4 - 6 Aldenham Grove Radlett Hertfordshire

1. 5 Feb 2026

   Received by Hertsmere

2. 10 Feb 2026

   Validated

   Checked as complete and ready for consideration.

3. 24 Jul 2026

   Added to PlanIndex

4. Decision

   Awaiting decision

   Decision expected by 7 April 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 56 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 outline applications in a median of 37 days. More in our guide to how long planning decisions take.

An outline application tests the principle of developing a site, holding back details such as appearance and landscaping as reserved matters for later approval. More in our guide to planning application types.

• Hightrees Aldenham Grove Radlett Hertfordshire WD7 7BN

  21/0998/TPO Submitted 10 May 2021 50 yards away

  T16 MOUNTAIN ASH. Fell. T2 BEECH. Reduce to previous points by 1.5m. From 17m to 15.5m height and 6m to 4.5m spread. T18 MAPLE. Reduce back to previous pointsapprox 2m. from 10m to 8m height and 4m to 2m spread.

  Refused Trees 6 docs

• 2A Aldenham Grove Radlett Hertfordshire WD7 7BN

  26/0078/FUL Submitted 22 Jan 2026 50 yards away

  84% historically approved · decision due ~7 Apr

  Demolition of dwelling at 2a and garage at 4 with plot alterations to allow for construction of replacement 6x bed dwelling basement level garage and swimming pool in rear garden. Associated landscaping to include front boundary works and new vehicle access (as amended by plans and documents received on 04.06.2026)

  Awaiting decision Full applications Demolition 36 docs
  Domestic

• 2 Hillside Road Radlett Hertfordshire WD7 7BH

  21/1413/HSE Submitted 7 Jul 2021 50 yards away

  Construction of single storey side extension (retrospective application).

  Granted Householder Extension 11 docs
  Small domestic

• 8 Aldenham Grove Radlett Hertfordshire WD7 7BW

  22/1396/DOC Submitted 11 Aug 2022 100 yards away

  Application for approval of details reserved by condition 4 (Arboricultural impact assessment results) following appeal APP/N1920/W/21/3281815 on application 21/0729/FUL

  Granted Conditions 3 docs

• 8 Aldenham Grove Radlett Hertfordshire WD7 7BW

  21/0729/FUL Submitted 6 Apr 2021 100 yards away

  Demolition of existing house and garage and construction of a replacement 2 storey, detached 6 bed dwelling to include separate self-contained guest accommodation above the double garage, and basement level with swimming pool, erection of detached outbuilding and associated landscaping.

  Refused Full applications Demolition 57 docs
  Small domestic

• 8 Aldenham Grove Radlett Hertfordshire WD7 7BW

  26/1113/TPO Submitted 1 Sep 2026 100 yards away

  74% historically approved · decision due ~27 Oct

  T1 Horse Chestnut - crown reduction of 3-4m in height to leave a final height of around 16m and reduce by around 3-4 m to leave a final width of around 13m T2 Beech - Crown reduction of around 2m to leave a final height of around 14m and a width of around 6m and a crown thin of 20% on secondary internal limbs. T3 Sycamore - crown reduction of around 3m to leave a final height of around 14m and a width of around 7m T4 Lime - crown reduction of around 3-4m to leave a final height of around 14m and a final width of around 6m T5 Lime - crown reduction of around 3-4m to leave a final height of around 14m and a final width of around 6m.

  Decided Trees 13 docs

• 26/1236/OUTEI Awaiting decision

  Home Farm Common Lane Radlett Hertfordshire WD7 8PL

  Outline planning application (with all matters reserved except access) comprising a residential development of up to 650 dwellings (Use Class C3); a one-form entry primary school and nursery; supporting mixed uses (Use Classes E and F) with associated landscaping; amenity space; drainage infrastructure and all other associated works. The application is accompanied by an Environmental Statement (EIA Development).

  Received 26 Aug, published by the council 29 Sep 2026 Outline
• 26/0962/EI2 Decided

  Land Known As Home Farm Common Lane Radlett Hertfordshire

  Request for a scoping opinion (Environmental Impact Assessment).

  Received 10 Jul, published by the council 24 Jul 2026 Outline
• 26/1112/OUT Awaiting decision

  Land South Of Allum Lane Elstree Borehamwood Hertfordshire

  Outline planning application (with all matters reserved except access) for the erection of residential dwellings (Class C3), new access, landscaping, parking and ancillary works.

  Received 5 Aug, published by the council 9 Aug 2026 Outline
• 26/1048/OUT Awaiting decision

  Land Rear Of 31 - 61 Blanche Lane South Mimms Hertfordshire

  Construction of up to 49 dwellings on Land off Blanche Lane. (Outline application to include access, all other matters reserved)

  Received 28 Jul, published by the council 11 Aug 2026 Outline
• 26/0988/OUT Awaiting decision

  W Block Clare Hall Laboratories Blanche Lane South Mimms Hertfordshire

  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.

  Received 17 Jul, published by the council 1 Aug 2026 Outline