17 Sycamore Avenue Hatfield AL10 8LZ

1. 12 Jun 2026

   Received by Welwyn Hatfield

2. 24 Jul 2026

   Added to PlanIndex

3. 30 Jul 2026

   Decision issued: Withdrawn

The applicant withdrew this application before Welwyn Hatfield decided it, and is free to submit a revised scheme at any time. 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.

• 2 Sycamore Avenue Hatfield AL10 8LZ

  6/2026/1160/HOUSE Submitted 3 Jul 2026 82m 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

• 12 Sycamore Avenue Hatfield AL10 8LZ

  6/2024/2005/PN8 Submitted 18 Oct 2024 83m 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 AL10 8LZ

  6/2024/2271/PN8 Submitted 26 Nov 2024 83m away

  Prior approval for the erection of a single storey rear extension measuring 5.9m in depth, 2.9m in height and 2.5m to the eaves

  Granted Prior approval Extension
  Small domestic

• 12 Sycamore Avenue Hatfield AL10 8LZ

  6/2024/1548/HOUSE Submitted 14 Aug 2024 83m 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 84m 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

• 26 Peregrine Way Hatfield AL10 9UP

  6/2026/0440/LAWP Submitted 10 Mar 2026 112m away

  Certificate of lawfulness for erection of an outbuilding

  Granted Lawful development

• 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

  Received 10 Jul, published by the council 24 Jul 2026 Householder
• 6/2026/1257/HOUSE Granted

  21 The Swallows Welwyn Garden City AL7 1BX

  Garage conversion with alterations to openings to front and rear elevations

  Received 17 Jul, published by the council 1 Aug 2026 Householder
• 6/2026/1293/HOUSE Granted

  33 Claves Crescent Welwyn Garden City AL7 1WN

  Erection of a single storey rear conservatory

  Received 22 Jul, published by the council 1 Aug 2026 Householder
• 6/2026/1202/HOUSE Granted

  40 Cecil Crescent Hatfield AL10 0HG

  Erection of single storey rear extension

  Received 10 Jul, published by the council 9 Aug 2026 Householder
• 6/2026/1228/HOUSE Granted

  109 Mount Way Welwyn Garden City AL7 4LA

  Erection of single storey front extension

  Received 13 Jul, published by the council 9 Aug 2026 Householder