119 Cassiobury Park Avenue Watford WD18 7LH

1. 31 Oct 2018

   Received by Watford

2. 5 Nov 2018

   Validated

   Checked as complete and ready for consideration.

3. 20 Dec 2018

   Decision issued: Conditional Planning Permission

4. 8 Sep 2026

   Added to PlanIndex

Watford granted permission on 20 December 2018, 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.

• 111 Cassiobury Park Avenue Watford WD18 7LH

  20/00454/FULH Submitted 5 May 2020 50 yards away

  Demolition of existing conservatory and existing garage building and construction of a single storey rear and side extension.

  Granted Householder Extension Demolition 7 docs
  Small domestic

• 111 Cassiobury Park Avenue Watford WD18 7LH

  26/00346/FULH Submitted 5 May 2026 50 yards away

  Erection of single storey rear extension with roof light

  Granted Householder Extension Loft or dormer 10 docs
  Small domestic

• 111 Cassiobury Park Avenue Watford WD18 7LH

  20/00455/LDC Submitted 5 May 2020 50 yards away

  Lawful Development Certificate for a loft conversion with rear dormer, hip-to-gable, velux window and solar panels and installation of obscure glazed window to side elevation.

  Granted Lawful development Loft or dormer Windows or glazing 6 docs

• 114 Cassiobury Park Avenue Watford WD18 7LF

  26/00318/FULH Submitted 23 Apr 2026 50 yards away

  Erection of front porch and single storey side to rear extension, part first floor rear extension (prior approval not required for ground floor extension which is under construction)

  Granted Householder Extension 11 docs
  Small domestic

• 114 Cassiobury Park Avenue Watford WD18 7LF

  26/00278/FULH Submitted 1 Apr 2026 50 yards away

  Erection of front porch and single storey side to rear extension

  Granted Householder Extension 12 docs
  Small domestic

• 105 Cassiobury Park Avenue Watford WD18 7LH

  26/00548/FULH Submitted 17 Jul 2026 50 yards away

  82% historically approved · decision due ~11 Sep

  Conversion of the existing garage to habitable use. Erection of a single storey side extension with a new hipped roof to the single storey side of the dwelling covering both the converted garage and the extension.

  Awaiting decision Householder Extension 16 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