Planning application
11 Glenhaven Avenue Borehamwood Hertfordshire WD6 1AY
Works: Extension Loft or dormer Small domestic
Read from the description, not a valuation. How we read the register
Still open. Anyone can comment while the consultation period runs, and comments go to the council rather than to us.
Proposal
Single storey rear extension, conversion of loft to habitable space including rear dormer and 2x front roof lights. Certificate of lawful development (Proposed).
As published by the council, reference 26/1151/CLP
Application record
- Reference
- 26/1151/CLP
- Category
- Lawful development
- Status
- Awaiting decision
- Received
- 11 Aug 2026
- Validated
- 11 Aug 2026
- Ward
- Borehamwood Brookmeadow
- Parish
- Elstree & Borehamwood Town Council
- Postcode
- WD6 1AY
Site history
Applications at this address on the Hertsmere register
This site has had 3 applications since 2026.
-
26/1148/PD42 Awaiting decision
11 Glenhaven Avenue Borehamwood Hertfordshire WD6 1AY
Single storey rear extension. Depth: 4.42m, Height: 3.00m, Eaves: 3.00m.
-
26/1150/HSE Awaiting decision
11 Glenhaven Avenue Borehamwood Hertfordshire WD6 1AY
Single-storey side and rear extension.
Timeline
Dates from the published record
-
11 Aug 2026
Received by Hertsmere
-
18 Aug 2026
Added to PlanIndex
-
Decision
Awaiting decision
Decision expected by 6 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.
Who's behind it
Company information only, from the register and Companies House
Agent on file, an architecture practice
269 applications on PlanIndex · across 22 councils · 64% 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
4 documents on file for this application
- Applicationformredacted
- Proposed plans and elevations
- Existing plans and elevations
- Site images
Trade members open them from here.
Open the documentsWhat happens while it is decided
This application is with Hertsmere for determination, against a statutory target of eight weeks. Over the last year Hertsmere decided lawful development applications in a median of 55 days. More in our guide to how long planning decisions take.
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
-
11 Glenhaven Avenue Borehamwood Hertfordshire WD6 1AY
84% historically approved · decision due ~6 Oct
Single storey rear extension. Depth: 4.42m, Height: 3.00m, Eaves: 3.00m.
Awaiting decision Extension 3 docsSmall domestic -
11 Glenhaven Avenue Borehamwood Hertfordshire WD6 1AY
90% historically approved · decision due ~6 Oct
Single-storey side and rear extension.
Awaiting decision Householder Extension 7 docsSmall domestic -
Land To The Rear Of The Wellington Public House Theobald Street Borehamwood Hertfordshire WD6 4SE
Application for approval of details reserved by condition 10 (remedial works) of planning permission reference 17/1570/OUT.
Decided Conditions 5 docs -
13 Glenhaven Avenue Borehamwood Hertfordshire WD6 1AY
Construction of single storey side infill and rear extensions, and alterations to fenestration. Certificate of Lawful Development (Proposed).
Granted Lawful development Extension Windows or glazing 6 docsSmall domestic -
9 Glenhaven Avenue Borehamwood Hertfordshire WD6 1AY
Construction of single storey rear extension. Certificate of Lawful Development (Proposed).
Granted Lawful development Extension 13 docsSmall domestic -
Land Adjacent To The Wellington PH (now Known As 1-9 Robinson Court) Theobald Street Borehamwood Hertfordshire
Application for approval of details reserved by conditions 5 & 9 (Car park management plan) and 8 (Waste management plan) of planning permission reference 18/1006/FUL
Decided Conditions 6 docs
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).