12 Ark Avenue Borehamwood Hertfordshire WD6 1GH

1. 31 Jul 2026

   Received by Hertsmere

2. 7 Sep 2026

   Validated

   Checked as complete and ready for consideration.

3. 8 Sep 2026

   Added to PlanIndex

4. Decision

   Awaiting decision

   Decision expected by 2 November 2026, 8 weeks from validation under the statutory target for most applications. Extensions of time are common and are agreed case by case.

   Hertsmere took a median of 57 days over the applications it decided in the last year.

This application is with Hertsmere for determination, against a statutory target of eight weeks. Over the last year Hertsmere decided householder applications in a median of 65 days. More in our guide to how long planning decisions take.

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.

• Former Hertswood School Thrift Farm Lane Borehamwood Hertfordshire WD6 1TS

  21/0575/DOC Submitted 16 Mar 2021 50 yards away

  Application for approval of details reserved by condition 14 (details of plans and/or written specifications) of planning permission references 19/0117/FUL & 20/1021/VOC.

  Granted Conditions 10 docs

• Former Hertswood School Thrift Farm Lane Borehamwood Hertfordshire WD6 1TS

  21/0573/DOC Submitted 16 Mar 2021 50 yards away

  Application for approval of details reserved by Condition 7 (refuse strategy) of planning permission references 19/0117/FUL and 20/1021/VOC.

  Granted Conditions 6 docs

• 5 Thrift Farm Lane Borehamwood Hertfordshire WD6 1TR

  24/1671/PD42 Submitted 20 Dec 2024 50 yards away

  Single storey rear extension. Depth: 3.5m, Height: 3.5m, Eaves: 2.6m.

  Granted Prior approval Extension 7 docs
  Small domestic

• 37 Holmesley Road Borehamwood Hertfordshire WD6 1FU

  24/1350/HSE Submitted 18 Oct 2024 100 yards away

  Single storey side extension, levelling of side patio area and installation of replacement gate to side elevation.

  Granted Householder Extension 11 docs
  Small domestic

• 7 Nicholas Hawksmoor Drive Borehamwood Hertfordshire WD6 1AZ

  24/1001/HSE Submitted 2 Aug 2024 150 yards away

  Conversion of loft to habitable space to include rear dormer and 2x front rooflights.

  Granted Householder Loft or dormer 11 docs
  Domestic

• 314C Shenley Road Borehamwood WD6 1TT

  TP/12/2127 Submitted 12 Oct 2012 150 yards away

  Conversion of loft into habitable room with 2 No. front velux windows, creation of rear dormer & repositioning of existing solar panels from rear of roof to front.

  Granted Householder Loft or dormer Windows or glazing 9 docs
  Domestic

• 26/0805/HSE Granted

  Rydal Mount Lodge Baker Street Potters Bar Hertfordshire EN6 2BP

  Demolition of existing conservatory to facilitate construction of single storey rear extension and front porch extension.

  Received 10 Jun, published by the council 24 Jul 2026 Householder
• 26/1218/HSE Refused

  22 The Grove Radlett Hertfordshire WD7 7NF

  Conversion of garage to habitable space with window to replace garage door and new pitched roof, construction of first floor side extension and part single, part two storey rear extension with insertion of 1x side rooflight, alterations to fenestration and front hard landscaping.

  Received 24 Aug, published by the council 1 Sep 2026 Householder
• 26/1253/HSE Granted

  159 Arundel Drive Borehamwood Hertfordshire WD6 2LZ

  Construction of single storey rear extension with pitched roof and 3x rooflights, and alterations to fenestration.

  Received 28 Aug, published by the council 4 Sep 2026 Householder
• 26/1250/HSE Granted

  3 The Walk Potters Bar Hertfordshire EN6 1QL

  Single storey side extension following demolition of existing detached garage and shed.

  Received 28 Aug, published by the council 4 Sep 2026 Householder
• 26/1075/HSE Granted

  7 Belmor Elstree Borehamwood Hertfordshire WD6 3JX

  Proposed boundary treatments to the rear of the property including replacement fence.

  Received 31 Jul, published by the council 12 Aug 2026 Householder