6 2HB

  Minor amendments (as non-material amendment to planning permission 25/01196/FP granted on 22.01.2026).

  Received 15 Oct, published by the council 19 Oct 2026 Amendments
• 26/02230/NMA Decided

  The Elms The Causeway Therfield Royston Hertfordshire SG8 9PP

  Installation of metal windows (as Non-Material Amendment to planning permission 24/00802/FPH granted 17.09.2024)

  Received 7 Sep, published by the council 9 Sep 2026 Amendments
• 26/02699/NMA Awaiting decision

  Land North Of Pound Farm London Road St Ippolyts Hertfordshire SG4 7NE

  Introduce a small step into each of the 3 terraces 52-55, 56-58 & 59-61 due to the transition in levels across the site (as Non-Material Amendment to reserved matters application 24/02907/RM granted 28.08.2025)

  Received 21 Oct, published by the council 5 Nov 2026 Amendments