4 Watling Knoll Radlett Hertfordshire WD7 7HW Data via plota.co.uk
26/0501/HSE - Householder Application
Approved
Proposal
Conversion of garage to habitable space and single storey side extension with pitched roof over both, and insertion of 6x rooflights; alterations to fenestration. Data via plota.co.uk
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View original council record ↗
Application progress
✓
Received
13 Apr 2026
✓
Validated
23 Apr 2026
✓
Approved
29 Jun 2026
✓
Consultation
30 Jun 2026
Approved on 29 Jun 2026 · Delegated Decision · Last checked 5 Jul 2026
Documents 7
Decision & officer reports 2
Statements & assessments 1
Plans & drawings 2
Application forms 1
Consultation & comments 1
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Important details
- Council
- Hertsmere
- Application type
- Householder Application
- Postcode
- WD7 7HW
- Received
- 13 Apr 2026
- Validated
- 23 Apr 2026
- Ward
- Aldenham West
- Parish
- Aldenham Parish
- Case officer
- Track to view
- Target decision
- 29 Jun 2026
- Decision
- Grant Permission
- Decision date
- 29 Jun 2026
- Decision level
- Delegated Decision
- Applicant
- Track to view
- Agent
- KG Plan & Design Ltd
Consultation & key dates
- Alt. reference
- PP-14847012
- Consultation
- 30 Jun 2026
- Comments by
- 18 May 2026
- Env. assessment
- No
Historical activity at this location
31 previous applications on record - archival context, not part of the live application.
This property
Previous applications at this address
2018
Refused
Conversion of loft to habitable room with hip to gable roof alteration, construction of r…
2018
Approved
Hip to gable loft conversion with 2 No. front roof lights (Certificate of Lawful Developm…
2017
Refused
Conversion of loft to habitable room to include hip to gable roof alterations and dormers…
2017
Approved
Conversion of loft to habitable room to include side and rear dormers and two front roofl…
2016
Approved
Conversion of garage to habitable room and ground floor infill rear extension.
2016
Approved
Conversion of garage to habitable room and ground floor infill rear extension.
Within ~100m
Nearby activity
2025
13 Watling Knoll Radlett Hertfordshire WD7 7HW
Demolition of existing conservatory to facilitate construction of part single, part two s…
2025
13 Watling Knoll Radlett Hertfordshire WD7 7HW
Demolition of existing conservatory to facilitate construction of part single, part two s…
2024
Approved
5 Watling Knoll Radlett Hertfordshire WD7 7HW
Construction of part single, part two storey rear extension with associated roof alterati…
2024
Approved
7 Watling Knoll Radlett Hertfordshire WD7 7HW
T8, T9, T10. 3no. BIRCH. Fell. T11 CHERRY. Deadwood all east facing branches (exempt). Re…
2023
Approved
18 The Close Radlett Hertfordshire WD7 8HA
Conversion of loft to habitable space with hip to gable roof alterations to include rear…
2023
Approved
18 The Close Radlett Hertfordshire WD7 8HA
Conversion of loft to habitable space with hip to gable roof alterations to include rear…
2023
Approved
18 The Close Radlett Hertfordshire WD7 8HA
Conversion of loft to habitable space including hip to gable roof alterations, rear dorme…
2023
Approved
18 The Close Radlett Hertfordshire WD7 8HA
Conversion of loft to habitable space including hip to gable roof alterations, rear dorme…
2022
Approved
5 Watling Knoll Radlett Hertfordshire WD7 7HW
Ground floor rear extension following demolition of detached garage.
2022
Approved
5 Watling Knoll Radlett Hertfordshire WD7 7HW
Ground floor rear extension following demolition of detached garage.
2022
Approved
8 Watling Knoll Radlett Hertfordshire WD7 7HW
Demolition of existing shed, construction of part single, part two storey rear extension…
2022
Approved
8 Watling Knoll Radlett Hertfordshire WD7 7HW
Demolition of existing shed, construction of part single, part two storey rear extension…
2021
Approved
8 Watling Knoll Radlett Hertfordshire WD7 7HW
Demolition of shed and erection of part single, part two storey rear extension, single st…
2021
Approved
8 Watling Knoll Radlett Hertfordshire WD7 7HW
Demolition of shed and erection of part single, part two storey rear extension, single st…
2021
Approved
9 Watling Knoll Radlett Hertfordshire WD7 7HW
Part single, part two storey side and rear extension and porch extension to front.
2021
Approved
9 Watling Knoll Radlett Hertfordshire WD7 7HW
Part single, part two storey side and rear extension and porch extension to front.
2021
Approved
5 Watling Knoll Radlett Hertfordshire WD7 7HW
Removal of existing porch canopy over front door and installation of new timber framed pi…
2021
Approved
5 Watling Knoll Radlett Hertfordshire WD7 7HW
Removal of existing porch canopy over front door and installation of new timber framed pi…
2021
Approved
18 The Close Radlett Hertfordshire WD7 8HA
Conversion of loft to habitable room, with change in roof shape from hipped to gable, dor…
2021
Approved
18 The Close Radlett Hertfordshire WD7 8HA
Conversion of loft to habitable room, with change in roof shape from hipped to gable, dor…
2016
Approved
18 The Close Radlett Hertfordshire WD7 8HA
Single storey front extension and porch (retrospective); Erection of front porch canopy…
2016
Approved
18 The Close Radlett Hertfordshire WD7 8HA
Single storey front extension and porch (retrospective); Erection of front porch canopy…
2017
Approved
19 The Close Radlett Hertfordshire WD7 8HA
Erection of part single, part two storey side extension and single storey rear extension…
2016
Refused
14 Watling Knoll Radlett Hertfordshire WD7 7HW
Single storey front extension with relocated entrance, 2 storey side extension following…
2016
Refused
14 Watling Knoll Radlett Hertfordshire WD7 7HW
Single storey front extension with relocated entrance, 2 storey side extension following…
Hertsmere
Planning Authority Score
3.2/10
Poor
#230 of 292 councils
Relevant to this application:
Householder decisions
Hertsmere is slower than most councils at deciding householder applications, ranking #240 out of 292. The council extends the time limit on 55% of applications - one of the highest rates in England. Expect your application to take longer than the standard deadline. Householder applications are slightly more likely to be approved here (94%) than the national average (90%).
Frequently extends decision deadlines
expect longer than the statutory limit
These figures are council-wide context, not a prediction for this application.
View full council performance
Hertsmere decision performance
Based on MHCLG data, 2025
93%
Overall approval rate
Above avg (87%) #61 of 292
94%
Householder approved
Above avg (90%) #107 of 292
49%
Decided in 8 weeks
Below avg (64%) #240 of 292
55%
Extended time limit
Above avg (40%) #251 of 292
84%
Minor dwellings approved
102 decided (1-9 homes)
75%
Major dwellings approved
8 decided (10+ homes)
88%
Change of use approved
25 decided
749
Total decisions
56 refused in 2025
Track this application
4 Watling Knoll Radlett Hertfordshire WD7 7HW