12 Sycamore Avenue AL10 8LZ

1. 26 Nov 2024

   Received by Welwyn Hatfield

2. 28 Nov 2024

   Validated

   Checked as complete and ready for consideration.

3. 2 Jan 2025

   Decision issued: Prior Approval Not Required

4. 14 Sep 2026

   Added to PlanIndex

Welwyn Hatfield granted permission on 2 January 2025, 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.

Prior approval applies where permitted development rights already grant the principle of the work, leaving the council only the specific matters the rules name, commonly within 56 days. More in our guide to planning application types.

• 12 Sycamore Avenue Hatfield AL10 8LZ

  6/2024/2005/PN8 Submitted 18 Oct 2024 50 yards away

  Prior approval for the erection of a single storey rear extension measuring 5.9m in depth, 3m in height and 2.6m to the eaves

  Refused Prior approval Extension
  Small domestic

• 12 Sycamore Avenue Hatfield AL10 8LZ

  6/2024/1548/HOUSE Submitted 14 Aug 2024 50 yards away

  Erection of part single, part two storey rear extension

  Refused Householder Extension
  Domestic

• 18 Sycamore Avenue Hatfield Hertfordshire AL10 8LZ

  6/2022/2646/LAWP Submitted 21 Nov 2022 50 yards away

  Certificate of lawfulness for single storey side extension, replacement of porch roof, alterations to existing openings and insertion of one front roof light

  Granted Lawful development Extension Loft or dormer +1
  Small domestic

• 2 Sycamore Avenue Hatfield AL10 8LZ

  6/2026/1160/HOUSE Submitted 3 Jul 2026 100 yards away

  Raising the roof height and converting the garage into habitable use, installation of a pergola to the rear elevation of the dwelling and alteration to fenestration.

  Granted Householder Windows or glazing
  Domestic

• 17 Sycamore Avenue Hatfield AL10 8LZ

  6/2026/1031/HOUSE Submitted 12 Jun 2026 100 yards away

  Erection of a part single storey, part two-storey rear extension, garage conversion, front porch extension, alterations to fenestration and external materials

  Withdrawn Householder Extension Windows or glazing
  Small domestic

• 96 Briars Lane Hatfield AL10 8EY

  6/2021/1146/HOUSE Submitted 8 Apr 2021 100 yards away

  Single storey front extension and alterations to fenestration on existing first floor front elevation

  Granted Householder Extension Windows or glazing
  Small domestic

• 6/2026/1265/PN8 Granted

  1 Newstead Hatfield AL10 9DH

  Prior approval for a single storey rear extension measuring 6.00m in depth, 2.60m to the eaves and the maximum height of 3.00m

  Received 20 Jul, published by the council 1 Aug 2026 Prior approval
• 6/2026/1086/PN24 Refused

  The Hub Tamblin Way Hatfield AL10 9EZ

  Prior approval for installation of a roof-mounted solar PV system, comprising of 212 Solarwatt panels to a total system size of 95.4 kWp

  Received 23 Jun, published by the council 2 Aug 2026 Prior approval
• 6/2026/1686/PN8 Awaiting decision

  65 Maple Grove Welwyn Garden City AL7 1NN

  Prior approval for the erection of a single storey rear extension measuring 6m in depth, 3m in height and 2.75m to the eaves

  Received 23 Sep, published by the council 1 Oct 2026 Prior approval
• 6/2026/1399/PN8 Granted

  1 High Dells Hatfield AL10 9JD

  Prior approval for a single storey rear extension measuring 4.50m in depth, 2.58m to the eaves and the maximum height of 2.75m

  Received 7 Aug, published by the council 22 Aug 2026 Prior approval
• 6/2026/1335/PN8 Refused

  31 Kentish Lane Brookmans Park AL9 6NG

  Prior approval for 2x single storey rear extensions and 1x single storey side/rear extension measuring 8m in depth, 2.85m to the eaves and the maximum height of 4m

  Received 30 Jul, published by the council 22 Aug 2026 Prior approval