21 The Swallows Welwyn Garden City AL7 1BX

1. 17 Jul 2026

   Received by Welwyn Hatfield

2. 1 Aug 2026

   Added to PlanIndex

3. 22 Aug 2026

   Status changed to Under Consideration

   Previously Under Consultation.

4. 10 Sep 2026

   Decision issued: Granted

Welwyn Hatfield granted permission on 10 September 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.

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.

• 75 Rosedale, Welwyn Garden City, AL7 1DP

  6/2026/1179/EMT Submitted 7 Jul 2026 35m away

  Reduce 1 x Oak by 1.5m in height and width

  Granted Trees

• 75 Rosedale Welwyn Garden City AL7 1DP

  6/2023/0310/EMT Submitted 8 Feb 2023 35m away

  1 x Oak to reduce by approximately 1.5m in height and 1.5m radially. To maintain size and health of tree that spans 4/5 gardens.

  Granted Trees

• 79 Rosedale Welwyn Garden City AL7 1DP

  6/2024/1799/EM Submitted 18 Sep 2024 36m 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

• 33 The Swallows Welwyn Garden City AL7 1BX

  6/2024/1830/HOUSE Submitted 24 Sep 2024 43m away

  Loft conversion with dormer to rear and insertion of rooflights to existing front roof elevation

  Granted Householder Loft or dormer
  Domestic

• 35 The Swallows Welwyn Garden City AL7 1BX

  6/2021/1582/HOUSE Submitted 18 May 2021 51m away

  Garage conversion, including window to front. Loft conversion with insertion of roof lights and window to side elevation.

  Granted Householder Loft or dormer Windows or glazing
  Small domestic

• 145 Blythway Welwyn Garden City AL7 1DS

  6/2023/0629/HOUSE Submitted 21 Mar 2023 76m away

  Erection of a single storey front extension, following demolition of existing porch and insertion of two side windows, all including one-way privacy glass.

  Refused Householder Extension Demolition +1
  Small domestic

• 6/2026/1198/HOUSE Granted

  9 Mardley Hill Welwyn AL6 0UE

  Erection of single storey front, side and rear extension, raising the existing roof and formation of rear dormer. Alterations to the fenestration, including, installation of new windows and doors and external rendering and cladding, following the demolition of garage and porch

  10 Jul 2026 Householder
• 6/2026/1293/HOUSE Granted

  33 Claves Crescent Welwyn Garden City AL7 1WN

  Erection of a single storey rear conservatory

  22 Jul 2026 Householder
• 6/2026/1202/HOUSE Granted

  40 Cecil Crescent Hatfield AL10 0HG

  Erection of single storey rear extension

  10 Jul 2026 Householder
• 6/2026/1228/HOUSE Granted

  109 Mount Way Welwyn Garden City AL7 4LA

  Erection of single storey front extension

  13 Jul 2026 Householder
• 6/2026/1011/HOUSE Granted

  5 Brookside Crescent Cuffley Potters Bar EN6 4QW

  Erection of rear extension, single storey side extension, new porch, additions/alterations to windows on side elevation and demolition of garage

  9 Jun 2026 Householder