40 Carrington Avenue Borehamwood Hertfordshire WD6 2HA Data via plota.co.uk
Proposal
Conversion of loft to habitable space to include rear dormer, 3x front rooflights and removal of chimney stack Certificate of Lawful Development (Proposed). Data via plota.co.uk
Application progress
Approved on 23 Jul 2026 · Delegated Decision · Last checked 26 Jul 2026
Documents 3
Decision & officer reports 1
Plans & drawings 1
Application forms 1
Site constraints 4
Checked on 6 October 2026. Historic England, the Environment Agency, Natural England and council datasets, Open Government Licence. A boundary can run through a site and the council holds the definitive record: confirm with the council before relying on this.
Building
From the energy performance certificate lodged in June 2025, the latest held for this property. The building may have changed since. View the certificate
Every application in Hertsmere - and every UK council - as a live feed, an API, or a bulk CSV export.
Other new applications on this street
Nearby new applications
24 Burghley Avenue Borehamwood Hertfordshire WD6 2JF
Retention of existing outbuilding. (Retrospective application.)
Land Off Barnet Lane And Furzehill Road Borehamwood Hertfordshire
Application for a non-material amendment to allow amendments to condition 14 fol...
52 Carrington Avenue Borehamwood Hertfordshire WD6 2HA
Replacement rear dormer and alterations to front roof lights. Certificate of law...
5 Wordsworth Gardens Borehamwood Hertfordshire WD6 2AB
T8, T9 and T10 all three mature Poplars (canascens). All three trees reduced by ...
The Borehamwood Elstree Childrens Centre Shakespeare Drive Borehamwood Hertfordshire WD6 2FD
Erection of 2x banners.
The Borehamwood Elstree Childrens Centre Shakespeare Drive Borehamwood Hertfordshire WD6 2FD
Two banners, 1m x 2m in size, advertising the cafe at the Borehamwood and Elstre...
Important details
- Council
- Hertsmere
- Application type
- Certificate Proposed Lawful Use/Dev
- Postcode
- WD6 2HA
- Received
- 19 May 2026
- Validated
- 19 May 2026
- Ward
- Borehamwood Hillside
- Parish
- Elstree & Borehamwood Town Council
- Case officer
- Show
- Target decision
- 27 Jul 2026
- Decision
- Grant Lawful Certificate (Proposed Dev)
- Decision date
- 23 Jul 2026
- Decision level
- Delegated Decision
- Applicant
- Show
- Agent
- KDB Building Designs Ltd
How this decision compares
Decided in 65 days from validation, 10 days slower than Hertsmere's median of 55 for extensions. Approved, as 86% of extensions here are.
Plota live figures for extensions decided by Hertsmere in the last twelve months, from validation. Hertsmere decision record →
Consultation & key dates
- Alt. reference
- PP-14947128
- Planning Portal ref
- PP-14947128
- Statutory expiry
- 27 Jul 2026
- Env. assessment
- No
Historical activity at this location
25 nearby applications on record - archival context, not part of the live application.
Nearby activity
Hertsmere is slower than most councils at deciding householder applications, ranking #243 out of 296. 55% of applications have the time limit extended, above the 41% national average. Householder applications are slightly more likely to be approved here (94%) than the national average (90%).
Freehold boundary: © Crown copyright and database rights 2026, HM Land Registry. Polygons © Crown copyright and database rights 2026 Ordnance Survey 100026316. Conditions of use
Energy performance: Energy performance certificates from the Energy Performance of Buildings Register, Ministry of Housing, Communities and Local Government. Contains public sector information licensed under the Open Government Licence v3.0. © Crown copyright 2026.
Track this application
40 Carrington Avenue Borehamwood Hertfordshire WD6 2HA
Tracking this application
Not there in a minute? Check junk - especially Hotmail and Outlook.
Go to your dashboard →Sign in to view contact details
Applicant and case-officer names are hidden from public view for privacy. Create a free Plota account - or sign back in - and we'll show them, plus you get a dashboard for alerts and tracked applications.