Stilegate Blanche Lane South Mimms Potters Bar EN6 3LF

1. 29 Feb 2008

   Received by Hertsmere

2. 12 Mar 2008

   Validated

   Checked as complete and ready for consideration.

3. 12 Nov 2008

   Decision issued: Grant Permission

4. 25 Aug 2026

   Added to PlanIndex

Hertsmere granted permission on 12 November 2008, 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 full application seeks permission for a complete, detailed proposal in one go, with siting, design, access and landscaping all fixed at this stage. More in our guide to planning application types.

• W Block Clare Hall Laboratories Blanche Lane South Mimms Hertfordshire

  26/0988/OUT Submitted 17 Jul 2026 150 yards away

  87% historically approved · decision due ~11 Sep

  Outline application (with all matters reserved except for means of access) for the demolition of buildings on site and erection of up to 185 homes (including 50% affordable housing) alongside access, landscaping, car parking and associated works.

  Awaiting decision Outline Demolition 105 docs

• Stilegate Blanche Lane South Mimms EN6 3LF

  TP/07/0606 Submitted 15 Aug 2007 200 yards away

  Retention of a temporary mobile home for 18 months.

  Granted 5 docs

• W Block Clare Hall Laboratories Blanche Lane South Mimms Hertfordshire

  22/0876/FUL Submitted 18 May 2022 250 yards away

  Erection of two new buildings within the grounds and an extension to the W-Block for research and development use (Class E), car parking, servicing, landscaping and associated works.

  Granted Full applications Extension 76 docs

• Clare Hall Manor Blanche Lane South Mimms Hertfordshire EN6 3LD

  22/1180/LBC Submitted 5 Jul 2022 300 yards away

  Internal alterations to the Modern West Wing to include removal of the north stairwell, widening of the first floor terrace and subdivision of the Modern West Wing to include layout changes to common room, to provide plant and laundry rooms. Widening of the first floor terrace at the southern end of the western wing and like for like replacement of rainwater goods. Internal alterations to the Main House to allow for the conversion of the communal kitchen to a common room (following grant of application 19/2031/LBC). (Application for Listed Building consent).

  Granted Heritage and listed buildings 15 docs

• N I B S C Blanche Lane South Mimms EN6 3QG

  TP/06/1348 Submitted 24 Oct 2006 350 yards away

  Erection of single storey laboratory building at the centre of the site (temporary permission).

  Granted Full applications 7 docs
  Small domestic

• 1 Guinea Cottage Crossoaks Lane Ridge Hertfordshire EN6 3LN

  19/1644/HSE Submitted 14 Oct 2019 0.3 miles away

  Demolition of garage and construction of single storey rear extension, two storey side extension, and front porch extension to include chimney stack removal with associated roof alterations.

  Granted Householder Extension Roofing +1 13 docs
  Small domestic

• 26/1045/FUL Decided

  The Borehamwood Elstree Childrens Centre Shakespeare Drive Borehamwood Hertfordshire WD6 2FD

  Erection of 2x banners.

  Received 27 Jul, published by the council 28 Aug 2026 Full applications
• 26/1504/FUL Awaiting decision

  100 London Road Shenley Radlett Hertfordshire WD7 9DX

  Single-storey front extension.

  Received 19 Oct, published by the council 21 Oct 2026 Full applications
• 26/1033/FUL Granted

  4 Farrington Avenue Bushey Hertfordshire WD23 3DG

  Retention of existing single storey outbuilding for continued charitable initiatives associated with the Red Trust, Bushey (Retrospective).

  Received 23 Jul, published by the council 8 Aug 2026 Full applications
• 26/1497/FUL Awaiting decision

  46 London Road Shenley Radlett Hertfordshire WD7 9DY

  Demolition of existing garage and subdivision to facilitate construction of two storey detached dwelling, front boundary works to include re-positioning of crossover / dropped kerb and vehicular hardstanding with associated hard and soft landscaping, bin and bicycle storage.

  Received 16 Oct, published by the council 22 Oct 2026 Full applications
• 26/1484/FUL Awaiting decision

  Stormont School The Causeway Potters Bar Hertfordshire EN6 5HA

  The replacement of the existing floodlights to the Multi-Use Games Area at Stormont School with a new low spill and low glare system to the requirements of Sport England, The Institute of Lighting Professionals and BSEN 12193.

  Received 14 Oct, published by the council 20 Oct 2026 Full applications