29 Heathcote Avenue Hatfield AL10 0RQ

1. 9 Apr 2026

   Received by Welwyn Hatfield

2. 18 May 2026

   Decision issued: Prior Approval Not Required

3. 9 Aug 2026

   Added to PlanIndex

Welwyn Hatfield granted permission on 18 May 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.

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.

• 92 Chelwood Avenue Hatfield AL10 0RE

  6/2021/1642/COND Submitted 23 May 2021 100 yards away

  Submission of details pursuant to condition 1 (materials) on planning permission 6/2021/0742/HOUSE

  Granted Conditions
  Major scheme

• 59 Chelwood Avenue Hatfield AL10 0RF

  6/2024/1307/HOUSE Submitted 9 Jul 2024 100 yards away

  Erection of a single storey rear extension, two-storey side extension and a loft conversion with rear dormer and insertion of front rooflights

  Refused Householder Extension Loft or dormer
  Small domestic

• 33 Birchwood Avenue Hatfield AL10 0PR

  6/2021/1839/LAWP Submitted 15 Jun 2021 100 yards away

  Certificate of lawfulness for a loft conversion with rear dormer

  Granted Lawful development Loft or dormer

• 65 Heathcote Avenue Hatfield AL10 0RQ

  6/2023/0410/HOUSE Submitted 22 Feb 2023 100 yards away

  Erection of single storey rear extension, front porch extension, installation of one front rooflight and a rear dormer to facilitate the conversion of loft to habitable space

  Refused Householder Extension Loft or dormer
  Small domestic

• 80 Birchwood Avenue Hatfield AL10 0PS

  6/2023/0458/HOUSE Submitted 28 Feb 2023 150 yards away

  Replacement of pitched polycarbonate conservatory roof with flat roof

  Granted Householder Extension
  Small domestic

• 82 Birchwood Avenue Hatfield AL10 0PS

  6/2026/0710/HOUSE Submitted 21 Apr 2026 150 yards away

  Erection of single storey rear extension

  Granted Householder Extension
  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