11 Whippendell Road Watford WD18 7LY

1. 25 Apr 2025

   Received by Watford

2. 20 May 2025

   Decision issued: Refuse Lawful Development Certificate

3. 26 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.

• 13 Whippendell Road Watford WD18 7LY

  18/01253/FUL Submitted 1 Oct 2018 50 yards away

  Change the property from a 6 bedroom HMO to a 7 bedroom HMO

  Granted Full applications 11 docs

• 15 Whippendell Road Watford WD18 7LY

  26/00073/LDC Submitted 3 Feb 2026 50 yards away

  Change of use from a single dwellinghouse (Class C3) to a House of Multiple Occupation (Class C4) 6 bed; loft conversion with the erection of two dormers; erection of single storey rear extension

  Granted Lawful development Extension Loft or dormer 13 docs
  Small domestic

• 38 Addiscombe Road Watford WD18 0ND

  23/00682/HPD Submitted 4 Aug 2023 100 yards away

  The erection of a single storey rear extensions which would extend beyond the rear wall of the original house by 4.5m and 6m for which the maximum height would be 2.8m and for which the height of the eaves would be 2.6m

  Granted Prior approval Extension 4 docs
  Small domestic

• 28 Chester Road Watford Hertfordshire WD18 0RQ

  22/00450/HPD Submitted 4 Apr 2022 100 yards away

  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 3m and for which the height of the eaves would be 2.8m

  Granted Prior approval Extension 9 docs
  Small domestic

• 36 Addiscombe Road Watford WD18 0ND

  18/01106/LDC Submitted 29 Aug 2018 100 yards away

  Lawful Development Certificate for a single story rear extension.

  Refused Lawful development Extension 5 docs

• 36 Addiscombe Road Ground Floor Flat Watford WD18 0ND

  19/00110/FULH Submitted 30 Jan 2019 100 yards away

  Erection of a single storey rear extension

  Granted Householder Extension 5 docs
  Small domestic

• 26/00672/LDC Granted

  84 North Western Avenue Watford WD25 0AJ

  Lawful development certificate for proposed single storey rear extension

  Received 24 Aug, published by the council 14 Sep 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

  Received 8 Sep, published by the council 14 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

  Received 4 Sep, published by the council 14 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

  Received 3 Aug, published by the council 9 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.

  Received 3 Sep, published by the council 8 Sep 2026 Lawful development