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
• 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

1. 10 Nov 2023

   Received by Watford

2. 22 Dec 2023

   Decision issued: Refuse Lawful Development Certificate

3. 24 Jul 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.

A lawful development certificate is a legal determination that existing or proposed works do not need planning permission; the merits of the scheme are not considered. More in our guide to planning application types.

• 157 Cassiobury Drive Watford WD17 3AL

  26/00559/FULH Submitted 21 Jul 2026 4m 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

  26/00192/FULH Submitted 9 Mar 2026 4m 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 4m 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

• 74 Langley Way Watford WD17 3FB

  26/00155/FULH Submitted 26 Feb 2026 69m 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 72m 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 72m 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

• 26/00672/LDC Granted

  84 North Western Avenue Watford WD25 0AJ

  Lawful development certificate for proposed single storey rear extension

  24 Aug 2026 Lawful development
• 26/00714/LDC Awaiting decision

  25 Westbury Road Watford Hertfordshire WD18 0DL

  Lawful development certificate for proposed loft conversion including rear dormer and x front rooflights

  8 Sep 2026 Lawful development
• 26/00704/LDC Awaiting decision

  268 Hempstead Road Watford WD17 4LY

  Lawful development certificate for proposed hip to gable loft conversion to extend main ridge line and rear dormer

  4 Sep 2026 Lawful development
• 26/00605/LDC Granted

  503 Whippendell Road Watford WD18 7QB

  Lawful Development Certificate for existing use of hip to gable loft conversion including rear dormer, roof extension and x2 front roof lights

  3 Aug 2026 Lawful development
• 26/00700/LDC Awaiting decision

  13 Orchard Close Watford WD17 3DU

  Lawful Development Certificate for a hip to gable loft conversion with three skylights on the front slope.

  3 Sep 2026 Lawful development