17-17a Mill Lane Welwyn AL6 9EU

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

• 6/2026/1370/LAWP Granted

  17-17A Mill Lane Welwyn AL6 9EU

  Certificate of lawfulness for the change of use of offices to 3 x 2 bedroom flats

  Decided 10 Sep 2026 Lawful development

1. 11 Mar 2026

   Received by Welwyn Hatfield

2. 24 Jul 2026

   Added to PlanIndex

3. 30 Jul 2026

   Decision issued: Not Determined

Welwyn Hatfield has decided this application; the outcome above is the register's own wording and the decision notice on the council portal carries the detail. 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.

• 17-17A Mill Lane Welwyn AL6 9EU

  6/2026/1370/LAWP Submitted 3 Aug 2026 50 yards away

  Certificate of lawfulness for the change of use of offices to 3 x 2 bedroom flats

  Granted Lawful development New dwelling

• 23-25 Mill Lane Welwyn AL6 9EU

  6/2026/0263/COND Submitted 16 Feb 2026 50 yards away

  Submission of details pursuant to condition number 2 (Material details) on planning permission 6/2025/1211/LB

  Granted Conditions 1 doc

• 23-25 Mill Lane Welwyn AL6 9EU

  6/2026/0262/COND Submitted 16 Feb 2026 50 yards away

  Submission of details pursuant to condition number 5 (Material details) and 6 (Hard and soft landscaping) on planning permission 6/2025/1212/HOUSE

  Granted Conditions
  Major scheme

• 1 Mimram Walk Welwyn AL6 9EZ

  6/2022/2721/TC Submitted 1 Dec 2022 50 yards away

  Weeping Beech in rear garden to south of property. 30% Crown reduction to balance

  Granted Trees

• The White Horse 30 Mill Lane Welwyn AL6 9ET

  6/2024/1409/FULL Submitted 24 Jul 2024 50 yards away

  Retrospective application for the erection of 4no. timber framed garden pods with polycarbonate roof to the rear garden, use of part of the existing rear storage outbuilding to garden bar servery, retention of the existing stretched tent located to the rear of the premises

  Granted Full applications

• 5 Mill Lane Welwyn AL6 9EY

  6/2024/2050/TC Submitted 23 Oct 2024 50 yards away

  Remove 1 x Beech tree

  Granted Trees

• 6/2026/1385/PN14 Granted

  Car Park at Bishops Square Hatfield Business Park Hatfield AL10 9NE

  Prior approval for demolition of existing carpark building

  Received 5 Aug, published by the council 31 Aug 2026 Prior approval
• 6/2026/1125/PN8 Granted

  39 The Ridgeway Northaw EN6 4BD

  Prior approval for the erection of a single storey rear extensions measuring 8m in depth, 4m in height and 3m to the eaves

  Received 29 Jun, published by the council 24 Jul 2026 Prior approval
• 6/2026/1494/PN8 Awaiting decision

  6 West View Hatfield AL10 0PJ

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

  Received 25 Aug, published by the council 13 Sep 2026 Prior approval
• 6/2026/1217/PN8 Refused

  48 Great Ganett Welwyn Garden City AL7 3DE

  Prior approval for a single storey rear extension measuring 4m in depth, 3m to the eaves and the maximum height of 3m

  Received 13 Jul, published by the council 24 Jul 2026 Prior approval
• 6/2026/1411/PN15 Awaiting decision

  Grass verge along Bessemer Road Bessemer Road Welwyn Garden City AL7 1ET

  Prior approval for the installation of 20m high Taurus Street pole with 9no antennas, 6no RRH and equipment housing, together with associated ancillary development

  Received 10 Aug, published by the council 31 Aug 2026 Prior approval