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Planning application

147 Cassiobury Drive Watford WD17 3AH

Granted Watford 25/00029/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 7.70m for which the maximum height would be 2.98m and for which the height of the eaves would be 2.98m

As published by the council, reference 25/00029/HPD

Application record

Reference
25/00029/HPD
Type
Householder Permitted Development
Status
Approved
Decision
Grant HPD Prior Approval
Received
13 Jan 2025
Validated
21 Jan 2025
Decided
4 Mar 2025
Ward
Park
Decision by
Delegated Decision
Postcode
WD17 3AH

Site history

Applications at this address on the Watford register

This site has had 2 applications since 2025: 1 approved, 0 refused.

  • 25/00030/FULH Decided

    147 Cassiobury Drive Watford WD17 3AH

    Erection of a part single part two storey rear extension.

    Decided 17 Mar 2025 Householder

Timeline

Dates from the published record

  1. 13 Jan 2025

    Received by Watford

  2. 21 Jan 2025

    Validated

    Checked as complete and ready for consideration.

  3. 4 Mar 2025

    Decision issued: Grant HPD Prior Approval

  4. 9 Aug 2026

    Added to PlanIndex

Documents

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

5 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 4 March 2025, 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

  • 147 Cassiobury Drive Watford WD17 3AH

    25/00030/FULH Submitted 13 Jan 2025 0m away

    Erection of a part single part two storey rear extension.

    Decided Householder Extension 8 docs
    Domestic

  • 69 Langley Way Watford Hertfordshire WD17 3EB

    22/01253/FULH Submitted 26 Oct 2022 68m 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.

    Decided Householder Extension Loft or dormer +1 6 docs
    Small domestic

  • 69 Langley Way Watford Hertfordshire WD17 3EB

    22/00723/FULH Submitted 31 May 2022 68m 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.

    Decided Householder Extension Loft or dormer 5 docs
    Small domestic

  • 69 Langley Way Watford WD17 3EB

    18/01493/FULH Submitted 21 Nov 2018 68m away

    Erection of part single storey, part two storey rear extension, two storey side extension and loft conversion including front and rear rooflights

    Decided Householder Extension Loft or dormer 5 docs
    Small domestic

  • 3 Berceau Walk Watford Hertfordshire WD17 3BL

    23/00782/LDC Submitted 6 Sep 2023 74m away

    Lawful Development Certificate for Further loft conversion with hip to gable wall conversion to create two bedrooms and a shower room

    Granted Lawful development Loft or dormer 17 docs

  • 3 Berceau Walk Watford Hertfordshire WD17 3BL

    24/00636/FULH Submitted 4 Jul 2024 74m away

    Demolition of existing small rear extension and construction of a single storey side and rear extension.

    Refused Householder Extension Demolition 15 docs
    Small 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