16 Oak Road Woolmer Green SG3 6LS

1. 20 Aug 2026

   Received by Welwyn Hatfield

2. 21 Aug 2026

   Validated

   Checked as complete and ready for consideration.

3. 7 Sep 2026

   Added to PlanIndex

4. Decision

   Awaiting decision

   Decision expected by 16 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

• 16 Oak Road Woolmer Green SG3 6LS

  6/2026/1459/HOUSE Submitted 19 Aug 2026 0m away

  83% historically approved · decision due ~14 Oct

  Erection of annexe

  Awaiting decision Householder
  Domestic

• 12 Broadfield Road Woolmer Green Hertfordshire SG3 6LZ

  6/2023/0391/HOUSE Submitted 20 Feb 2023 76m away

  Erection of a single storey side/rear extension and partial garage conversion, with alterations to fenestration

  Granted Householder Extension Windows or glazing
  Small domestic

• 4 Holly Road Woolmer Green SG3 6LL

  6/2021/1031/HOUSE Submitted 29 Mar 2021 148m away

  Retrospective application for erection of front porch

  Granted Householder Extension
  Small domestic

• 2 Mardleybury Court Woolmer Green Knebworth SG3 6LP

  6/2019/2855/COND Submitted 12 Nov 2019 252m away

  Submission of details pursuant to condition 6 (arboricultural method statement) on planning permission 6/2019/0909/FULL

  Granted Conditions

• 50 Carvers Croft Woolmer Green Hertfordshire SG3 6LX

  6/2023/0296/LAWP Submitted 7 Feb 2023 295m away

  Certificate of lawfulness for the erection of a single storey rear extension

  Granted Lawful development Extension
  Small domestic

• 10 London Road Woolmer Green SG3 6JP

  6/2021/1932/LB Submitted 25 Jun 2021 313m away

  Erection of rear extension and glazed link extension. Conversion of existing garage into habitable accommodation and internal ground floor alterations

  Refused Heritage and listed buildings Extension Windows or glazing

• 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