11 Peplins Close Brookmans Park AL9 7UX

1. 19 Jul 2021

   Received by Welwyn Hatfield

2. 16 Sep 2021

   Decision issued: Granted

3. 13 Sep 2026

   Added to PlanIndex

Welwyn Hatfield granted permission on 16 September 2021, 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.

A lawful development certificate is a legal determination that existing or proposed works do not need planning permission; the merits of the scheme are not considered. More in our guide to planning application types.

• 31 Bradmore Way Brookmans Park Hatfield AL9 7QY

  6/2019/2687/HOUSE Submitted 24 Oct 2019 51m away

  Erection of single storey and part two storey rear extension with installation of 2 x roof lights following demolition of conservatory

  Granted Householder Extension Loft or dormer +1
  Small domestic

• 15 Bradmore Way Brookmans Park AL9 7QY

  6/2026/0864/HOUSE Submitted 15 May 2026 60m away

  Erection of two storey side and rear extension (resubmission of lapsed consent 6/2022/1846/HOUSE)

  Granted Householder Extension
  Major scheme

• 33 Bradmore Way Brookmans Park AL9 7QY

  6/2026/0817/HOUSE Submitted 11 May 2026 60m away

  85% historically approved · decision due ~26 Aug

  Extensions to the existing roof to form a crown roof, with rear dormer, insertion of rooflights and single storey side and rear extension

  Awaiting decision Householder Extension Loft or dormer
  Small domestic

• 14 Peplins Way Hatfield AL9 7UU

  6/2021/1713/LAWP Submitted 28 May 2021 111m away

  Certificate of lawfulness for a conversion of garage into a habitable room and alteration to porch steps.

  Granted Lawful development Extension
  Small domestic

• 1 Bradmore Way, Brookmans Park, Hatfield AL9 7QY

  6/2021/1721/HOUSE Submitted 1 Jun 2021 143m away

  Erection of a single storey rear infill extension plus projecting timber decking and steps

  Granted Householder Extension
  Small domestic

• 39 Peplins Way Brookmans Park AL9 7UR

  6/2022/2613/HOUSE Submitted 16 Nov 2022 147m away

  Erection of a single storey front extension to incorporate new porch and extend end garage, a two storey side and rear extension, single storey rear extension, patio area with pergola.

  Granted Householder Extension
  Small domestic

• 6/2026/1370/LAWP Granted

  17-17A Mill Lane Welwyn AL6 9EU

  Certificate of lawfulness for the change of use of offices to 3 x 2 bedroom flats

  Received 3 Aug, published by the council 15 Aug 2026 Lawful development
• 6/2026/1218/LAWP Granted

  43 Great Ley Welwyn Garden City AL7 4TJ

  Certificate of lawfulness for rear dormer roof extension to form a loft conversion

  Received 13 Jul, published by the council 9 Aug 2026 Lawful development
• 6/2026/1250/LAWP Granted

  40 Dellsome Lane Welham Green Hatfield AL9 7ND

  Certificate of lawfulness for Class A - Larger single storey rear extension (previously subject to prior approval application ref: 6/25/1851/PN8), Class B - Roof extension/hip to gable conversion, Class C - Other alterations to roof

  Received 16 Jul, published by the council 9 Aug 2026 Lawful development
• 6/2026/1210/LAWE Refused

  9 Flamingo Close Hatfield AL10 9LU

  Certificate of lawfulness for the existing use of the property as a HMO (Use Class C4) in continuous use for over 10 years

  Received 10 Jul, published by the council 9 Aug 2026 Lawful development
• 6/2026/0735/LAWE Refused

  1 Northaw Place Coopers Lane Northaw Potters Bar EN6 4NQ

  Certificate of lawfulness for the existing use of the land as residential garden land ancillary to the dwellinghouse continuously since 2012

  Received 27 Apr, published by the council 24 Jul 2026 Lawful development