157 Cassiobury Drive Watford WD17 3AL

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

• 26/00559/FULH Granted

  157 Cassiobury Drive Watford WD17 3AL

  Proposed roof alteration involving double hip-to-gable conversion; erection of a rear crown-roof dormer; erection of a front dormer; installation of 4 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 8 Sep 2026 Householder
• 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
• 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. 9 Mar 2026

   Received by Watford

2. 30 Apr 2026

   Decision issued: Refuse Planning Permission

3. 9 Aug 2026

   Added to PlanIndex

Watford refused this application for the reasons on the decision notice; only the applicant can appeal, and refused schemes often return in revised form. 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

  26/00559/FULH Submitted 21 Jul 2026 50 yards away

  Proposed roof alteration involving double hip-to-gable conversion; erection of a rear crown-roof dormer; erection of a front dormer; installation of 4 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.

  Granted Householder Loft or dormer Windows or glazing 17 docs
  Domestic

• 157 Cassiobury Drive Watford WD17 3AL

  26/00372/FULH Submitted 12 May 2026 50 yards 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 50 yards 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 100 yards 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 100 yards 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 100 yards 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

• 26/00644/FULH Granted

  16 Garden Close Watford Hertfordshire WD17 3DP

  Erection of a two storey side extension with new two storey gables entrance atrium and front two-storey bay. Single storey side extension to left hand side to house the new garage and single storey rear infill extension no more than 6m`s deep from the original wall.

  Received 14 Aug, published by the council 22 Aug 2026 Householder
• 26/00754/FULH Awaiting decision

  498 Whippendell Road Watford WD18 7QJ

  Erection of a ground floor wrap around extension, plus front porch.

  Received 28 Sep, published by the council 7 Oct 2026 Householder
• 26/00759/FULH Awaiting decision

  Gorran Haven Trevellance Way Watford WD25 0LY

  Erection of a double storey side and rear extensions and a single storey front extension.

  Received 28 Sep, published by the council 7 Oct 2026 Householder
• 26/00752/FULH Awaiting decision

  3 East Drive Watford Hertfordshire WD25 0AH

  Erection of single storey side extension and conversion of existing garage into habitable room

  Received 28 Sep, published by the council 1 Oct 2026 Householder
• 26/00756/FULH Awaiting decision

  40 Capel Road Watford WD19 4AE

  Erection of single storey rear extension

  Received 28 Sep, published by the council 1 Oct 2026 Householder