16 Rosedale Welwyn Garden City AL7 1DR

1. 29 May 2026

   Received by Welwyn Hatfield

2. 10 Jun 2026

   Decision issued: Granted

3. 9 Aug 2026

   Added to PlanIndex

Permission has been granted, usually subject to conditions listed on the decision notice, some of which must be discharged before work starts. The decision notice on the council portal sets out exactly what was approved.

Work must normally begin within three years of the decision or the permission lapses. Neighbours cannot appeal a grant; challenging one means judicial review of how the decision was made, within tight time limits.

A lawful development certificate is a legal determination, not a planning judgement. It asks the council to confirm either that existing use or works are lawful, often through the passage of time, or that a proposal would not need planning permission at all. The applicant must prove the facts; the merits of the scheme are not considered.

More on lawful development applications in our guide

• 16 Rosedale Welwyn Garden City AL7 1DR

  6/2026/0564/EM Submitted 27 Mar 2026 0m away

  Part single storey and part two storey rear extension with replacement side window on the first floor and block up the existing ground-floor side window to the kitchen

  Granted Extension Windows or glazing
  Small domestic

• 16 Rosedale Welwyn Garden City AL7 1DR

  6/2026/0563/LAWP Submitted 27 Mar 2026 0m away

  Certificate of lawfulness for the erection of a part single-storey and part two-storey rear extension, replacement window to side elevation, and block up the existing kitchen ground-floor side window

  Refused Lawful development Extension Windows or glazing
  Small domestic

• 74 Rosedale Welwyn Garden City AL7 1DR

  6/2019/2814/EM Submitted 6 Nov 2019 33m away

  Erection of part single, part two storey side extension with alterations to openings to include relocation of entrance door and single storey extension to garage with the installation of new garage doors

  Refused Extension
  Small domestic

• 74 Rosedale Welwyn Garden City AL7 1DR

  6/2019/2716/HOUSE Submitted 29 Oct 2019 33m away

  Erection of part single, part two storey side extension with alterations to openings to include relocation of entrance door and single storey extension to garage with the installation of new garage doors

  Refused Householder Extension
  Small domestic

• 58 Rosedale Welwyn Garden City AL7 1DR

  6/2021/1764/EMT Submitted 4 Jun 2021 47m away

  1 x Lawson Cypress to fell 1 x Beech to reduce by 2m height & width

  Granted Trees

• 79 Rosedale Welwyn Garden City AL7 1DP

  6/2024/1799/EM Submitted 18 Sep 2024 62m away

  Erection of a single storey rear extension, new ground floor window (front) and extension of front footpath

  Granted Extension Windows or glazing
  Small domestic

• 6/2026/0735/LAWE Refused

  1 Northaw Place Coopers Lane Northaw Potters Bar EN6 4NQ

  Certificate of lawfulness for the existing use of the land as residential garden land ancillary to the dwellinghouse continuously since 2012

  27 Apr 2026 Lawful development
• 6/2026/1132/LAWE Refused

  19 Cunningham Avenue Hatfield AL10 9LR

  Certificate of existing lawfulness of a 5 person HMO since 6 April 2006

  30 Jun 2026 Lawful development
• 6/2026/1506/LAWP Awaiting decision

  Gosmore Brocket Road Welwyn Garden City AL8 7TT

  Erection of single storey side extensions x 2 and two storey rear extension

  27 Aug 2026 Lawful development
• 6/2026/1503/LAWE Awaiting decision

  27 Batterdale Hatfield AL9 5JG

  Certificate of lawfulness for the existing like-for-like replacement of damaged and aged windows on the front and rear elevations

  26 Aug 2026 Lawful development
• 6/2026/1044/LAWP Granted

  5 Peartree Court Welwyn Garden City AL7 3XN

  Certificate of lawfulness for the change of use from C3 (dwellinghouse) to C4 (HMO for up to 6 unrelated residents)

  15 Jun 2026 Lawful development