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Planning application

304 Cassiobury Drive Watford WD17 3AP

Granted Watford 24/00460/HPD Householder Permitted Development

Works: Extension Small domestic

Read from the description, not a valuation. How we read the register

Permission granted. Work must normally begin within three years of the decision or the permission lapses.

Proposal

The erection of a single storey rear extension which would extend beyond the rear wall of the original house by 6.00m for which the maximum height would be 3.00m and for which the height of the eaves would be 2.85m

As published by the council, reference 24/00460/HPD

Application record

Reference
24/00460/HPD
Type
Householder Permitted Development
Status
Approved
Decision
Grant HPD Prior Approval
Received
14 May 2024
Validated
20 May 2024
Decided
1 Jul 2024
Ward
Park
Decision by
Delegated Decision
Postcode
WD17 3AP

Site history

Applications at this address on the Watford register

This site has had 5 applications since 2024: 1 approved, 0 refused.

  • 25/00589/FULH Decided

    304 Cassiobury Drive Watford WD17 3AP

    Retrospective application for existing x2 rear outbuildings and proposed side boundary treatment

    Decided 16 Sep 2025 Householder
  • 25/00080/FULH Decided

    304 Cassiobury Drive Watford WD17 3AP

    Retrospective application for the construction of a front facing dormer

    Decided 8 Apr 2025 Householder
  • 24/00655/FULH Decided

    304 Cassiobury Drive Watford WD17 3AP

    Erection of a part single and part double storey rear extension, garage conversion and alterations to existing porch.

    Decided 3 Sep 2024 Householder
  • 24/00656/FULH Decided

    304 Cassiobury Drive Watford WD17 3AP

    Erection of part single and part double storey rear extension, garage conversion and alterations to existing porch

    Decided 3 Sep 2024 Householder

Timeline

Dates from the published record

  1. 14 May 2024

    Received by Watford

  2. 20 May 2024

    Validated

    Checked as complete and ready for consideration.

  3. 1 Jul 2024

    Decision issued: Grant HPD Prior Approval

  4. 22 Aug 2026

    Added to PlanIndex

Documents

Plans, drawings, consultee responses and the officer's report

9 documents on file for this application

A planning file usually holds the application form, drawings and site plans, consultee responses, the officer's report and the decision notice.

Trade members open them from here.

Open the documents

What this grant of permission means

Watford granted permission on 1 July 2024, 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.

About prior approval applications

Prior approval applies where permitted development rights already grant the principle of the work, leaving the council only the specific matters the rules name, commonly within 56 days. More in our guide to planning application types.

Nearby applications

Within 500 metres

  • 304 Cassiobury Drive Watford WD17 3AP

    25/00589/FULH Submitted 23 Jun 2025 0m away

    Retrospective application for existing x2 rear outbuildings and proposed side boundary treatment

    Decided Householder 14 docs
    Domestic
  • 304 Cassiobury Drive Watford WD17 3AP

    25/00080/FULH Submitted 29 Jan 2025 0m away

    Retrospective application for the construction of a front facing dormer

    Decided Householder Loft or dormer 11 docs
    Domestic
  • 304 Cassiobury Drive Watford WD17 3AP

    24/00655/FULH Submitted 9 Jul 2024 0m away

    Erection of a part single and part double storey rear extension, garage conversion and alterations to existing porch.

    Decided Householder Extension 10 docs
    Small domestic
  • 304 Cassiobury Drive Watford WD17 3AP

    24/00656/FULH Submitted 9 Jul 2024 0m away

    Erection of part single and part double storey rear extension, garage conversion and alterations to existing porch

    Decided Householder Extension 9 docs
    Small domestic
  • 306 Cassiobury Drive Watford WD17 3AW

    26/00154/FULH Submitted 25 Feb 2026 20m away

    Erection of two storey rear and side extension and loft conversion with the rear and side dormer

    Decided Householder Extension Loft or dormer 11 docs
    Domestic
  • 300 Cassiobury Drive Watford WD17 3AP

    24/00493/FULH Submitted 23 May 2024 26m away

    (Part Retrospective) Change of use of garage into a habitable space. A new flat roof replaces an old corrugated sheet roof. The new roof height does not exceed 2500mm. The garage door is being replaced with a brick infill and a window. To the rear, replacing the old door and window with a new one. To the side changing the roof type from a corrugated sheet roof to a flat roof.

    Decided Householder Extension Roofing +1 12 docs
    Domestic

In Watford

  • 26/00604/HPD Granted

    8 Robin Place Boundary Way Watford WD25 7SL

    The erection of a single storey rear extension which would extend beyond the rear wall of the original house by 3.50m for which the maximum height would be 3.00m and for which the height of the eaves would be 3.00m

    4 Aug 2026 Prior approval
  • 26/00623/HPD Granted

    125 North Western Avenue Watford WD25 0AQ

    The erection of a single storey rear extension which would extend beyond the rear wall of the original house by 6.00m for which the maximum height would be 3.00m and for which the height of the eaves would be 3.00m

    10 Aug 2026 Prior approval
  • 26/00697/HPD Awaiting decision

    11 The Chase Watford WD18 7JQ

    The erection of a single storey rear extension which would extend beyond the rear wall of the original house by 6m for which the maximum height would be 3.3m and for which the height of the eaves would be 2.8m

    2 Sep 2026 Prior approval
  • 26/00587/HPD Granted

    43 York Road Watford Hertfordshire WD18 0BE

    The erection of a single storey rear extension which would extend beyond the rear wall of the original house by 3.55m for which the maximum height would be 2.90m and for which the height of the eaves would be 2.60m (REVISED MEASUREMENTS)

    29 Jul 2026 Prior approval
  • 26/00581/HPD Granted

    23 Westlea Avenue Watford WD25 9DH

    The erection of a single storey rear extension which would extend beyond the rear wall of the original house by 6.00m for which the maximum height would be 2.95m and for which the height of the eaves would be 2.95m

    28 Jul 2026 Prior approval