Annexe Hart Hall Hyde Lane Nash Mills Hemel Hempstead Hertfordshire HP3 8SA

1. 19 Mar 2026

   Received by Three Rivers

2. 26 Mar 2026

   Validated

   Checked as complete and ready for consideration.

3. 24 Jul 2026

   Added to PlanIndex

4. 1 Aug 2026

   Status changed to Awaiting decision

   Previously Pending Consideration.

5. 4 Aug 2026

   Decision issued: Permitted

Three Rivers granted permission on 4 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.

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.

• Hyde Farm, Plantation Barn Hyde Lane Nash Mills HP3 8SA

  21/1535/LBC Submitted 17 Jun 2021 100 yards away

  Listed Building Consent: Single-storey side extension and alterations to fenestration

  Granted Heritage and listed buildings Extension Windows or glazing 10 docs
  Small domestic

• Hyde Farm, Plantation Barn Hyde Lane Nash Mills HP3 8SA

  20/1980/FUL Submitted 23 Sep 2020 100 yards away

  Single-storey extensions

  Refused Full applications Extension 15 docs
  Small domestic

• Hyde Farm, Plantation Barn Hyde Lane Nash Mills HP3 8SA

  20/1981/LBC Submitted 23 Sep 2020 100 yards away

  Listed Building Consent: Single-storey extensions

  Refused Heritage and listed buildings Extension 14 docs
  Small domestic

• Hyde Farm, Plantation Barn Hyde Lane Nash Mills HP3 8SA

  21/1534/FUL Submitted 17 Jun 2021 100 yards away

  Single-storey side extension and alterations to fenestration

  Granted Full applications Extension Windows or glazing 10 docs
  Small domestic

• Hyde Farm Hyde Lane Nash Mills Hemel Hempstead Hertfordshire HP3 8SA

  25/2075/LBC Submitted 28 Nov 2025 150 yards away

  Listed Building Consent: Change of use from Agricultural barn to Use (Class C3) Residential dwelling; demolition of existing outbuildings, rear porch and construction of single storey rear extension with rooflights; internal alterations and alterations to fenestration and associated landscaping works

  Granted Heritage and listed buildings Extension Loft or dormer +2 31 docs
  Small domestic

• Hyde Farm Hyde Lane Nash Mills Hemel Hempstead Hertfordshire HP3 8SA

  19/0490/PDNA Submitted 14 Mar 2019 150 yards away

  Permitted Development Notice Agriculture: Erection of agricultural barn

  Granted Other 6 docs

• 26/1382/CLPD Awaiting decision

  1 Wyatts Lodge Solesbridge Lane Chorleywood Rickmansworth Hertfordshire WD3 5SW

  Certificate of Lawfulness Proposed Development: Installation of external heating and cooling pump

  Received 31 Aug, published by the council 7 Sep 2026 Lawful development
• 26/1035/CLPD Granted

  90 Sherborne Way Croxley Green Rickmansworth Hertfordshire WD3 3PG

  Certificate of Lawfulness Proposed Development: lLoft conversion including hip to gable extension, rear dormer, and front rooflights and window to side elevation.

  Received 25 Jun, published by the council 24 Jul 2026 Lawful development
• 26/1004/CLPD Granted

  39 Bishops Avenue Northwood HA6 3DD

  Certificate of Lawfulness Proposed Development: Conversion of garage to habitable accommodation

  Received 19 Jun, published by the council 24 Jul 2026 Lawful development
• 26/0973/CLPD Granted

  125 Windmill Drive Croxley Green Rickmansworth Hertfordshire WD3 3FB

  Certificate of Lawfulness Proposed Development: Loft conversion including rear dormer and front rooflights.

  Received 15 Jun, published by the council 24 Jul 2026 Lawful development
• 26/0724/CLED Granted

  70 The Mead Carpenders Park Watford Hertfordshire WD19 5BU

  Certificate of Lawfulness Existing Use: Use of annexe as a separate dwelling

  Received 5 May, published by the council 24 Jul 2026 Lawful development