314 Mutton Lane Potters Bar Hertfordshire EN6 2AX

1. 27 Aug 2026

   Received by Hertsmere

2. 4 Sep 2026

   Added to PlanIndex

3. Decision

   Awaiting decision

   Decision expected by 22 October 2026, 8 weeks from validation under the statutory target for most applications. Extensions of time are common and are agreed case by case.

   Hertsmere took a median of 65 days over the applications it decided in the last year.

This application is with Hertsmere for determination. The council publicises it, consults neighbours and technical bodies where required, and weighs the responses against local and national planning policy.

The statutory target is eight weeks for most applications and thirteen for major development, though extensions of time are common. Comments carry most weight while the case is undecided, so check the council portal for the deadline if you want to respond.

A lawful development certificate is a legal determination, not a planning judgement. It asks the council to confirm either that existing use or works are lawful, often through the passage of time, or that a proposal would not need planning permission at all. The applicant must prove the facts; the merits of the scheme are not considered.

More on lawful development applications in our guide

• 14 Allandale Crescent Potters Bar Hertfordshire EN6 2JY

  26/0253/HSE Submitted 26 Feb 2026 63m 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

• 10 Allandale Crescent Potters Bar Hertfordshire EN6 2JY

  26/0288/CLP Submitted 4 Mar 2026 76m away

  Conversion of loft to habitable space with hip-to-gable roof alterations to include rear dormer and insertion of 3x front roof lights. Certificate of Lawful Development (Proposed).

  Granted Lawful development Loft or dormer Roofing 8 docs

• 319 Mutton Lane Potters Bar Hertfordshire EN6 2AY

  21/0728/PD42 Submitted 6 Apr 2021 82m away

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

  Granted Prior approval Extension 6 docs
  Small domestic

• 358 Mutton Lane Potters Bar Hertfordshire EN6 2AX

  23/0012/HSE Submitted 4 Jan 2023 118m away

  Front porch roof canopy and single storey side and rear extensions. (AMENDED PLAN RECEIVED: 21/02/2023 - revised block plan and location plan)

  Granted Householder Extension 7 docs
  Small domestic

• 3 Allandale Crescent Potters Bar EN6 2JY

  TP/09/1437 Submitted 21 Aug 2009 151m 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 161m away

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

  Refused Lawful development 20 docs

• 26/1222/CLP Awaiting decision

  37 Duncan Way Bushey Hertfordshire WD23 2BE

  Conversion of loft to habitable space with associated hip to gable roof alterations, rear dormer, insertion of 3x front rooflights and removal of 2x chimney stacks, with side window at loft level. Certificate of Lawful Development (Proposed).

  24 Aug 2026 Lawful development
• 26/1220/CLP Awaiting decision

  The Farm House The Green Letchmore Heath Watford Hertfordshire WD25 8ES

  Removal of approximately 1.4m of private garden hedge and installation of an inward-opening pedestrian gate and posts, with a maximum overall height of 1.0 metre above existing ground level, wholly within the property boundary. Certificate of Lawful Development (Proposed).

  24 Aug 2026 Lawful development
• 26/1171/CLP Awaiting decision

  15 Catsey Woods Bushey Hertfordshire WD23 4HS

  Conversion of loft to habitable space with rear dormer and Juliet balcony, 1x window at loft level to each side, and insertion of 1x rear and 3x front rooflights. Certificate of Lawful Development (Proposed).

  14 Aug 2026 Lawful development
• 26/1156/CLP Awaiting decision

  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).

  12 Aug 2026 Lawful development
• 26/1154/CLP Awaiting decision

  44 Duncan Way Bushey Hertfordshire WD23 2BQ

  Conversion of loft to habitable space to include hip to gable roof alterations, 2x front rooflights, rear dormer and removal of chimney stack Certificate of Lawful Development (Proposed).

  11 Aug 2026 Lawful development