Planning application
26/0681/CLP
40 Carrington Avenue Borehamwood Hertfordshire WD6 2HA
Proposal
Conversion of loft to habitable space to include rear dormer, 3x front rooflights and removal of chimney stack Certificate of Lawful Development (Proposed).
As published by the council, reference 26/0681/CLP
Timeline
Dates from the published record
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19 May 2026
Received by Hertsmere
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23 Jul 2026
Decision issued: Grant Lawful Certificate (Proposed Dev)
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24 Jul 2026
Added to PlanIndex
What 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
-
26/0735/HSE Awaiting decision
40 Carrington Avenue Borehamwood Hertfordshire WD6 2HA
Demolition of garage to form single storey side and part single part two storey rear extensions, erection of porch and internal alterations.
-
21/1142/TPO Granted
52 Carrington Avenue Borehamwood Hertfordshire WD6 2HA
T1 OAK. Fell.
-
25/1554/REM Awaiting decision
Land Off Barnet Lane And Furzehill Road Borehamwood Hertfordshire
Application for the approval of reserved matters relating to details of appearance, landscaping, layout and scale pursuant to outline planning permission 23/0937/OUT (granted under APP/N1920/W/24/3346928) for the erection of 220 dwellings and associated open space, hard and soft landscaping, car parking and other infrastructure.
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23/0169/DOC Decided
1 Carrington Close Borehamwood Hertfordshire WD6 2HB
Application for approval of details reserved by conditions 3 (hard and soft landscape scheme) and 6 (location of the air conditioning units) of planning permission reference 22/1819/HSE.
-
26/0700/HSE Granted
56 Masefield Avenue Borehamwood Hertfordshire WD6 2HQ
Construction of first floor rear extension above existing single storey rear extension.
-
26/0688/HSE Granted
36 Masefield Avenue Borehamwood Hertfordshire WD6 2HQ
Single storey rear extension and alterations to fenestration.
Other lawful development applications
In Hertsmere
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26/0872/CLP Granted
118 Theobald Street Borehamwood Hertfordshire WD6 4PA
Conversion of loft to habitable space with associated hip to gable roof alterations, to include rear dormer, insertion of 3x front rooflights and removal of chimney stack. Certificate of Lawful Development (Proposed).
-
26/1014/CLP Awaiting decision
24 Mount Grace Road Potters Bar Hertfordshire EN6 1RD
Construction of a single-storey outbuilding within the rear garden. Certificate of Lawful Development (Proposed).
-
26/1015/CLP Awaiting decision
24 Mount Grace Road Potters Bar Hertfordshire EN6 1RD
Construction of a single-storey BBQ within the garden. Certificate of Lawful Development (Proposed).
-
26/1011/CLE Awaiting decision
6 Brickfield Cottages Theobald Street Borehamwood Hertfordshire WD6 4SD
Construction of a single-storey detached outbuilding within the rear garden of the existing dwellinghouse for use as a private gym incidental to the enjoyment of the main dwelling (Use Class C3). Certificate of Lawful Development (Existing).
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26/0791/CLP Granted
56 Rushfield Potters Bar Hertfordshire EN6 3HJ
Conversion of loft to habitable space with rear dormer and Juliet balcony, and insertion of 3x front rooflights. Certificate of Lawful Development (Proposed).