157 Cassiobury Drive Watford WD17 3AL Data via plota.co.uk
Proposal
Proposed roof alteration involving double hip-to-gable conversion; erection of a rear crown-roof dormer; erection of a front dormer; installation of 4 x roof lights on the front and front/side roof slope; installation of new windows to the front, rear and side; installation of a side door to the ground floor; changes to finish materials; internal alterations. Data via plota.co.uk
Application progress
Approved on 8 Sept 2026 · Delegated Decision · Last checked 10 Sept 2026
Documents 17
Decision & officer reports 1
Statements & assessments 1
Plans & drawings 12
Application forms 2
Other documents 1
Site constraints 2
Checked on 11 September 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.
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Important details
How this decision compares
Decided in 49 days from validation, about the council's usual 49 days. Approved, as 75% of extensions here are.
Plota live figures for extensions decided by Watford in the last twelve months, from validation. Watford decision record →
Public comments
No public comments yet.
3 neighbours consulted · Last counted 10 Sept 2026
Consultation & key dates
- Alt. reference
- PP-15096145
- Comments by
- 12 Aug 2026
- Env. assessment
- No
Historical activity at this location
27 previous applications on record - archival context, not part of the live application.
Previous applications at this address
Nearby activity
Watford is faster than most councils at deciding householder applications, ranking #41 out of 296. Only 21% of applications have the time limit extended, well below the 41% 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 81% approved vs 90% nationally.
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157 Cassiobury Drive Watford WD17 3AL
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