236 Whippendell Road Watford Hertfordshire WD18 7NL

1. 20 Jan 2023

   Received by Watford

2. 10 Mar 2023

   Decision issued: Grant Lawful Development Certificate

3. 24 Jul 2026

   Added to PlanIndex

Watford granted permission on 10 March 2023, 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.

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.

• 57 Princes Avenue Watford WD18 7RR

  21/00437/FULH Submitted 23 Mar 2021 50 yards away

  Erection of single storey side and rear extension

  Refused Householder Extension 6 docs
  Small domestic

• 71 Princes Avenue Watford WD18 7RR

  26/00443/FULH Submitted 11 Jun 2026 50 yards away

  Erection of single storey side and rear extension

  Refused Householder Extension 10 docs
  Small domestic

• 71 Princes Avenue Watford WD18 7RR

  26/00264/FULH Submitted 27 Mar 2026 50 yards away

  Erection of a single story side and rear extension. Convert the loft space into a habitable space with the erection of a dormer and insertion of 2 front roof windows and 1 roof light.

  Refused Householder Extension Loft or dormer +1 13 docs
  Domestic

• 252 Whippendell Road Watford WD18 7NL

  24/00306/HPD Submitted 28 Mar 2024 50 yards away

  The erection of a single storey rear extension which would extend beyond the rear wall of the original house by 4.6m for which the maxium height would be 3.5m and for which the height of the eaves would be 2.8m

  Granted Prior approval Extension 3 docs
  Small domestic

• 237 Whippendell Road Watford Hertfordshire WD18 7NN

  23/00189/FULH Submitted 6 Mar 2023 50 yards away

  Retention of the infill rear/side extension and conversion of the loft space to habitable use involving 2 front roof lights and chimney removal plus associated alterations (retrospective)

  Granted Householder Extension Loft or dormer 6 docs
  Domestic

• 256 Whippendell Road Watford WD18 7NL

  25/00729/LDC Submitted 6 Aug 2025 50 yards away

  Lawful development certificate for existing use- Change of Use from Class C3 (Dwellinghouse) to Class C4 (HMO for up to 6 persons)

  Granted Lawful development 6 docs
  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