Planning application
10 Allandale Crescent Potters Bar Hertfordshire EN6 2JY
Works: Loft or dormer Roofing
Permission granted. Work must normally begin within three years of the decision or the permission lapses.
Proposal
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).
As published by the council, reference 26/0288/CLP
Application record
- Reference
- 26/0288/CLP
- Type
- Certificate Proposed Lawful Use/Dev
- Status
- Decided
- Decision
- Grant Lawful Certificate (Proposed Dev)
- Received
- 4 Mar 2026
- Validated
- 4 Mar 2026
- Decided
- 27 Apr 2026
- Ward
- Bentley Heath & The Royds
- Parish
- No Parish
- Decision by
- Delegated Decision
- Postcode
- EN6 2JY
Timeline
Dates from the published record
-
4 Mar 2026
Received by Hertsmere
-
27 Apr 2026
Decision issued: Grant Lawful Certificate (Proposed Dev)
-
9 Aug 2026
Added to PlanIndex
Who's behind it
Company information only, from the register and Companies House
Agent on file, an architecture practice
17 applications on PlanIndex · across 3 councils · 82% granted
Trade members see who it is, their full track record, and every application they have filed.
See who's behind itDocuments
Plans, drawings, consultee responses and the officer's report
8 documents on file for this application
A planning file usually holds the application form, drawings and site plans, consultee responses, the officer's report and the decision notice.
Trade members open them from here.
Open the documentsWhat a grant of permission means
The process from here
Permission has been granted, usually subject to conditions listed on the decision notice, some of which must be discharged before work starts. The decision notice on the council portal sets out exactly what was approved.
Work must normally begin within three years of the decision or the permission lapses. Neighbours cannot appeal a grant; challenging one means judicial review of how the decision was made, within tight time limits.
About lawful development applications
How this application type works
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.
Nearby applications
Within 500 metres
-
14 Allandale Crescent Potters Bar Hertfordshire EN6 2JY
Construction of replacement front porch, addition of external wall insulation, and alterations to fenestration (Retrospective)
Granted Householder Extension Windows or glazing 11 docsSmall domestic -
314 Mutton Lane Potters Bar Hertfordshire EN6 2AX
78% historically approved · decision due ~22 Oct
Conversion of loft to habitable space including hip to gable roof alterations, rear dormer and 2x front roof lights. Certificate of lawful development (Proposed).
Awaiting decision Lawful development Loft or dormer Roofing -
3 Allandale Crescent Potters Bar EN6 2JY
*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 docsSmall domestic -
1 Allandale Crescent Potters Bar Hertfordshire EN6 2JY
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
Single storey rear extension. Depth - 4m, Height - 4m, Eaves - 2.98m
Granted Prior approval Extension 6 docsSmall domestic -
37 Allandale Crescent Potters Bar Hertfordshire EN6 2JZ
Conversion of loft to habitable room with rear dormer, 3 roof lights to front and change in roof shape from hipped to gable. Certificate of lawfulness (Proposed).
Granted Lawful development Loft or dormer 5 docs
Other lawful development applications
In Hertsmere
-
26/1247/CLP Awaiting decision
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).
-
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).
-
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).
-
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).
-
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).