England · Local authority

Hertsmere Borough Council
Planning applications.

Explore collected planning applications and decisions for Hertsmere Borough Council. Search an address, application reference or proposal to find a record.

Collected application statistics

Collected records · All available dates

5,952Searchable applications

440Recorded as pending

83%Approval rate · 4,008 approved or refused records

672Refused applications

3,336 approved · 672 refused · 307 withdrawn. Received dates in our records: 4 Sept 2020 to 7 Oct 2026. Most recent record check: 11 Oct 2026. Counts reflect the last collected status; some records may be out of date.

Local planning information

Council sources checked 14 Sept 2026

Planning information Planning and Building Control Contact planning Planning Permission Advice Local plan Draft Local Plan 2026: A new sustainable Local Plan for Hertsmere Pre-application advice Pre-Application Advice Article 4 directions Article 4 Directions - Conservation

Council contacts

Planning enquiries02082072277 Council source

Contact details were found on council pages. Check the source for opening hours and which enquiries the service handles.

Conservation areas and Article 4 directions

Explore published planning boundaries and follow their source records for designation details. Coverage varies: an empty map does not mean there are no restrictions. Check the council’s current maps and documents before relying on a boundary.

Conservation areas16 mapped area records

Article 4 direction areasNo boundary records available in this collection

Interactive planning map loads with JavaScript. Dataset sources are linked below.

Download Article 4 coverage for all authorities (CSV)

Data downloaded 14 Sept 2026. Display boundaries are simplified and indicative. Map record counts are not a complete count of designations or directions.

Sources: Planning Data conservation areas and Article 4 direction areas. Contains public sector information licensed under the Open Government Licence v3.0.

More application records

Decided23/0503/TPO
T13 HORSE CHESTNUT. Reduce 1 limb by 3m, with the final length of the limb being 3m. Reduce the eastern half of the crown by 1.5-2m. Remove 3 lower limbs to achieve a crown lift above neighbouring garden of no.18 Downalong. To reduce risk of limb failure, due to compromised major branch union at approximately 5m by maintaining the crown spread due to over extended branches that have not been managed in order to maintain the amenity value that the tree provides in accordance with BS3998.
16 Downalong Bushey Heath Bushey Hertfordshire WD23 1HZ
Received 4 Apr 2023
Decided23/0504/HSE
Rear dormer roof extension (conversion of roof space into habitable use); front and side roof lights and construction of a rear outbuilding (following demolition of the existing structure) with decking and alterations to the land levels around the outbuilding (incidental to the main dwelling house) (Revised Description to accurately reflect proposal).
35 The Crosspath Radlett Hertfordshire WD7 8HR
Received 3 Apr 2023
Decided23/0505/CLP
Conversion of loft to habitable space to include rear dormer with Juliet balcony, insertion of 3 x front roof lights and chimney stack removal. Certificate of Lawful Development (Proposed).
36 Blackhorse Lane South Mimms Potters Bar Hertfordshire EN6 3PS
Received 3 Apr 2023
Decided23/0506/PD42
Construction of a single storey rear extension. Depth: 4.74m, Height: 2.95m, Eaves: 2.60m.
36 Blackhorse Lane South Mimms Potters Bar Hertfordshire EN6 3PS
Received 3 Apr 2023
Decided23/0507/FUL
Removal and replacement of existing doors and windows including new openings; relocation of existing signage; installation of powered defibrillator; front and rear lighting; ramping/hardsurfacing alongside internal alterations to include changinglocker room; kitchen; chairmans store room and disabled unisex toilet.
Crusaders Clubhouse King George V Playing Fields Mutton Lane Potters Bar Hertfordshire EN6 3BN
Received 4 Apr 2023
Decided23/0508/TRC
T1 EUCALYPTUS. Fell.
14 The Grove Radlett Hertfordshire WD7 7NF
Received 5 Apr 2023
Decided23/0509/HSE
Single storey front and side extension and alterations to fenestration.
36 Blackhorse Lane South Mimms Potters Bar Hertfordshire EN6 3PS
Received 4 Apr 2023
Decided23/0510/HSE
Part single, part two storey side extension, single storey front extension and alterations to fenestration
4 Darrington Road Borehamwood Hertfordshire WD6 4LL
Received 4 Apr 2023
Decided23/0511/HSE
Single storey rear extension following demolition of conservatory.
32 Harris Lane Shenley Radlett Hertfordshire WD7 9EG
Received 5 Apr 2023
Decided23/0512/FUL
Change of use of the existing dwelling (C3) to commercial premise (Class E) (retrospective application, description of development updated 31.05.2023).
33C High Street Bushey Hertfordshire WD23 1BD
Received 5 Apr 2023
Decided23/0513/FUL
Removal of existing external signage and ATM and infill to match existing brickwork.
221 Watling Street Radlett Hertfordshire WD7 7AJ
Received 5 Apr 2023
Decided23/0514/FUL
Single storey rear extension to existing commercial unit.
301 Shenley Road Borehamwood Hertfordshire WD6 1TH
Received 5 Apr 2023
Decided23/0515/CLP
Single storey rear extension. Certificate of Lawful Development (Proposed).
2 Russet Drive Shenley Radlett Hertfordshire WD7 9RH
Received 6 Apr 2023
Decided23/0516/TRC
G1 6no. CONIFERS. Fell. T1 SYCAMORE. Fell. T2 PLUM. Fell. T3 CONIFER Fell.
18 Loom Lane Radlett Hertfordshire WD7 8AD
Received 11 Apr 2023
Decided23/0519/DOC
Application for approval of details reserved by Condition 3 (Arboricultural Method Statement) of planning permission reference 22/1697/HSE.
2 Lands End Elstree Borehamwood Hertfordshire WD6 3DL
Received 6 Apr 2023
Decided23/0520/HSE
Conversion of loft to form habitable space including hip to gable roof alterations, front and rear dormers and front roof lights. Revised application.
227 Darkes Lane Potters Bar Hertfordshire EN6 1BX
Received 6 Apr 2023
Decided23/0521/HSE
Conversion of loft to form habitable space including 3 side roof lights. (Accompanying Listed Building application 23/0522/LBC)
8 Allum Lane Elstree Borehamwood Hertfordshire WD6 3PL
Received 6 Apr 2023
Decided23/0522/LBC
Conversion of loft to form habitable space including 3 side roof lights. (Listed Building Consent) (Accompanying Householder application 23/0521/HSE)
8 Allum Lane Elstree Borehamwood Hertfordshire WD6 3PL
Received 6 Apr 2023
Decided23/0523/HSE
Veranda adjoining existing rear extension.
22 Laurel Avenue Potters Bar Hertfordshire EN6 2AB
Received 6 Apr 2023
Decided23/0525/HSE
Single storey rear extension (following part demolition of existing extension); front porch extension; front rooflight; removal of existing rear dormers to create a roof/first floor rear extension with dormers either side with Juliet Balcony and new and replacement side windows. Revised application.
101 The Walk Potters Bar Hertfordshire EN6 1QJ
Received 6 Apr 2023
Decided23/0526/CLP
Conversion of loft to form habitable room including rear dormer and 2 front roof lights. Certificate of Lawful Development (Proposed).
1 Cromwell Road Borehamwood Hertfordshire WD6 4LW
Received 11 Apr 2023
Decided23/0527/FUL
Retention of two marquees to provide reception area and extension to dog training area.
Southridge Animal Centre Packhorse Lane Ridge Potters Bar Hertfordshire EN6 3LZ
Received 6 Apr 2023
Decided23/0528/HSE
Single storey side extension and conversion of loft to form habitable space including a front facing dormer. Revised application.
1 Beehive Close Elstree Borehamwood Hertfordshire WD6 3HP
Received 11 Apr 2023
Decided23/0529/HSE
Single storey rear extension and alterations to fenestration.
23 Spring Close Borehamwood Hertfordshire WD6 5HD
Received 11 Apr 2023

Records are ordered by application ID, not submission date. Use search to find a particular address or proposal.

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Researching a proposal in Hertsmere Borough Council

Start with the address or application reference. Open a record to read the proposal, dates and available documents, then check the official register for the latest plans and consultation details. If nothing appears, check coverage before treating the result as a complete planning history.

How to search planning applications

Guides to planning records

All planning guides

Understanding planning · 13 min read
Planning application documents: what to read first
Understand planning application documents, officer reports and decision notices. Use a reading checklist, document table and worked example to inspect a case.
UK research
Published 16 Jul 2026Updated 13 Sept 2026
Understanding planning · 13 min read
Planning permission drawings: how to read plans
Read planning drawings, floor plans, elevations and sections. Use labelled diagrams, a drawing comparison table and revision checks to understand a proposal.
UK research
Published 6 Aug 2026Updated 13 Sept 2026
Property research · 13 min read
Planning approval rates: how to read council statistics
Understand planning approval rates with an interactive calculator, worked examples and comparison table. Check sample sizes, outcomes and coverage before comparing.
UK research
Published 13 Aug 2026Updated 13 Sept 2026

What these statistics cover

These figures describe applications collected by PlanningTrack for Hertsmere Borough Council, across all dates currently available. They are a partial dataset, rather than an authority-wide performance measure. The date range does not establish continuous historical coverage.

The approval percentage is approved records divided by approved plus refused records. Pending, withdrawn and unknown outcomes are excluded. No percentage is shown until there is an approved or refused record.

Check collection coverage