117 Stonecross Road Hatfield AL10 0HS

1. 13 Aug 2026

   Received by Welwyn Hatfield

2. 14 Aug 2026

   Validated

   Checked as complete and ready for consideration.

3. 25 Aug 2026

   Added to PlanIndex

4. Decision

   Awaiting decision

   Decision expected by 9 October 2026, 8 weeks from validation under the statutory target for most applications. Extensions of time are common and are agreed case by case.

   Welwyn Hatfield took a median of 58 days over the applications it decided in the last year.

This application is with Welwyn Hatfield for determination. The council publicises it, consults neighbours and technical bodies where required, and weighs the responses against local and national planning policy.

The statutory target is eight weeks for most applications and thirteen for major development, though extensions of time are common. Comments carry most weight while the case is undecided, so check the council portal for the deadline if you want to respond.

Householder applications cover work to an existing house and its garden: extensions, loft and garage conversions, porches, outbuildings and similar alterations within the boundary of the home. They cannot be used to create a separate dwelling or change what the building is used for. Councils aim to decide them within eight weeks, and immediate neighbours are usually notified and given a chance to comment.

More on householder applications in our guide

• 121 Stonecross Road Hatfield AL10 0HS

  6/2023/0067/LAWP Submitted 11 Jan 2023 30m away

  Certificate of lawfulness for proposed hip to gable end loft conversion with rear facing flat roof dormer, juliette balcony and new rooflight to front roof elevation

  Granted Lawful development Loft or dormer

• 16 Cobmead Hatfield AL10 0JF

  6/2025/2274/COND Submitted 27 Oct 2025 52m away

  88% historically approved · decision due ~24 Dec

  Submission of details pursuant to condition 1 (Landscaping details), condition 2 (External materials) and condition 5 (Landscape management and maintenance plan) on planning permission 6/2024/2383/FULL

  Awaiting decision Conditions

• 2 Harvest Mead Hatfield AL10 0JD

  6/2021/2071/LAWE Submitted 8 Jul 2021 151m away

  Certificate of lawfulness for the existing conservatory

  Granted Lawful development Extension

• 121 Crawford Road Hatfield AL10 0PF

  6/2023/0373/HOUSE Submitted 17 Feb 2023 176m away

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

  Granted Householder Extension Loft or dormer
  Small domestic

• 121 Crawford Road Hatfield AL10 0PF

  6/2022/2686/HOUSE Submitted 25 Nov 2022 176m away

  Erection of two storey side and rear extension and single storey front and rear extension and installation of rear dormer to facilitate conversion of loft to habitable space

  Refused Householder Extension Loft or dormer
  Small domestic

• 121 Crawford Road Hatfield AL10 0PF

  6/2022/2645/LAWP Submitted 21 Nov 2022 176m away

  Certificate of lawfulness for hip to gable conversion, rear dormer, three front rooflights and one first floor side elevation window

  Granted Lawful development Loft or dormer Windows or glazing 4 docs

• 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
• 6/2026/0703/HOUSE Granted

  57 Great North Road Brookmans Park AL9 6LA

  Erection of part double part single storey rear extension, single storey front porch extension, raising of roof and eaves to accommodate loft conversion, alterations to materials and fenestration, erection of front boundary wall and gates

  20 Apr 2026 Householder
• 6/2026/0534/HOUSE Refused

  16 Chipmunk Chase Hatfield AL10 9GH

  Retention of single storey rear extension and garage conversion to study/office

  24 Mar 2026 Householder
• 6/2026/1175/HOUSE Granted

  5A Honeycroft Welwyn Garden City AL8 6HR

  Erection of a single storey rear extension, alterations to opening on side elevation and garden room with covered area following demolition of conservatory

  7 Jul 2026 Householder