10 Allandale Crescent Potters Bar Hertfordshire EN6 2JY

1. 4 Mar 2026

   Received by Hertsmere

2. 27 Apr 2026

   Decision issued: Grant Lawful Certificate (Proposed Dev)

3. 9 Aug 2026

   Added to PlanIndex

Hertsmere granted permission on 27 April 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.

• 14 Allandale Crescent Potters Bar Hertfordshire EN6 2JY

  26/0253/HSE Submitted 26 Feb 2026 50 yards away

  Construction of replacement front porch, addition of external wall insulation, and alterations to fenestration (Retrospective)

  Granted Householder Extension Windows or glazing 11 docs
  Small domestic

• 15 Allandale Crescent Potters Bar Hertfordshire EN6 2JY

  26/1457/CLP Submitted 9 Oct 2026 50 yards away

  81% historically approved · decision due ~4 Dec

  Conversion of loft to habitable space with rear and side dormer and 3x roof lights. Certificate of lawful development (Proposed).

  Awaiting decision Lawful development Loft or dormer

• 314 Mutton Lane Potters Bar Hertfordshire EN6 2AX

  26/1247/CLP Submitted 27 Aug 2026 100 yards away

  Conversion of loft to habitable space including hip to gable roof alterations, rear dormer and 2x front roof lights. Certificate of lawful development (Proposed).

  Decided Lawful development Loft or dormer Roofing 3 docs

• 3 Allandale Crescent Potters Bar EN6 2JY

  TP/09/1437 Submitted 21 Aug 2009 100 yards away

  *Electronic documents only, no paper fileSingle storey side extension, single storey rear extension. New skylight to flat roof at rear (amended description).

  Granted Full applications Extension 20 docs
  Small domestic

• 1 Allandale Crescent Potters Bar Hertfordshire EN6 2JY

  19/1677/CLP Submitted 18 Oct 2019 100 yards away

  Erection of detached outbuilding to rear of property. Certificate of Lawful Development (Proposed).

  Refused Lawful development 20 docs

• 319 Mutton Lane Potters Bar Hertfordshire EN6 2AY

  21/0728/PD42 Submitted 6 Apr 2021 100 yards away

  Single storey rear extension. Depth - 4m, Height - 4m, Eaves - 2.98m

  Granted Prior approval Extension 6 docs
  Small domestic

• 26/1156/CLP Decided

  30 Ladbrooke Drive Potters Bar Hertfordshire EN6 1QR

  Single storey rear extension. Conversion of loft to habitable space with hip-to-gable roof alterations to include rear dormer. Certificate of Lawful Development (Proposed).

  Received 12 Aug, published by the council 25 Aug 2026 Lawful development
• 26/1494/CLP Awaiting decision

  32 Billy Lows Lane Potters Bar Hertfordshire EN6 1XN

  Demolition of existing garage and temporary shed to facilitate construction of single storey side extension, conversion of loft to habitable space to include hip to gable roof alterations, rear dormer and 4x front rooflights Certificate of Lawful Development (Proposed).

  Received 16 Oct, published by the council 21 Oct 2026 Lawful development
• 26/1489/CLP Awaiting decision

  6 Minorca Close Bentley Heath Barnet Hertfordshire EN5 4FA

  Erection of detached outbuilding in the rear garden for uses ancillary to the main dwelling. Certificate of Lawful Development (Proposed).

  Received 15 Oct, published by the council 20 Oct 2026 Lawful development
• 26/1258/CLP Granted

  106 Whitehouse Avenue Borehamwood Hertfordshire WD6 1HE

  Construction of single storey rear extension. Certificate of Lawful Development (Proposed).

  Received 1 Sep, published by the council 8 Sep 2026 Lawful development
• 26/1247/CLP Decided

  314 Mutton Lane Potters Bar Hertfordshire EN6 2AX

  Conversion of loft to habitable space including hip to gable roof alterations, rear dormer and 2x front roof lights. Certificate of lawful development (Proposed).

  Received 27 Aug, published by the council 4 Sep 2026 Lawful development