3 Summerhouse Lane Aldenham Watford Hertfordshire WD25 8DL

This site has had 4 applications since 2021: 0 approved, 2 refused.

• 23/0237/HSE Refused

  3 Summerhouse Lane Aldenham Watford Hertfordshire WD25 8DL

  Conversion of loft to form habitable space including roof alterations, three rear dormers and 3 roof lights to front.

  Decided 6 Apr 2023 Householder
• 21/1755/TPO Refused

  3 Summerhouse Lane Aldenham Watford Hertfordshire WD25 8DL

  T1 ASH. Fell.

  Decided 4 Oct 2021 Trees
• 21/1748/TRC Decided

  3 Summerhouse Lane Aldenham Watford Hertfordshire WD25 8DL

  T2 LEYLAND CYPRESS. Fell. T3 DAWN REDWOOD. Reduce the lowest substantial branch, that extends over patio, by approximately 2-3m. T4 DAWN REDWOOD. Fell. T5 DAWN REDWOOD. Reduce the lowest substantial branch, that extends over garden, by approximately 2-3m. T6 PEAR. Raise crown to approximately 4m above ground level.

  Decided 4 Oct 2021 Trees

1. 4 Jun 2026

   Received by Hertsmere

2. 18 Jun 2026

   Validated

   Checked as complete and ready for consideration.

3. 24 Jul 2026

   Added to PlanIndex

4. Decision

   Awaiting decision

   Decision expected by 13 August 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.

• 3 Summerhouse Lane Aldenham Watford Hertfordshire WD25 8DL

  23/0237/HSE Submitted 13 Feb 2023 50 yards away

  Conversion of loft to form habitable space including roof alterations, three rear dormers and 3 roof lights to front.

  Refused Householder Loft or dormer Roofing 8 docs
  Domestic

• 5 Summerhouse Lane Aldenham Watford Hertfordshire WD25 8DL

  26/0104/VOC Submitted 28 Jan 2026 50 yards away

  Variation of condition 2 (approved plans) of planning permission 25/0781/FUL (Demolition of existing building and construction of replacement detached two storey 5x bed dwelling including habitable space at loft level). Variation would allow for alternative external materials and insertion of additional roof light.

  Granted Amendments Loft or dormer Demolition 11 docs
  Domestic

• 5 Summerhouse Lane Aldenham Watford Hertfordshire WD25 8DL

  26/0083/DOC Submitted 23 Jan 2026 50 yards away

  Application for approval of details reserved by condition 4 (levels) of planning permission reference 25/0781/FUL.

  Granted Conditions 6 docs

• St Pierre Hilfield Lane Aldenham Watford Hertfordshire WD25 8DW

  24/0981/HSE Submitted 29 Jul 2024 100 yards away

  Single storey front, side and rear extensions.

  Granted Householder Extension 11 docs
  Small domestic

• Garden Cottage Summerhouse Lane Aldenham Watford Hertfordshire WD25 8DL

  26/0294/HSE Submitted 5 Mar 2026 100 yards away

  Front boundary works to included dropped kerb and vehicular hardstanding with associated gate / fencing, repair and extension to existing brick boundary wall and associated soft landscaping.

  Refused Householder Extension 21 docs
  Small domestic

• Garden Cottage Summerhouse Lane Aldenham Watford Hertfordshire WD25 8DL

  26/0393/LBC Submitted 25 Mar 2026 100 yards away

  Front boundary works to included dropped kerb and vehicular hardstanding with associated gate / fencing, repair and extension to existing brick boundary wall and associated soft landscaping. (Application for Listed Building Consent. Accompanying householder application under reference 26/0294/HSE.)

  Refused Heritage and listed buildings Extension 14 docs
  Small domestic

• 26/1319/HSE Granted

  54 The Shrublands Potters Bar Hertfordshire EN6 2BW

  Single storey side extension and front porch.

  Received 10 Sep, published by the council 23 Sep 2026 Householder
• 26/1324/HSE Granted

  12 Nightingale Close Radlett Hertfordshire WD7 8NT

  Partial conversion of garage to habitable space, construction of single storey rear extension and front porch extension, alterations to fenestration.

  Received 11 Sep, published by the council 21 Sep 2026 Householder
• 26/1263/HSE Granted

  11 Juniper Gardens Shenley Radlett Hertfordshire WD7 9LA

  Single storey rear extension.

  Received 1 Sep, published by the council 23 Sep 2026 Householder
• 26/1303/HSE Granted

  14 Hartfield Avenue Elstree Borehamwood Hertfordshire WD6 3JE

  Alterations to fenestration to include replacement of garage door with window and side elevation window changes.

  Received 8 Sep, published by the council 15 Sep 2026 Householder
• 26/1248/HSE Granted

  24 Farm Way Bushey Hertfordshire WD23 3SS

  Single storey rear extension; single storey front extension to include porch, conversion of garage to habitable space and replacement of garage door with window; first floor side extension.

  Received 28 Aug, published by the council 4 Sep 2026 Householder