3 Summerhouse Lane Aldenham Watford Hertfordshire WD25 8DL

This site has had 2 applications since 2023: 0 approved, 1 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

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 58 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 64 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.

• Garden Cottage Summerhouse Lane Aldenham Watford Hertfordshire WD25 8DL

  26/0833/LBC Submitted 16 Jun 2026 0m away

  Front boundary works to include new vehicular access, dropped kerb and vehicular hardstanding with associated gate / fencing, repair and extension to existing brick boundary wall and associated soft landscaping. (Associated application reference 26/0832/HSE.)

  Decided Heritage and listed buildings Extension 14 docs
  Small domestic

• Garden Cottage Summerhouse Lane Aldenham Watford Hertfordshire WD25 8DL

  26/0832/HSE Submitted 16 Jun 2026 0m away

  Front boundary works to include new vehicular access, dropped kerb and vehicular hardstanding with associated gate / fencing, repair and extension to existing brick boundary wall and associated soft landscaping. (Associated Listed Building Consent 26/0833/LBC.)

  Decided Householder Extension 16 docs
  Small domestic

• 5 Summerhouse Lane Aldenham Watford Hertfordshire WD25 8DL

  26/1098/DOC Submitted 4 Aug 2026 0m away

  Application for approval of details reserved by condition 3 (brick and roof tile) of planning permission reference 26/0104/VOC.

  Granted Conditions 2 docs

• Longwood Summerhouse Lane Aldenham Watford Hertfordshire WD25 8DL

  22/1837/DOC Submitted 31 Oct 2022 61m away

  Application for approval of details reserved by condition 15 (Construction Management Plan) of planning permission reference 20/1404/FUL

  Granted Conditions 6 docs

• 5 Summerhouse Lane Aldenham Watford Hertfordshire WD25 8DL

  26/0104/VOC Submitted 28 Jan 2026 61m 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 61m away

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

  Granted Conditions 6 docs

• 26/0157/HSE Decided

  8 The Drive Radlett Hertfordshire WD7 7DA

  Demolition of existing garage; construction of part single, part two storey side and rear extensions and front porch; alterations to levels and hard landscaping to front and rear; alterations to fenestration. (ADDITIONAL DOCUMENT RECEIVED: 18/08/2026 - Tree Report and Tree Protection Plan & secondary dropped kerb removed).

  9 Feb 2026 Householder
• 26/0653/HSE Decided

  45 Highview Gardens Potters Bar Hertfordshire EN6 5PN

  Construction of part single, part two storey side and rear extension with associated roof works.

  13 May 2026 Householder
• 26/0928/HSE Decided

  5 Dellfield Close Radlett Hertfordshire WD7 8LS

  Construction of two storey side and part single part two storey rear extension. Erection of detached double garage with ancillary utility space following the demolition of the existing garage. Conversion of loft to habitable room to include roof alterations and front, side and rear roof lights. Front porch extension.

  7 Jul 2026 Householder
• 26/0885/HSE Granted

  89 Hatfield Road Potters Bar Hertfordshire EN6 1HZ

  Demolition of existing detached garage and construction of part single, part two storey front, side and rear extension.

  26 Jun 2026 Householder
• 26/0985/HSE Decided

  3 Bentley Place Bentley Heath Barnet Hertfordshire EN5 4BF

  Part single, part two-storey rear extension, 2x new rear dormers, conversion of existing garage into habitable room, and alterations to fenestration.

  17 Jul 2026 Householder