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

6,145Searchable applications

440Recorded as pending

83%Approval rate · 4,148 approved or refused records

700Refused applications

3,448 approved · 700 refused · 322 withdrawn.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 Counts reflect the last collected status; some records may be out of date.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

Decided23/1145/VOC
Application for removal of condition 6 (Permitted Development rights under Class a, b, and c) and 7 (Permitted Development rights under Class e) following grant of planning permission 17/2307/FUL.
Moles End Grange Lane Letchmore Heath Watford Hertfordshire WD25 8DY
Received 9 Aug 2023
Decided23/1146/CLP
Construction of a single storey detached outbuilding to accommodate summerhouse and garden equipment storage. Certificate of Lawful Development (Proposed).
Otterspool House Otterspool Lane Aldenham Watford Hertfordshire WD25 8AX
Received 9 Aug 2023
Decided23/1147/CLP
Conversion of loft to habitable space with hip to gable alterations to include rear dormer with Juliet balcony and insertion of 2 x front roof lights. Certificate of Lawful Development (Proposed).
9 Drayton Avenue Potters Bar Hertfordshire EN6 2LF
Received 9 Aug 2023
Decided23/1148/HSE
Demolition of existing utility and store room, construction of a single storey rear extension and alterations to fenestration to include insertion of 2 x roof lights. Erection of a single storey detached garage to rear garden.
71 The Crosspath Radlett Hertfordshire WD7 8HP
Received 9 Aug 2023
Decided23/1149/TPO
T26 HORSE CHESTNUT. Crown reduce 1m to leave a final height of 10m and spread of 6m.
Clare Hall Laboratories Blanche Lane South Mimms Potters Bar Hertfordshire EN6 3LD
Received 10 Aug 2023
Decided23/1150/PD42
Single storey rear extension. Depth: 4.5m, Height: 3m, Eaves: 3m.
9 Drayton Avenue Potters Bar Hertfordshire EN6 2LF
Received 9 Aug 2023
Decided23/1151/PD42
Single storey rear extension. Depth: 6m, Height: 3m, Eaves: 3m.
9 Drayton Avenue Potters Bar Hertfordshire EN6 2LF
Received 9 Aug 2023
Decided23/1152/FUL
Erection of an electrical substation with 6 x high-powered DC (rapid) electric vehicle charging hubs and associated electrical equipment (Associated LBC under reference 23/1153/LBC).
The Three Compasses Pegmire Lane Aldenham Watford Hertfordshire WD25 8DR
Received 9 Aug 2023
Decided23/1153/LBC
Erection of an electrical substation with 6 x high-powered DC (rapid) electric vehicle charging hubs and associated electrical equipment (Associated FUL under reference 23/1152/FUL).
The Three Compasses Pegmire Lane Aldenham Watford Hertfordshire WD25 8DR
Received 9 Aug 2023
Decided23/1154/HSE
Three storey front/side extension (following demolition of side garage).
9 Three Valleys Way Bushey Hertfordshire WD23 2FF
Received 9 Aug 2023
Decided23/1155/TRC
T1 ASH. Fell. T2 OAK. Fell.
St James Church High Street Bushey Hertfordshire
Received 11 Aug 2023
Unknown23/1156/MA
Application for a non-material amendment to allow for rebuilding of the upper level of the west courtyard wall following the grant of planning permission ref 23/0592/FUL.
The Mansion Wrotham Park Barnet Hertfordshire EN5 4SB
Received 10 Aug 2023
Decided23/1157/TPO
T2 FIELD MAPLE and T3 OAK. Fell.
9 Allum Lane Elstree Borehamwood Hertfordshire WD6 3LU
Received 11 Aug 2023
Unknown23/1159/HRN
8m hedgerow on the boundary of NG Elstree Substation/Hilfield Lane to be removed for essential works and replanted. See document V2 -13430.02C.
Hilfield Farm Hilfield Lane Aldenham Watford Hertfordshire WD25 8DD
Received 11 Aug 2023
Decided23/1160/OUT
Demolition of 2x semi-detached dwellings and erection of two storey block of flats containing 9 dwellings (1 x 3 bedroom, 2 x 1 bedroom and 6 x 2 bedroom) including accommodation at loft level with car & cycle parking facilities and associated landscaping. (Outline Planning Application with all matters reserved)
37 - 38 Ayot Path Borehamwood Hertfordshire
Received 10 Aug 2023
Decided23/1161/FUL
Change of use from warehousing (B8) to light industrial/Laboratory (class E).
10 - 11 Station Close Potters Bar Hertfordshire EN6 1TL
Received 11 Aug 2023
Decided23/1162/DOC
Application for approval of details reserved by condition 5 (biodiversity enhancement measures) of planning permission reference 21/2035/VOC.
46 Newberries Avenue Radlett Hertfordshire WD7 7EP
Received 11 Aug 2023
Decided23/1163/CLP
Conversion of loft to habitable space to include rear dormer and insertion of 2 x front roof lights. Removal of chimney stack and insertion of 2 x new windows to side elevation. Certificate of Lawful Development (Proposed).
20 Koh-i-noor Avenue Bushey Hertfordshire WD23 3EJ
Received 14 Aug 2023
Decided23/1164/HSE
Conversion of loft to habitable room with associated hip to gable roof alterations, to include rear dormer, insertion of 2 x front roof lights and 1 x side window at loft level. Part single, part two storey rear extension, with pitched roof and 1 x roof light to single storey.
54 Borough Way Potters Bar Hertfordshire EN6 3HB
Received 14 Aug 2023
Decided23/1165/HSE
Retrospective application for approval of works to the front canopy, roof, brick work and fenestration of existing garage.
43 The Shrublands Potters Bar Hertfordshire EN6 2BN
Received 14 Aug 2023
Decided23/1166/LBC
Conversion of existing chapel to dance studio (Application for Listed Building consent).
Chapel St Margarets School Merry Hill Road Bushey Hertfordshire
Received 14 Aug 2023
Decided23/1167/HSE
Enlargement of existing rear dormer to create additional accommodation within the loft space to include hip to gable roof alterations and insertion of front roof light. (AMENDED PLANS RECEIVED 29/09/2023).
22 Willow Way Radlett Hertfordshire WD7 8DX
Received 14 Aug 2023
Decided23/1168/CLP
Single Storey Rear Extension to provide downstairs WC for disabled occupant. Certificate of Lawful Development (Proposed).
14 Clive Close Potters Bar Hertfordshire EN6 2AE
Received 14 Aug 2023
Decided23/1169/HSE
Installation of air source heat pump to rear of the property.
35 Pinewood Drive Potters Bar Hertfordshire EN6 2BD
Received 15 Aug 2023

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

View all applications

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