157 Cassiobury Drive Watford WD17 3AL

This site has had 4 applications since 2023: 2 approved, 2 refused.

• 26/00372/FULH Granted

  157 Cassiobury Drive Watford WD17 3AL

  Proposed roof alteration involving double hip-to-gable conversion, erection of a rear crown roof dormer with french doors and juliet balcony, installation of 6 roof lights on the front and front/side roof slope, installation of new windows to the front, rear and side, installation of a side door to the ground floor, changes to finish materials and internal alterations.

  Decided 17 Jun 2026 Householder
• 26/00192/FULH Refused

  157 Cassiobury Drive Watford WD17 3AL

  Proposed roof alteration involving double hip-to-gable conversion; erection of a rear, crown-roof dormer with french doors and juliet balcony; installation of 6 x roof lights on the front and front/side roof slope; installation of new windows to the front, rear and side; installation of a side door to the ground floor; changes to finish materials; internal alterations.

  Decided 30 Apr 2026 Householder
• 23/01028/LDC Refused

  157 Cassiobury Drive Watford WD17 3AL

  Lawful Development Certificate For Roof alteration involving double hip to gable barn-end conversion; erection of a rear dormer with French Doors with Juliet Balcony; installation of front and side facing roof lights and new casement windows to thee front and rear

  Decided 22 Dec 2023 Lawful development

1. 21 Jul 2026

   Received by Watford

2. 26 Jul 2026

   Added to PlanIndex

3. 8 Sep 2026

   Decision issued: Conditional Planning Permission

Watford granted permission on 8 September 2026, 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.

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.

• 157 Cassiobury Drive Watford WD17 3AL

  26/00192/FULH Submitted 9 Mar 2026 0m away

  Proposed roof alteration involving double hip-to-gable conversion; erection of a rear, crown-roof dormer with french doors and juliet balcony; installation of 6 x roof lights on the front and front/side roof slope; installation of new windows to the front, rear and side; installation of a side door to the ground floor; changes to finish materials; internal alterations.

  Refused Householder Loft or dormer Windows or glazing 19 docs
  Domestic

• 157 Cassiobury Drive Watford WD17 3AL

  26/00372/FULH Submitted 12 May 2026 0m away

  Proposed roof alteration involving double hip-to-gable conversion, erection of a rear crown roof dormer with french doors and juliet balcony, installation of 6 roof lights on the front and front/side roof slope, installation of new windows to the front, rear and side, installation of a side door to the ground floor, changes to finish materials and internal alterations.

  Granted Householder Loft or dormer Windows or glazing 16 docs
  Domestic

• 157 Cassiobury Drive Watford WD17 3AL

  23/01028/LDC Submitted 10 Nov 2023 4m away

  Lawful Development Certificate For Roof alteration involving double hip to gable barn-end conversion; erection of a rear dormer with French Doors with Juliet Balcony; installation of front and side facing roof lights and new casement windows to thee front and rear

  Refused Lawful development Loft or dormer Windows or glazing 19 docs

• 74 Langley Way Watford WD17 3FB

  26/00155/FULH Submitted 26 Feb 2026 70m away

  Erection of 2 storey side extension and a porch with changes to fenstration on first floor facing Langley Road

  Refused Householder Extension 14 docs
  Small domestic

• 69 Langley Way Watford Hertfordshire WD17 3EB

  22/01253/FULH Submitted 26 Oct 2022 70m away

  Changes to the proposed extensions approved under planning permission ref: 22/00723/FULH. Erection of rear balcony, addition of rooflight above single storey rear extension, replacement of window in side extension front elevation for a door, addition of door to side elevation, repositioning of front entrance door, reduction in number of rooflights.

  Granted Householder Extension Loft or dormer +1 6 docs
  Small domestic

• 69 Langley Way Watford Hertfordshire WD17 3EB

  22/00723/FULH Submitted 31 May 2022 70m away

  Erection of part single storey, part two storey rear extension, two storey side extension and loft conversion including front and rear rooflights; renewal of previously approved application ref: 18/01493/FULH.

  Granted Householder Extension Loft or dormer 5 docs
  Small domestic

• 26/00712/FULH Awaiting decision

  32 Gade Avenue Watford Hertfordshire WD18 7LG

  Erection of a single storey rear extension and internal alterations.

  8 Sep 2026 Householder
• 26/00491/FULH Granted

  88 High Road Watford WD25 7LJ

  Retrospective planning application for timber framed cantilevered garden barbecue canopy with roof tiles to match existing

  29 Jun 2026 Householder
• 26/00550/FULH Granted

  39 The Ridgeway Watford WD17 4TH

  Proposed roof alteration and conversion of loft into habitable room with roof lights.

  17 Jul 2026 Householder
• 26/00601/FULH Granted

  28 Oakdene Road Watford WD24 6RW

  Erection of first floor rear extension

  3 Aug 2026 Householder
• 26/00553/FULH Granted

  117 Langley Way Watford WD17 3ED

  Demolition of existing side garage, construction of a 2 storey side extension and single storey rear extension. Installation of 2 Velux windows on upper roof slope.

  20 Jul 2026 Householder