71 Cassiobury Drive Watford WD17 3AG

1. 5 Jun 2026

   Received by Watford

2. 9 Jun 2026

   Validated

   Checked as complete and ready for consideration.

3. 24 Jul 2026

   Added to PlanIndex

4. 9 Aug 2026

   Status changed to Pending Decision

   Previously Pending consideration.

5. 10 Aug 2026

   Decision issued: Conditional Planning Permission

Watford granted permission on 10 August 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.

• 83 Cassiobury Drive Watford WD17 3AG

  19/00777/FULH Submitted 4 Jul 2019 100 yards away

  Demolition of existing garage and erection of a two storey side and part single/two storey rear extensions and roof alterations to enlarge existing loft conversion with associated internal alterations.

  Granted Householder Extension Loft or dormer +2 15 docs
  Domestic

• 44 Parkside Drive Watford WD17 3AX

  21/01570/FULH Submitted 25 Oct 2021 100 yards away

  Demolition of detached garage building, part two storey, part single storey rear and side extensions, conversion of loft space to provide habitable accommodation including the construction of a rear dormer window and new canopy roof to front entrance.

  Granted Householder Extension Loft or dormer +2 8 docs
  Small domestic

• 44 Parkside Drive Watford WD17 3AX

  21/01175/LDC Submitted 2 Aug 2021 100 yards away

  Lawful development certificate for proposed conversion of detached garage to habitable space/gym.

  Refused Lawful development 6 docs

• 44 Parkside Drive Watford WD17 3AX

  21/01174/LDC Submitted 2 Aug 2021 100 yards away

  Lawful development certificate for proposed single storey rear extension and single storey side extension

  Granted Lawful development Extension 6 docs
  Small domestic

• 83 Cassiobury Drive Watford WD17 3AG

  20/00620/NONMAT Submitted 19 Jun 2020 100 yards away

  Non-material amendment to planning permission 19/00777/FULH to reposition existing ground floor window and existing roof light to front elevation and additional roof light to the side elevation.

  Granted Amendments Loft or dormer Windows or glazing 5 docs

• 16 Garden Close Watford Hertfordshire WD17 3DP

  26/00463/FULH Submitted 18 Jun 2026 100 yards away

  Proposed 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 4m`s deep from the original wall. Alterations to the main roof including the front and the rear dormers.

  Refused Householder Extension Loft or dormer 20 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