31 Brockswood Lane Welwyn Garden City AL8 7BE

1. 16 Jul 2026

   Received by Welwyn Hatfield

2. 9 Aug 2026

   Added to PlanIndex

3. Decision

   Awaiting decision

   Decision expected by 10 September 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

• 31 Brockswood Lane Welwyn Garden City AL8 7BE

  6/2026/1361/EM Submitted 3 Aug 2026 0m away

  90% historically approved · decision due ~6 Oct

  Erection of part single storey part two storey rear extension, garage conversion and installation of air conditioning unit mounted at ground floor on the rear elevation

  Awaiting decision Extension
  Small domestic

• 29 Brockswood Lane Welwyn Garden City AL8 7BE

  6/2024/1377/HOUSE Submitted 18 Jul 2024 11m away

  Erection of a part single, part two storey rear extension, part demolition of existing garage, alterations to openings and extension to driveway

  Refused Householder Extension Demolition
  Domestic

• 29 Brockswood Lane Welwyn Garden City AL8 7BE

  6/2024/1370/EM Submitted 17 Jul 2024 11m away

  Erection of part single, part two storey rear extension, part demolition of existing garage, alterations to openings and extension to driveway

  Withdrawn Extension Demolition

• 29 Brockswood Lane Welwyn Garden City AL8 7BE

  6/2024/1839/HOUSE Submitted 25 Sep 2024 11m away

  Part single, part two storey rear extension, part demolition of existing garage, alterations to openings and extension to driveway

  Granted Householder Extension Demolition
  Domestic

• 29 Brockswood Lane, Welwyn Garden City, AL8 7BE

  6/2026/1253/EM Submitted 16 Jul 2026 11m away

  90% historically approved · decision due ~22 Sep

  Garage alterations including replacing roof, installation of doors and rendering of exterior

  Awaiting decision

• 29 Brockswood Lane Welwyn Garden City AL8 7BE

  6/2024/1842/EM Submitted 25 Sep 2024 11m away

  Part single, part two storey rear extension, part demolition of existing garage, alterations to openings and extension to driveway

  Granted Extension Demolition

• 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