111 Cassiobury Park Avenue Watford WD18 7LH Data via plota.co.uk
26/00346/FULH - Full householder
Approved
Proposal
Erection of single storey rear extension with roof light Data via plota.co.uk
Track application
Save this application and get an email when its status or decision changes.
Alerts nearby
Get email alerts for new planning applications near this address.
View original council record ↗
Application progress
✓
Received
5 May 2026
✓
Approved
26 Jun 2026
Approved on 26 Jun 2026 · Delegated Decision · Last checked 5 Jul 2026
Documents 10
Decision & officer reports 2
Plans & drawings 6
PDF
SITE LOCATION
Drawing Approved · 5 May 2026
View ↗
PDF
EXISTING AND PROPOSED BLOCK
Drawing Approved · 5 May 2026
View ↗
PDF
EXISTING FLOOR AND ROOF
Drawing Approved · 5 May 2026
View ↗
PDF
EXISTING ELEVATIONS
Drawing Approved · 5 May 2026
View ↗
PDF
PROPOSED FLOOR AND ROOF
Drawing Approved · 5 May 2026
View ↗
PDF
PROPOSED ELEVATIONS
Drawing Approved · 5 May 2026
View ↗
Other new applications on this street
Nearby new applications
23 Shepherds Road Watford WD18 7HU
Erection of a ground and first floor extensions, loft conversion with dormer and...
2 Gade Avenue Watford Hertfordshire WD18 7LG
Erection of a double and single storey front and side extensions.
16 Garden Close Watford Hertfordshire WD17 3DP
Proposed two storey side extension with new two storey gables entrance atrium an...
14 Swiss Avenue Watford WD18 7LN
Erection of single storey part rear and part side extension
71 Cassiobury Drive Watford WD17 3AG
Extensions at first floor and roof level to create additional bedroom with en su...
14 Swiss Avenue Watford WD18 7LN
Lawful Development Certificate for proposed loft conversion including rear dorme...
Important details
- Council
- Watford
- Application type
- Full householder
- Postcode
- WD18 7LH
- Received
- 5 May 2026
- Validated
- 5 May 2026
- Ward
- Park
- Case officer
- Track to view
- Decision
- Conditional Planning Permission
- Decision date
- 26 Jun 2026
- Decision level
- Delegated Decision
- Applicant
- Track to view
- Agent
- Amber Architecture Limited
Consultation & key dates
- Alt. reference
- PP-14904014
- Env. assessment
- No
Historical activity at this location
29 previous applications on record - archival context, not part of the live application.
This property
Previous applications at this address
2020
Approved
Demolition of existing conservatory and existing garage building and construction of a si…
2020
Approved
Demolition of existing conservatory and existing garage building and construction of a si…
2020
Approved
Lawful Development Certificate for a loft conversion with rear dormer, hip-to-gable, velu…
2020
Approved
Lawful Development Certificate for a loft conversion with rear dormer, hip-to-gable, velu…
Within ~100m
Nearby activity
2023
Approved
94 Cassiobury Park Avenue Watford WD18 7LF
The erection of a single storey rear extension which would extend beyond the rear wall of…
2023
Approved
94 Cassiobury Park Avenue Watford WD18 7LF
The erection of a single storey rear extension which would extend beyond the rear wall of…
2022
Approved
10 Swiss Avenue Watford Hertfordshire WD18 7LN
Erection of single storey rear extension and raising existing garage roof
2022
Approved
10 Swiss Avenue Watford Hertfordshire WD18 7LN
Erection of single storey rear extension and raising existing garage roof
2022
Approved
88 Cassiobury Park Avenue Watford WD18 7LF
Proposed reduction in the depth of the existing extension in order to comply with the est…
2022
Approved
88 Cassiobury Park Avenue Watford WD18 7LF
Proposed reduction in the depth of the existing extension in order to comply with the est…
2021
Refused
2 Swiss Avenue Watford WD18 7LN
Erection of double storey side and rear extension to provide annexe accommodation (previo…
2021
Refused
2 Swiss Avenue Watford WD18 7LN
Erection of double storey side and rear extension to provide annexe accommodation (previo…
2021
2 Swiss Avenue Watford WD18 7LN
Erection of double storey side and rear extension to provide annexe accommodation (previo…
2021
2 Swiss Avenue Watford WD18 7LN
Erection of double storey side and rear extension to provide annexe accommodation (previo…
2021
85 Cassiobury Park Avenue Watford WD18 7LH
Proposed ground floor side extension, floor plan redesign and all associated works
2021
85 Cassiobury Park Avenue Watford WD18 7LH
Proposed ground floor side extension, floor plan redesign and all associated works
2021
95 Cassiobury Park Avenue Watford WD18 7LH
Erection of single storey side and rear extension
2021
95 Cassiobury Park Avenue Watford WD18 7LH
Erection of single storey side and rear extension
2020
Refused
2 Swiss Avenue Watford WD18 7LN
Erection of a two storey side and rear extension to provide annexe accommodation.
2020
Refused
2 Swiss Avenue Watford WD18 7LN
Erection of a two storey side and rear extension to provide annexe accommodation.
2019
Approved
10 Swiss Avenue Watford WD18 7LN
Demolition of existing conservatory and erection of a single storey rear extension with f…
2019
Approved
125 Cassiobury Park Avenue Watford WD18 7LH
Retrospective application for the change of use of the outbuilding to gym, childrens' ent…
2018
Approved
119 Cassiobury Park Avenue Watford WD18 7LH
Erection of a single storey rear and side extension.
2018
Approved
2 Swiss Close Watford WD18 7LW
Erection of part two storey part single storey side extension and single storey rear exte…
2016
Refused
2 Swiss Close Watford WD18 7LW
The erection of a single storey rear extension which would extend beyond the rear wall of…
2016
Approved
125 Cassiobury Park Avenue Watford WD18 7LH
The erection of a single storey rear extension which would extend beyond the rear wall of…
2016
Approved
125 Cassiobury Park Avenue Watford WD18 7LH
The erection of a single storey rear extension which would extend beyond the rear wall of…
2016
Approved
125 Cassiobury Park Avenue Watford WD18 7LH
Erection of a first floor rear extension, single storey side to rear extension and detach…
2016
Approved
125 Cassiobury Park Avenue Watford WD18 7LH
Erection of a first floor rear extension, single storey side to rear extension and detach…
Watford
Planning Authority Score
5.9/10
Average
#104 of 292 councils
Relevant to this application:
Householder decisions
Watford is faster than most councils at deciding householder applications, ranking #76 out of 292. Only 19% of applications have the time limit extended, well below the 40% national average - the council usually decides on time. Watford is also one of the strictest councils - it refuses more householder applications than almost any other, with only 82% approved vs 90% nationally.
One of the strictest councils
only 82% approved vs 90% nationally
These figures are council-wide context, not a prediction for this application.
View full council performance
Watford decision performance
Based on MHCLG data, 2025
79%
Overall approval rate
Below avg (87%) #268 of 292
82%
Householder approved
Below avg (90%) #264 of 292
76%
Decided in 8 weeks
Above avg (64%) #76 of 292
19%
Extended time limit
Below avg (40%) #18 of 292
59%
Minor dwellings approved
44 decided (1-9 homes)
100%
Major dwellings approved
3 decided (10+ homes)
56%
Change of use approved
9 decided
522
Total decisions
109 refused in 2025
Track this application
111 Cassiobury Park Avenue Watford WD18 7LH