Planning application
70 Hillside Avenue Borehamwood Hertfordshire WD6 1HL
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 to include hip to gable roof alterations, rear dormer, 1x front rooflight and removal of chimney stack Certificate of Lawful Development (Proposed).
As published by the council, reference 26/0334/CLP
Application record
- Reference
- 26/0334/CLP
- Type
- Certificate Proposed Lawful Use/Dev
- Status
- Decided
- Decision
- Grant Lawful Certificate (Proposed Dev)
- Received
- 12 Mar 2026
- Validated
- 12 Mar 2026
- Decided
- 14 May 2026
- Ward
- Borehamwood Hillside
- Parish
- Elstree & Borehamwood Town Council
- Decision by
- Delegated Decision
- Postcode
- WD6 1HL
Site history
Applications at this address on the Hertsmere register
This site has had 2 applications since 2026: 2 approved, 0 refused.
-
26/0333/PD42 Granted
70 Hillside Avenue Borehamwood Hertfordshire WD6 1HL
Single storey rear extension. Depth: 6.00m, Height: 3.75m, Eaves: 2.75 m.
Timeline
Dates from the published record
-
12 Mar 2026
Received by Hertsmere
-
14 May 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 registered in London
6 applications on PlanIndex · across 2 councils
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
12 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 this grant of permission means
Hertsmere granted permission on 14 May 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.
About lawful development applications
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.
Nearby applications
Within 500 metres
-
70 Hillside Avenue Borehamwood Hertfordshire WD6 1HL
Single storey rear extension. Depth: 6.00m, Height: 3.75m, Eaves: 2.75 m.
Granted Prior approval Extension 9 docsSmall domestic -
72 Hillside Avenue Borehamwood Hertfordshire WD6 1HL
Conversion of loft to habitable room with rear dormer, change in roof shape from hipped to gable and 3 rooflights to front. Certificate of lawfulness (Proposed).
Granted Lawful development Loft or dormer 7 docs -
77 Hillside Avenue Borehamwood Hertfordshire WD6 1HQ
Conversion of loft to form habitable space including hip to gable roof alterations, rear dormer and 2 roof lights to front. Certificate of Lawful Development (Proposed).
Granted Lawful development Loft or dormer Roofing 9 docs -
59 Hillside Avenue Borehamwood Hertfordshire WD6 1HQ
Conversion of loft to habitable room with hip to gable roof alterations, rear dormer, new side window, and 3 front rooflights. Certificate of Lawful Development (proposed).
Granted Lawful development Loft or dormer Roofing +1 10 docs -
59 Hillside Avenue Borehamwood Hertfordshire WD6 1HQ
Construction of single storey front, side and rear extensions, following demolition of existing conservatory.
Granted Householder Extension Demolition 11 docsSmall domestic -
59 Hillside Avenue Borehamwood Hertfordshire WD6 1HQ
Single storey front, side and rear extension following demolition of rear conservatory.
Granted Householder Extension Demolition 5 docsSmall domestic
Other lawful development applications
In Hertsmere
-
26/1258/CLP Awaiting decision
106 Whitehouse Avenue Borehamwood Hertfordshire WD6 1HE
Construction of single storey rear extension Certificate of Lawful Development (Proposed).
-
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).