31 New Road Knebworth SG3 6LA

1. 29 Jun 2021

   Received by Welwyn Hatfield

2. 15 Jul 2021

   Validated

   Checked as complete and ready for consideration.

3. 27 Sep 2021

   Decision issued: Granted

4. 22 Sep 2026

   Added to PlanIndex

Welwyn Hatfield granted permission on 27 September 2021, 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.

Householder applications cover work to an existing house and its garden, such as extensions, lofts and outbuildings, and cannot create a separate dwelling or change what the building is used for. More in our guide to planning application types.

• 26 New Road Knebworth SG3 6JX

  6/2023/0203/HOUSE Submitted 27 Jan 2023 100 yards away

  Erection of ground floor infill extension and modifications to existing rear extension

  Granted Householder Extension
  Domestic

• Land Off London Road Woolmer Green Knebworth Hertfordshire SG3 6JZ

  25/01841/ADJ Submitted 21 Jul 2025 100 yards away

  92% historically approved · decision due ~15 Sep

  Approval of reserved matters (layout, scale, appearance and landscaping) for residential development pursuant to condition 1 (reserved matters), condition 2 (submission of reserved matters), condition 3 (reserved matters layout), condition 4 (landscaped buffer), condition 6 (detailed engineering details), condition 9 (Biodiversity), condition 10 (Health Impact Assessment), condition 11 (written scheme of investigation), condition 13 (surface water) and condition 25 (noise assessment) of outline planning permission (ref: 6/2023/2552/OUTLINE) comprising 150 dwellings, public open space, car parking ,and associated infrastructure works. NORTH HERTS DISTRICT COUNCIL : ADJACENT AUTHORITY : CONSULTEE ONLY

  Awaiting decision Outline New dwelling 2 docs
  Major scheme

• Land Off London Road Woolmer Green Knebworth Hertfordshire SG3 6JZ

  25/01358/ADJ Submitted 21 May 2025 100 yards away

  92% historically approved · decision due ~16 Jul

  Outline planning application for the erection of up to 150 residential dwellings with the provision of affordable housing, public open space, landscaping, sustainable drainage system (SuDS) and vehicular access point. All matters reserved except for means of access. NORTH HERTS DISTRICT COUNCIL: ADJACENT AUTHORITY : CONSULTEE ONLY.

  Awaiting decision Outline 1 doc

• 55 Garden Road Woolmer Green SG3 6JZ

  6/2026/1038/HOUSE Submitted 15 Jun 2026 150 yards away

  Erection of a part two/single storey side and rear extension and new front porch following the demolition of existing single storey side extension and porch

  Granted Householder Extension Demolition
  Small domestic

• 50 Carvers Croft Woolmer Green Hertfordshire SG3 6LX

  6/2023/0296/LAWP Submitted 7 Feb 2023 150 yards away

  Certificate of lawfulness for the erection of a single storey rear extension

  Granted Lawful development Extension
  Small domestic

• 59 Garden Road Knebworth Woolmer Green SG3 6JZ

  6/2021/2459/LAWP Submitted 23 Aug 2021 150 yards away

  Certificate of lawfulness for the erection of side porch following the demolition of existing porch

  Granted Lawful development Extension Demolition
  Small domestic

• 6/2026/1316/HOUSE Granted

  178 Knella Road Welwyn Garden City AL7 3NN

  Erection of part single and part two storey rear extension with alterations to openings on rear elevation

  Received 27 Jul, published by the council 22 Aug 2026 Householder
• 6/2026/1252/HOUSE Granted

  31 Brockswood Lane Welwyn Garden City AL8 7BE

  Erection of part single storey part two storey rear extension, garage conversion and installation of air conditioning unit mounted at ground floor on the rear elevation

  Received 16 Jul, published by the council 9 Aug 2026 Householder
• 6/2026/0112/HOUSE Granted

  54 Tolmers Road Cuffley Potters Bar EN6 4JF

  Erection of part two storey and part single storey front and side extensions. Erection of first floor rear extension. Alterations to the roof, including front and rear dormers and rooflights

  Received 26 Jan, published by the council 24 Jul 2026 Householder
• 6/2026/1620/HOUSE Awaiting decision

  68 Tolmers Road Cuffley Potters Bar EN6 4JY

  Erection of front boundary dwarf wall, railings and gated entrances and battened fencing to left and right boundaries to front garden alongside hardstanding to frontage

  Received 17 Sep, published by the council 22 Sep 2026 Householder
• 6/2026/1308/HOUSE Granted

  122 The Commons Welwyn Garden City AL7 4SB

  Proposed conversion of existing garage to habitable room alterations to the roof, erection of a glazed veranda and detached gazebo

  Received 27 Jul, published by the council 9 Aug 2026 Householder